1+I effect is shown by (A) 2 N0 (B) Cl (C) Br (D) 3 CH 0.023 g of sodium metal is reacted with 100 cm3 of water. The pH of the resulting solution is ______. (A) 11 (B) 10 (C) 12 (D) 9 0.5 mole of each of H2, SO2 and CH4 are kept in a container. A hole was made in the container. After 3 hours, the order of partial pressures in the container will be (A) pH2 > pSO2 > pCH4 (B) pH2 > pCH4 > pSO2 (C) pSO2 > pH2 > pCH4 (D) pSO2 > pCH4, > pH2 10 cm3 of 0.1 N monobasic acid requires 15 cm3 of sodium hydroxide solution whose normality is (A) 1.5 N (B) 0.15 N (C) 0.066 N (D) 0.66 N 10 6 M NaOH is diluted 100 times. The pH of the diluted base is (A) between 6 and 7 (B) between 10 and 11 (C) between 7 and 8 (D) between 5 and 6 2 gm of a radioactive sample having half life of 15 days was synthesised on 1st Jan 2009. The amount of the sample left behind on 1st March. 2009 (including both the days) (A) 1 gm (B) 0.5 gm (C) 0 gm (D) 0.125 gm 2HI(g) H2(g) + I2(g) The equilibrium constant of the above reaction is 6.4 at 300 K. If 0.25 mole each of H2 and I2 are added to the system, the equilibrium constant will be (A) 3.2 (B) 1.6 (C) 6.4 (D) 0.8

Answer: (D)

Answer: (C)

Answer: (D)

Answer: (C)

Answer: (C)

Answer: (D)

Answer: (C)

Answer: (B) 2SO2(g) + O2(g) (A) irreversible reaction (B) heterogenous catalysis (C) homogenous catalysis (D) neutralisation reaction is an example for

Answer: (D) 30 cc of HCl, 20 cc of 5 HNO3 and 40 cc of NaOH solutions are mixed and the volume was made up to 1 dm3. The pH of the resulting solution is

1(A) (B) (C) (D) 1 3 8 2 Answer: (B)

5 moles of SO2 and 5 moles of O2 are allowed to react. At equilibrium, it was found that 60% of SO2 is used up. lf the partial pressure of the equilibrium mixture is one atmosphere. the partial pressure of O2 is (A) 0.21 atm (B) 0.41 atm (C) 0.82 atm (D) 0.52 atm Which one of these is NOT TRUE for benzene? (A) It forms only one type of monosubstituted product (B) There are three carbon-carbon single bonds and three carbon-carbon double bonds (C) Heat of hydrogenation of benzene is less than the theoretical value (D) The bond angle between carbon-carbon bonds is 120 Which one of the following is paramagnetic? (A) N2 (B) NO (C) CO (D) O3 Which one of the following is a covalent crystal? (A) Ice (B) Rock salt (C) Dry ice (D) Quartz Which one of the following DOES NOT involve coagulation? (A) Formation of delta region (B) Clotting of blood by the use of ferric chloride (C) Peptization (D) Treatment of drinking water by potash alum Which one is not a constituent of nucleic acid? (A) Uracil (B) Guanidine (C) Phosphoric acid (D) Ribose sugar 50 cm3 of 0.2 N HCI is titrated against 0.1 N NaOH solution. The titration is discontinued after adding 50 cm3 of NaOH. The remaining titration is completed by adding 0.5 N KOH. The volume of KOH required for completing the titration is ______. (A) 10 cm3 (B) 12 cm3 (C) 10.5 cm3 (D) 25 cm3 80 g of oxygen contains as many atoms as in (A) 80 g of hydrogen (B) 1 g of hydrogen (C) 10 g of hydrogen (D) 5 g of hydrogen 9.65 C of electric current is passed through fused anhydrous magnesium chloride. The magnesium metal thus obtained is completely converted into a Grignard reagent. The number of moles of the Grignard reagent obtained is ______.

Answer: (B)

Answer: (B)

Answer: (D)

Answer: (C)

Answer: (B)

Answer: (A)

Answer: (D)

Answer: (D)

1(A) 1 10-4 (B) 5 10-4 (C) 1 10-5 (D) 5 10-5 A 6% solution of urea is isotonic with (A) 6% solution of Glucose (B) 25% solution of Glucose (C) 1 M solution of Glucose (D) 0.05 M solution of Glucose A bivalent metal has an equivalent mass of 32. The molecular mass of the metal nitrate is (A) I92 (B) 188 (C) 182 (D) 168 A body of mass 10 mg is moving with a velocity of 100 ms-1. The wavelength of deBroglie wave associated with it would be (Note : h = 6.63 10-34Js) (A) 6.63 10-37m (B) 6.63 10-31m (C) 6.63 10-34m (D) 6.63 10-35m A body of mass x kg is moving with a velocity of 100 ms-1. Its de Broglie wavelength is 6.62 10-35m. Hence x is (h = 6.62 10-34Js) (A) 0.15 kg (B) 0.2 kg (C) 0.1 kg (D) 0.25 kg A buffer solution contains 0.1 mole of sodium acetate dissolved in 1000 cm3 of 0.1 M acetic acid. To the above buffer solution, 0.1 mole of sodium acetate is further added and dissolved. The pH of the resulting buffer is equal to ______. (A) pKa (B) pKa - Log2 (C) pKa + L0g2 (D) pKa + 2 A buffer solution is prepared in which the concentration of NH3 is 0.30 M and the concentration of is 0.20 M. If the equilibrium constant, Kb for NH3 equals 1.8 105, what is the pH of this solution? (A) 8.73 (B) 9.08 (C) 9.43 (D) 11.72 A complex compound in which the oxidation number of a metal is zero is (A) K4 [Fe (CN)6] (B) K3 [Fe (CN)6] (C) [Ni (CO)4] (D) [Pl (NH3 )4]Cl2 Which of the following is used to prepare Cl2 gas at room temperature from concentrated HCI? (A) MnO2 (B) H2S (C) KMnO4 Answer: (C) Answer: (C)

Answer: (B)

Answer: (B)

Answer: (C)

Answer: (C)

Answer: (C)

Answer: (C)

1(D) Cr2O3 Which of the following is not an ore of magnesium? (A) Carnallite (B) Dolomite (C) Calamine (D) Sea water Which of the following has the highest bond order? (A) N2 (B) O2 (C) He2 (D) H2 Which of the following gives an aldehyde on dry distillation? (A) Calcium acetate + calcium benzoate (B) Calcium formate + calcium acetate (C) Calcium benzoate (D) Calcium acetate Which of the following does not give benzoic acid on hydrolysis? (A) phenyl cyanide (B) benzoyl chloride (C) benzyl chloride (D) methyl benzoate A compound is formed by elements A and B. This crystallises in the cubic structure where the A atoms are at the comers of the cube and B atoms are at the body centres. The simplest formula of the compound is (A) AB (B) A6B (C) A8B4 (D) AB6 A compound of 'A' and 'B' crystallises in a cubic lattice in which the 'A' atoms occupy the lattice points at the comers of the cube. The 'B' atoms occupy the centre of each face of the cube. The probable empirical formula of the compound is (A) AB (B) AB3 (C) AB2 (D) A3B A covalent molecule AB3 has pyramidal structure. The number of lone pair and bond pair electrons in the molecule are respectively (A) 3 and 1 (B) 1 and 3 (C) 2 and 2 (D) 0 and 4 A diabetic person carries a pocket of Glucose with him always, because (A) Glucose reduces the blood sugar level. (B) Glucose increases the blood sugar level almost instantaneously. (C) Glucose reduces the blood sugar level slowly. (D) Glucose increases the blood sugar level slowly. A dibromo derivative of an alkane reacts with sodium metal to form an alicyclic hydrocarbon. The derivative is ______. (A) 2, 2 - dibromobutane (B) 1, 1 - dibromopropane (C) 1, 4 - dibromobutane (D) 1, 2 - dibromoethane A gas deviates from ideal behaviour at a high pressure because its molecules (A) attract one another Answer: (C)

Answer: (A)

Answer: (B)

Answer: (C)

Answer: (A)

Answer: (B)

Answer: (B)

Answer: (B)

Answer: (C)

Answer: (A)

1(B) show the Tyndall effect (C) have kinetic energy (D) are bound by covalent bonds A gaseous mixture was prepared by taking equal mole of CO and N2. If the total pressure of the mixture was found 1 atmosphere, the partial pressure of the nitrogen (N2) in the mixture is (A) 1 atm (B) 0.5 atm (C) 0.8 atm (D) 0.9 atm A ligand can also be regarded as (A) Lewis acid (B) Bronsted base (C) Lewis base (D) Bronsted acid A metal present in insulin is (A) copper (B) iron (C) zinc (D) aluminium A mixture of CaCl2 and NaCl weighing 4.44 g is treated with sodium carbonate solution to precipitate all the Ca+2 ions as calcium carbonate. The calcium carbonate so obtained is heated strongly to get 0.56 g of CaO. The percentage of NaCl in the mixture (atomic mass of Ca = 40) is ______. (A) 30.6 (B) 75 (C) 69.4 (D) 25 Which of the following compound would not evolve CO2 when treated with NaHCO3 solution? (A) salicylic acid (B) phenol (C) benzoic acid (D) 4-nitro benzoic acid Which is not the correct statement about RNA and DNA? (A) DNA is active in virus where RNA never appears in virus (B) DNA exists as dimer while RNA is usually single stranded (C) DNA contains deoxyribose as its sugar and RNA contains ribose (D) RNA contains uracil in place of thymine (found in DNA) as a base Which cycloalkane has the lowest heat of combustion per CH2 group? (A) cyclopropane (B) cyclobutanc (C) cyclopontane (D) cyclohexane When a mixture of calcium benzoate and calcium acetate is dry distilled, the resulting compound is (A) acetophenone (B) benzaldehyde (C) benzophenone (D) acetaldehyde What is the nature of glucose-glucose linkage in starch that makes its so susceptible to acid hydrolysis? (A) Starch is hemiacetal (B) Starch is acetal (C) Starch is polymer (D) Starch contains only few molecules of glucose

Answer: (B)

Answer: (C)

Answer: (C)

Answer: (B)

Answer: (B)

Answer: (A)

Answer: (D)

Answer: (A)

Answer: (B)

1

1

1

1

1

1

1

1

A white crystalline salt A reacts with dilute HCI to liberate a suffocating gas B Answer: (A) 1 and also forms a yellow precipitate. The gas B turns potassium dichromate acidified with dilute H2SO4 to a green coloured solution C. A, B and C are respectively ______. (A) Na2S2O3, SO2, Cr2 (SO4)3 (B) Na2SO3, SO2, Cr2 (SO4)3 (C) Na2SO4, SO2, Cr2 (SO4)3 (D) Na2S, SO, Cr2 (SO4)3 According to Bayer's strain theory which is highly stable? Answer: (C) (A) cyclohexane (B) cycloheptane (C) cyclopentane (D) cyclobutane Acidified K2Cr2O7 solution turns green when Na2SO3 is added to it. This is due Answer: (B) to the formation of (A) CrSO4 (B) Cr2(SO4)3 (C) (D) Cr2(SO3)3 Acidified sodium fusion extract on addition of ferric chloride solution gives blood red colouration which confirms the presence of (A) S (B) N (C) N and S (D) S and Cl Amines behave as (A) Lewis acids (B) Lewis base (C) aprotic acid (D) neutral compound Among the following, the compound that contains ionic, covalent and coordinate linkage is (A) NaCl (B) CaO (C) NH3 (D) NH4Cl Among the following, which is least acidic? (A) phenol (B) O-cresol (C) p-nitrophenol (D) p-chlorophenol An alkyl halide reacts with alcoholic ammonia in a sealed tube, the product formed will be (A) a primary amine (B) a secondary amine(C) a tertiary amine (D) a mixture of all the three An aqueous solution containing 6.5 gm of NaCl of 90% purity was subjected to electrolysis. After the complete electrolysis, the solution was evaporated to get solid NaOH. The volume of 1 M acetic acid required to neutralise NaOH obtained above is (A) 100 cm3 (B) 200 cm3 (C) 1000 cm3 (D) 2000 cm3 An element with atomic number 21 is a (A) halogen (B) representative element (C) transition element (D) alkali metal The sp3d2 hybridization of central atom of a molecule would lead to (A) square planar geometry (B) Tetrahedral geometry (C) Trigonal bipyramidal geometry

Answer: (C)

Answer: (B)

Answer: (D)

Answer: (B)

Answer: (D)

Answer: (A)

Answer: (C)

Answer: (D)

1Answer: (B) An ionic compound is expected to have tetrahedral structure if lies in the range of (A) 0.414 to 0.732 (B) 0.225 to 0.414 (C) 0.155 to 0.225 (D) 0.732 to 1 An octahedral complex is formed when hybrid orbitals of the following type are involved Answer: (C) (A) sp3 (B) d sp2 (C) d2sp3 (D) sp2d2 An organic compound on heating with CuO produces CO2 but no water. The organic Answer: (C) compound may be (A) Methane (B) Ethyl iodide (C) Carbon tetrachloride (D) Chloroform An organic compound X is oxidised by using acidified K2Cr2O7. The product obtained reacts Answer: (A) with Phenyl hydrazine but does not answer silver mirror test. The possible structure of X is (A) (CH3)2CHOH (B) CH3CHO (C) CH3CH2OH

(D) CH3 CH3 An oxygen containing organic compound upon oxidation forms a carboxylic acid as the only organic product with its molecular mass higher by 14 units. The organic compound is ______. (A) a primary alcohol (B) an aldehyde (C) a ketone (D) a secondary alcohol Anisole can be prepared by the action of methyl iodide on sodium phenate. The reaction is called (A) Wurtz's reaction (B) Williamson's reaction (C) Fittig's reaction (D) Etard's reaction Argon is used (A) in high temperature welding (B) in radiotherapy for treatment of cancer (C) in filling airships (D) to obtain low temperature Arrange the following in the increasing order of their basic strengths : CH3NH2, (CH3)2NH, (CH3)3N, NH3 (A) (CH3)3N < NH3 < CH3NH2 < (CH3)2 NH (B) CH3NH2 < (CH3)2NH < (CH3)3N < NH3 (C) NH3 < (CH3)3N < (CH3)2NH < CH3NH2 (D) NH3 < (CH3)3N < CH3NH2 < (CH3)2NH Arrange the following in the increasing order of their bond order: O2, O , O and O

Answer: (A)

Answer: (B)

Answer: (A)

Answer: (D)

Answer: (C)

(A) O ,O2, O ,O (B) O2, O , O , O (C) O , O , O2 O

1

(D) O , O , O , O2 Based on the first law of thermodynamics, which one of the following is correct? Answer: (A) For an adiabatic process: U = w (B) For an isochoric process: U = q (C) For a cyclic process: q = w (D) For an isothermal process: q = +w The yellow precipitate formed during the chromyl chloride test is chemically Answer: (A) lead chromate (B) chromic acid (C) sodium chromate (D) lead acetate The typical range of molar enthalpies for the strongest intermolecular (Hydrogen) bonds Answer: is (A) 200 300 kJ (B) 300 500 kJ (C) 4 25 kJ (D) 4 25 J The time required for 100% completion of a zero order reaction is Answer: (A) a/2k (B) ak (C) 2k/a (D) a/k The standard emf of a galvanic cell involving 2 moles of electrons in its rodox reaction is Answer: 0.59 V. The equilibrium constant for the redox reaction of the cell is (A) 105 (B) 1020 (C) 1010 (D) 10 Answer: The spin only magnetic moment of Fe2+ ion (in BM) is approximately (A) 7 (B) 4 (C) 6 (D) 5 Benzaldehyde and acetone can be best distinguished using ______. Answer: (C) (A) sodium hydroxide solution (B) Fehling's solution (C) Tollens' reagent (D) 2, 4-DNPH Benzene reacts with chlorine in sunlight to give a final product Answer: (C) (A) C6H5Cl (B) C6Cl6 (C) C6H6Cl6 (D) CCl4 By what factors does the average velocity of a gaseous molecule increase when the Answer: (A) temperature (in Kelvin) is doubled? (A) 1.4 (B) 2.0 (C) 2.8 (D) 4.0 Carbon can reduce ferric oxide to iron at a temperature above 983 K because ______. Answer: (A) (A) carbon has a higher affinity towards oxidation than iron. (B) carbon monoxide formed is thermodynamically less stable than ferric oxide. (C) iron has a higher affinity towards oxygen than carbon. (D) free energy change for the formation of carbon dioxide is less negative than that for ferric oxide. Carbon forms two oxides which have different compositions. The equivalent mass of Answer: (B) which remains constant?

(C)

(A)

(C)

(D)

(B)

(D)

1(A) carbon (B) oxygen (C) neither carbon nor oxygen (D) both carbon and oxygen Catalytic dehydrogenation of a primary alcohol gives a (A) secondary alcohol (B) aldehyde (C) ketone (D) ester CH3CH2Br (A) CH3CONH2 (B) CH3Br (C) CHBr3 (D) CH3NH2 A B C C D; "D" is _____.

Answer: (B)

Answer: (D)

Answer: (D) CH3COOH ln the above reaction Z is (A) Ketol (B) Acetal (C) Butanol (D) Aldol Chloroacetic acid is a stronger acid than acetic acid. This can be explained using ______. (A) I effect (B) M effect (C) +I effect (D) + M effect Clemmensen reduction of a ketone is carried out in the presence of which of the following? (A) H2 and Pt as catalyst (B) Glycol with KOH (C) Zn-Hg with HCl (D) LiAlH4 0.023 g of sodium metal is reacted with 100 cm3 of water. The pH of the resulting solution is ______. (A) 8 (B) 10 (C) 12 (D) 9 2 gm of metal carbonate is neutralized completely by 100 ml of 0.1 (N) HCI. The equivalent weight of metal carbonate is (A) 50 (B) 100 (C) 150 (D) 200 25 g of each of the following gasses are taken at 27oC and 600 mm pressure. Which of these will have the least volume? (A) HCl (B) HBr (C) HI (D) HF 4 moles each of SO2 and O2 gases are allowed to react to form SO3 in a closed vessel. At equilibrium 25% of O2 is used up. The total number of moles of all the gases present at equilibrium is (A) 6.5 (B) 7.0

Answer: (A)

Answer: (C)

Answer: (C)

Answer: (D)

Answer: (C)

Answer: (B)

1(C) 8.0 (D) 2.0 A distinctive and characteristic functional group of fats is (A) a peptide group (B) an ester group (C) an alcoholic group (D) a ketonic group Consider the following gaseous equilibria with equilibrium constants K1 and K2 respectively. SO2(g) + SO3(g) 2SO3(g) 2SO2(g) + O2(g) The equilibrium constants are related as ______. (A) 2K1 = (B) (C) (D) Considering the reaction C(S) +O2(g) CO2(g)+393.5 kJ the signs of H , S and G respectively are (A) +, , (B) , , (C) +, + , (D) +, , Considering the state of hybridization of carbon atoms, find out the molecule among the following which is linear? (A) CH3 CH2 CH2 CH3 (B) CH3 CH = CH CH3 (C) CH3 C C CH3 (D) CH2 = CH CH2 C CH Cooking is fast in a pressure cooker, because (A) food is cooked at constant volume. (B) loss of heat due to radiation is minimum. (C) food particles are effectively smashed. (D) water boils at higher temperature inside the pressure cooker. Dalda is prepared from oils by (A) oxidation (B) reduction (C) hydrolysis (D) distillation Dalton's law of partial pressures is applicable to which one of the following systems? (A) CO + H2 (B) H2 + Cl2 (C) NO + O2 (D) NH3 + HCl Decomposition of benzene diozonium chloride by using Cu2Cl2/HCl to form chlorobenzene is (A) Cannizarro's reaction (B) Kolbe's reaction (C) Sandmeyer's reaction (D) Raschig's reaction

Answer: (B)

Answer: (B)

Answer: (A)

Answer: (C)

Answer: (D)

Answer: (B)

Answer: (A)

Answer: (C)

1Denatured alcohol is (A) Rectified spirit (B) Undistilled ethanol (C) Rectified spirit + methanol + naphtha (D) Ethanol + methanol During the adsorption of krypton on activated charcoal at low temperature, ______. (A) H < 0 and S < 0 (B) H > 0 and S < 0 (C) H < 0 and S > 0 (D) H > 0 and S > 0 During the extraction of gold the following reactions take place Au +CN + H2O [X] [X] + Zn [Y] + Au X and Y are respectively (A) [Au(CN)2] and [ZN(CN)4]2 (B) [Au(CN)4]3 and [ZN(CN)4]2 (C) [Au(CN)4]2 and [ZN(CN)4]2 (D) [Au(CN)2] and [ZN(CN)6]4 A transition metal ion exists in its highest oxidation state. It is expected to behave as (A) a chelating agent (B) a central metal in a coordination compound (C) an oxidising agent (D) a reducing agent Acrolcin test is positive for (A) polysaccharides (B) proteins (C) oils and fats (D) reducing sugars Among the alkali metals cesium is the most reactive because (A) its incomplete shell is nearest to the nucleus (B) it has a single electron in the valence shell (C) it is the heaviest alkali metal (D) the outermost electron is more loosely bound than the outermost electron of the other alkali metals An electric current is passed through an aqueous solution of a mixture of alanine (isoelectric point 6.0) glutamic acid (3.2) and arginine (10.7) buffered at pH 6. What is the fate of the three acids? (A) Glutamic acid migrates to anode at pH 6. Arginine is present as a cation and migrates to the cathode. Alanine in a dipolar ion remains uniformly distributed in solution. (B) Glutamic acid migrates to cathode and others remain uniformly distributed in solution. (C) All three remain uniformly distributed in solution. (D) All three move to cathode An organic compound which produces a bluish green coloured flame on heating in presence of copper is (A) chlorobenzene (B) benzaldehyde (C) aniline (D) benzoic acid During the formation of a chemical bond (A) energy decreases (B) energy increases (C) energy of the system does not change (D) electron-electron repulsion becomes more than the nucleus-electron attraction E1, E2 and E3 are the emf values of the three galvanic cells respectively. a) Zn | || |Cu

Answer: (C)

Answer: (A)

Answer: (A)

Answer: (C)

Answer: (C)

Answer: (D)

Answer: (A)

Answer: (A)

Answer: (A)

Answer: (A)

1

b) Zn |

||

|Cu

c) Zn | || |Cu Which one of the following is true? (A) E3 > E2 > E1 (B) E2 > E3> E1 (C) E1 > E3> E2 (D) E1 > E2> E3 Ellingham diagram represents a graph of (A) G Vs T (B) G0 Vs T (C) S Vs P (D) G Vs P Enthalpy change for the reaction, 4H(g) 2H2(g) is 869.6 kJ. The dissociation energy of H H bond is (A) +217.4 kJ (B) 434.8 kJ (C) 869.6 kJ (D) +434.8 kJ Enthalpy of vapourization of benzene is +35.3 kJ mol 1 at its boiling point of 80C. The entropy change in the transition of the vapour to liquid at its boiling point [in JK 1 mol 1] is ______. (A) 100 (B) 441 (C) +100 (D) +441 Entropy of the universe is (A) continuously increasing (B) continuously decreasing (C) zero (D) constant Excess of carbon dioxide is passed through 50 ml of 0.5 M calcium hydroxide solution. After the completion of the reaction, the solution was evaporated to dryness. The solid calcium carbonate was completely neutralised with 0.1 N Hydrochloric acid. The volume of Hydrochloric acid required is (At. mass of calcium = 40) (A) 500 cm3 (B) 400 cm3 (C) 300 cm3 (D) 200 cm3 Excess of PCl5 reacts with conc. H2SO4 giving (A) chlorosulphonic acid (B) thionyl chloride (C) sulphuryl chloride (D) sulphurous acid For a chemical reaction A B, the rate of the reaction is 2 10 3 mol dm 3 s 1, when 3 the initial concentration is 0.05 mol dm . The rate of the same reaction is 1.6 10 2 3 1 3 mol dm s when the initial concentration is 0.1 mol dm . The order of the reaction is (A) 3 (B) 1 (C) 2 (D) 0 For a stable molecule the value of bond order must be (A) negative (B) positive (C) zero (D) there is no relationship between stability and bond order.

Answer: (B)

Answer: (D)

Answer: (A)

Answer: (A)

Answer: (A)

Answer: (C)

Answer: (A)

Answer: (B)

1For alkali metals, which one of the following trends is INCORRECT? (A) Ionization energy: Li > Na > K > Rb (B) Hydration energy: Li > Na > K > Rb (C) Atomic size: Li < Na < K < Rb (D) Density: Li < Na < K < Rb For one mole of an ideal gas, increasing the temperature from 10C to 20C ______. (A) increases the rms velocity by times. (B) increases the average kinetic energy by two times. (C) increases both the average kinetic energy and rms velocity, but not significantly. (D) increases the rms velocity by two times. For the decomposition of a compound AB at 600 K, the following data were obtained: [AB] mol dm 3 Rate of decomposition of AB in mol dm 3 s 1 0.20 2.75 10 8 0.40 11.0 10 8 0.60 24.75 10 8 The order for the decomposition of AB is (A) 1 (B) 2 (C) 1.5 (D) 0 For the four successive transition elements (Cr, Mn, Fe and Co), the stability of + 2 oxidation state will be there in which of the following order? (A) Cr > Mn > Co > Fe (B) Mn > Fe > Cr > Co (C) Fe > Mn > Co > Cr (D) Co > Mn > Fe > Cr (At. nos. Cr = 24, Mn = 25, Fe = 26, Co = 27) For the reaction 2HI(g) H2(g) + I2(g) Q KJ , the equilibrium constant depends upon (A) temperature (B) pressure (C) catalyst (D) volume For the reaction Fe2O3 + 3CO 2Fe + 3CO2 the volume of carbon monoxide required to reduce one mole of ferric oxide is (A) 22.4 dm3 (B) 44.8 dm3 (C) 67.2 dm3 (D) 11.2 dm3 For the reaction H20 (l) H2O(g) at 373 K and one atmospheric pressure (A) H = TS (B) H = E (C) H = 0 (D) E = 0 For the reaction N2O+(g) + 2(g) 2NO(g), the equilibrium constant is K1. The equilibrium constant is K2 for the reaction 2NO(g) + O2(g) 2NO2(g). What is K for the reaction NO2(g) (A) (B) (C) N2(g) + O2(g)? Answer: (D)

Answer: (C)

Answer: (B)

Answer: (B)

Answer: (A)

Answer: (C)

Answer: (A)

Answer: (D)

1

(D) For the reversible reaction A(s) +B(g) C(g) + D(g): G0 = 350kJ. Which one of the following statements is true? (A) Equilibrium constant is greater than one. (B) The entropy change is negative. (C) The reaction is thermodynamically not feasible. (D) The reaction should be instantaneous. Formation of coloured solution is possible when metal ion in the compound contains (A) paired electrons (B) unpaired electrons (C) lone pair of electrons (D) none of these Generally, the first ionization energy increases along a period. But there are some exceptions. One which is NOT an exception is ______. (A) Na and Mg (B) N and O (C) Be and B (D) Mg and Al Which one of these is NOT true for benzene? (A) There are three carbon carbon single bonds and three carbon-carbon double bonds. (B) It forms only one type of monosubstituted product. (C) The bond angle between the carbon-carbon bonds is 1200. (D) The heat of hydrogenation of benzene is less than the theoretical value. Gram molecular volume of oxygen at STP is (A) 11200 cm3 (B) 22400 cm3 (C) 5600 cm3 (D) 3200 cm3 Graphite is a soft solid lubricant extremely difficult to melt. The reason for this anomalous behaviour is that graphite (A) has molecules of variable molecular masses like polymers. (B) has carbon atoms arranged in large plates of rings of strongly bound carbon atoms with weak interplate bonds. (C) is a non-crystalline substance. (D) is an allotropic form of carbon. Helium is used in balloons in place of hydrogen because it is (A) incombustible (B) lighter than hydrogen (C) radioactive (D) more abundant than hydrogen Hofmann's bromamide reaction is to convert (A) amine to amide (B) amide to amine (C) alcohol to acid (D) acid to alcohol How many chiral carbon atoms are present in 2, 3, 4 - trichloropentane? (A) 3 (B) 2 (C) 1 (D) 4 How many optically active stereomers are possible for butan-2, 3-diol? (A) 1 (B) 2 (C) 3

Answer: (A)

Answer: (B)

Answer: (A)

Answer: (A)

Answer: (B)

Answer: (B)

Answer: (A)

Answer: (B)

Answer: (B)

Answer: (B)

1(D) 4 Hydrogen gas is not liberated when the following metal is added to dil. HCl (A) Ag (B) Zn (C) Mg (D) Sn Hydroxyl ion concentration of 1M HCl is (A) 1 1014mol dm 3 -1 (B) 1 10 mol dm 3 (C) 1 10-13mol dm 3 1 3 (D) 1 10 mol dm Identify the ore not containing iron (A) chalcopyrites (B) carnallite (C) siderite (D) limonite Identify the reaction that does not take place in a blast furnace. (A) CaCO3 CaO + CO2 (B) CaO + Si O2 Ca Si O2 Ca Si O3 (C) 2Fe2O3 + 3C 4Fe + 3CO2 (D) CO2 + C 2CO If n = 6, the correct sequence of filling of electrons will be (A) ns np(n 1)d (n 2)f (B) ns n(n 2)f (n 1)d np (C) ns (n 1)d (n 2)f np (D) ns (n 2)f np (n 1)d If one mole of ammonia and one mole of hydrogen chloride are mixed in a closed container to form ammonium chloride gas, then (A) H > u (B) H = u (C) H < u (D) there is no relationship

Answer: (A)

Answer: (A)

Answer: (B)

Answer: (C)

Answer: (B)

Answer: (C)

Answer: (A) If the for a given reaction has a negative value, then which of the following gives the correct relationships for the values of G and Keq? (A) Go > 0; Keq < 1 (B) Go > 0; Keq > 1 (C) Go < 0; Keq > 1 (D) Go < 0; Keq < 1 Answer: (A) If the enthalpy change for the transition of liquid water to steam is 30 kJ mol1 at 27C, the entropy change for the process would be (A) 100 J mol1 K1 (B) 10 J mol1 K1 (C) 1.0 J mol1 K1 (D) 0.1 J mol1 K1 If x is amount of adsorbate and m is amount of adsorbent, which of the following Answer: (A) relations is not related to adsorption process? (A) (B) (C) =P T =f(p) at constant T = f(T) at constant p

(D) p = f(T) at constant In acetylene molecule, between the carbon atoms there are

Answer: (C)

1(A) three sigma bonds (B) two sigma and one pi bonds (C) one sigma and two pi bonds (D) three pi bonds In alkaline medium, alanine exists predominantly as/in ______. (A) zwitterion (B) anion (C) covalent form (D) cation In chromite ore, the oxidation number of iron and chromium are respectively ______. (A) +3, +6 (B) +3, +2 (C) +2, +3 (D) +2, +6 In Dumas' method of estimation of nitrogen 0.35 g of an organic compound gave 55 mL of nitrogen collected at 300 K temperature and 715 mm pressure. The percentage composition of nitrogen in the compound would be (Aqueous tension at 300 K = 15 mm) (A) 14.45 (B) 15.45 (C) 16.45 (D) 17.45 In Kjeldahl's method, ammonia from 5 g of food neutralizes 30 cm3 of 0.1 N acid. The percentage of nitrogen in the food is ______. (A) 8.4 (B) 0.84 (C) 1.68 (D) 16.8 In order to increase the volume of a gas by 10%, the pressure of the gas should be (A) increased by 10 % (B) increased by 1 % (C) decreased by 10 % (D) decreased by 1 % In the brown ring test, the brown colour of the ring is due to (A) ferrous nitrate (B) ferric nitrate (C) a mixture of NO and NO2 (D) nitrosoferrous sulphate In the electrolytic refining of Zinc, ______. (A) the impure metal is at the cathode. (B) graphite is at the anode. (C) acidified zinc sulphate.is the electrolyte. (D) the metal ion gets reduced at the anode. In the ionic equation Bi + 6H+ + Xe- Bi3+ + 3H2O, the values of X is (A) 3 (B) 4 (C) 2 (D) 6 In the periodic table metals usually used as catalysts belong to (A) s - block (B) p - block (C) d - block (D) f - block In which of the following process, a maximum increase in entropy is observed? (A) dissolution of salt in water (B) condensation of water (C) sublimation of naphthalene

Answer: (B)

Answer: (C)

Answer: (C)

Answer: (B)

Answer: (C)

Answer: (D)

Answer: (C)

Answer: (C)

Answer: (C)

Answer: (C)

1(D) melting of ice In which of the following, NH3 is not used? (A) Group reagent for the analysis of IV group basic radical. (B) Group reagent for the analysis of IIIgroup basic radical. (C) T0llen's reagent (D) Nessler's reagent In which one of the following, does the given amount of chlorine exert the least pressure in a vessel of capacity 1 dm3 at 273K? (A) 0.071 g (B) 0.0355 g (C) 0.02 mole (D) 6.023 x 1021 molecules

Answer: (D)

Answer: (B)

Which one of the following statements is true'? (A) Drying of oil involves hydrolysis (B) Saponification of oil yields a diol. (C) Refining of oil involves hydrogenation (D) Addition of antioxidant to oil minimizes rancidity IUPAC name of (CH3)3CCl (A) 2 chloro 2 methyl propane (B) t-butyl chloride (C) n-butyl chloride (D) 3-chloro butane Which one of the following statements is not true regarding (+) Lactose? (A) (+) Lactose, C12H22O11 contains 8-OH groups (B) On hydrolysis (+) Lactose gives equal amount of D(+) glucose and D(+) galactose (C) (+) Lactose is a -glycoside formed by the union of a molecule of D(+) glucose and a molecule of D(+) galactose (D) (+) Lactose is reducing sugar and does not exhibit mutarotation ln electrophillic aromatic substitution reaction, the nitro group is meta directing because it (A) increases electron density at meta position (B) increases electron density at ortho and para positions (C) decreases electron density at ortho and para positions (D) decreases electron density at meta position ln the electrolysis of acidulated water, it is desired to obtain 1.12 cc of Hydrogen per second under S.T.P. condition. The current to be passed is (A) 19.3 Amp (B) 0.965 Amp (C) 1.93 Amp (D) 9.65 Amp Lucas test is associated with (A) Carboxylic acid (B) Alcohols (C) Aldehydes (D) Phenols Malleability and ductility of` metals can be accounted due to (A) the presence of electrostatic force (B) the crystalline structure in metal (C) the capacity of` layers of metal ions to slide over the other (D) the interaction of` electrons with metal ions in the lattice Mass of 0.1 mole of Methane is (A) 1 g (B) 16 g (C) 1.6 g

Answer: (D)

Answer: (A)

Answer: (D)

Answer: (C)

Answer: (D)

Answer: (B)

Answer: (C)

Answer: (C)

1(D) 0.1 g Maximum number of molecules of CH3I that can react with a molecule of CH3NH2 are (A) 1 (B) 2 (C) 4 (D) 3 Mercury is a liquid metal because (A) it has a completely filled s-orbital (B) it has a small atomic size (C) it has a completely filled d-orbital that prevents d-d overlapping of orbitals (D) it has a completely filled d-orbital that causes d-d overlapping Mesomeric effect involves delocalisation of (A) pi electrons (B) sigma electrons (C) protons (D) none of these Methoxy methane and ethanol are (A) Position isomers (B) Chain isomers (C) Functional isomers (D) Optical isomers Mg+2 is isoelectronic with (A) Ca2+ (B) Na+ (C) Zn2+ (D) Cu2+ Molarity of a given orthophosphoric acid solution is 3M. It's normality is (A) 1 N (B) 2 N (C) 0.3 N (D) 9 N Mole fraction of the solute in a 1.00 molal aqueous solution is (A) 1.7700 (B) 0.1770 (C) 0.0177 (D) 0.0344 Molecules of a noble gas do not possess vibrational energy because a noble gas ______. (A) is chemically inert (B) is monoatomic (C) is diamagnetic (D) has completely filled shells N2 + 3H2 2NH3 + heat. What is the effect of the increase of temperature on the equilibrium of the reaction? (A) equilibrium is shifted to the left (B) equilibrium is shifted to the right (C) equilibrium is unaltered (D) reaction rate does not change Name the type of the structure of silicate in which one oxygen atom of [SiO4]4 is shared? (A) Three dimensional (B) Linear chain silicate (C) Sheet silicate (D) Pyrosilicate n-propyl bromide on treating with alcoholic KOH produces (A) propane (B) propene (C) propyne

Answer: (D)

Answer: (C)

Answer: (A)

Answer: (C)

Answer: (B)

Answer: (D)

Answer: (C)

Answer: (B)

Answer: (A)

Answer: (D)

Answer: (B)

1(D) propanol Of the following complex ions, which is diamagnetic in nature? (A) [CoF6]3 (B) [NiCl4]2 (C) [Ni(CN)4]2 (D) [CuCl4]2 Of the following which one is classified as polyester polymer? (A) Nylon-66 (B) Terylene (C) Backelite (D) Melamine One dm3 solution containing 10 5 moles each of Cl ions and CrO ions is treated with 4 10 mole of silver nitrate. Which one of the following observations is made? [KSP Ag2 CrO4, = 4 X 10 12] [KSP AgCl = 1 x10 10] (A) Silver chromate gets precipitated first. (B) Precipitation does not occur. (C) Both silver chromate and silver chloride start precipitating simultaneously. (D) Silver chloride gets precipitated first. One gram of silver gets distributed between 10 cm3 of molten zinc and 100 cm3 of molten lead at 800C. The percentage of silver in the zinc layer is approximately ______. (A) 91 (B) 89 (C) 94 (D) 97 One mole of an organic compound 'A' with the formula C3H8O reacts completely with two moles of HI to form X and Y. When 'Y' is boiled with aqueous alkali forms Z.Z answers the iodoform test. The compound 'A' is ______. (A) Propan 1 o1 (B) Propan 2 o1 (C) methoxyethane (D) ethoxyethane One mole of oxygen at 273 k and one mole of sulphur dioxide at 546 k are taken in two separate containers, then, (A) kinetic energy of O2 > kinetic energy of SO2 . (B) kinetic energy of O2 < kinetic energy of SO2. (C) kinetic energy of both are equal. (D) None of these One mole of which of the following has the highest entropy? (A) liquid nitrogen (B) hydrogen gas (C) mercury (D) diamond Paracetamol is a/ an (A) antimalarial (B) antipyretic (C) analgesic (D) both 2 and 3 Peroxide ion ______. a) is diamagnetic. b) has five completely filled antibonding molecular orbitals. c) is isoelectronic with neon. d) has bond order one. Which one of these is correct? (A) a), b) and d)

Answer: (C)

Answer: (B)

Answer: (D)

Answer: (D)

Answer: (C)

Answer: (B)

Answer: (B)

Answer: (D)

Answer: (C)

1(B) d) and c) (C) a) and d) (D) a), b) and c) pH value of which one of the following is not equal to one? (A) 0.05 M H2SO4 (B) 0.1 M HNO3 (C) 50cm3 of 0.4 M HCI +50 cm3 of 0.2M NaOH (D) 0.1 M CH3 COOH Phenol forms a tribromo derivative "X" is ______. (A) bromine in water (B) bromine in benzene (C) bromine in carbon tetrachloride at 0C. (D) potassium bromide solution Presence of halogen in organic compounds can be detected using (A) Beilstien's test (B) kjeldahl test (C) Duma's test (D) Leibig's test Rate of physical adsorption increases with (A) decrease in pressure (B) increase in temperature (C) decrease in surface area (D) decrease in temperature Reaction of methyl bromide with aqueous sodium hydroxide involves ______. (A) SN 1 mechanism (B) racemisation (C) SN2 mechanism (D) inversion of configuration Standard electrode potential for Sn4+ / Sn2+ couple is +0.15 V and that for the Cr3+ / Cr couple is 0.74 V. These two couples in their standard state are connected to make a cell. The cell potential will be (A) +1.83 V (B) +1.19 V (C) +0.89 V (D) +0.18 V Standard electrode potential of three metals X, Y and Z are 1.2 V, +0.5 V and 3.0 V respectively. The reducing power of these metals will be (A) X > Y > Z (B) Y > Z > X (C) Y > X > Z (D) Z > X > Y The activation energy for a reaction at the temperature TK was found to be 2.303 RT J mol 1. The ratio of the rate constant to Arrhenius factor is ______. (A) 10 2 (B) 10 1 (C) 2 10 2 (D) 2 10 3 The amino acid which is not optically active is (A) glycine (B) alanine (C) serine (D) lactic acid The amount of heat evolved when 500 cm3 of 0.1 M HCI is mixed with 200 cm3 of 0.2 M NaOH is ______. (A) 1.292 kJ (B) 2.292 kJ (C) 3.392 kJ

Answer: (D)

Answer: (A)

Answer: (A)

Answer: (D)

Answer: (C)

Answer: (C)

Answer: (D)

Answer: (B)

Answer: (A)

Answer: (B)

1(D) 0.292 kJ The angle strain in cyclobutane is (A) 2444' (B) 2916' (C) 1922' (D) 944' The basic principle of Cottnell's precipitator is (A) Le-chatelier's principle (B) peptisation (C) neutralisation of charge on colloidal particles (D) scattering of light The best method for the conversion of an alcohol into an alkyl chloride is by treating the alcohol with (A) SOCl2 in presence of pyridine (B) Dry HCl in the presence of anhydrous ZnCl2 (C) PCl3 (D) PCl5 The calculated bond order of super oxide ion ( ) is (A) 2.5 (B) 2 (C) 1.5 (D) 1 The carbon-carbon bond length in Benzene is (A) in between C2H6 and C2H2 (B) in between C2H4 and C2H2 (C) in between C2H6 and C2H4 (D) same as in C2H4 The characteristic not related to alkali metal is (A) low melting point (B) low electronegativity (C) high ionisation energy (D) their ions are isoelectronic with noble gases The chemical name of anisole is (A) Ethanoic acid (B) Methoxy benzene (C) Propanone (D) Acetone The colour of sky is due to (A) transmission of light (B) wavelength of scattered light (C) absorption of light by atmospheric gases (D) All of these The complex, [Pt (Py) (lNH3) Br Cl ] will have how many geometrical isomers? (A) 2 (B) 3 (C) 4 (D) 0 The complexes [Co (NH3)6] [Cr (CN)6] and [Cr(NH3)6] [Co(CN)6] are the examples of which type of isomerism? (A) Geometrical isomerism (B) Linkage isomerism (C) Ionization isomerism (D) Coordination isomerism The compound obtained when acetaldehyde reacts with dilute aqueous sodium hydroxide exhibits ______. (A) optical isomerism (B) geometric isomerism

Answer: (D)

Answer: (C)

Answer: (A)

Answer: (C)

Answer: (C)

Answer: (C)

Answer: (B)

Answer: (B)

Answer: (B)

Answer: (D)

Answer: (A)

1(C) both optical and geometric isomerism (D) neither optical nor geometric isomerism The compound on dehydrogenation gives a ketone. The original compound is Answer: (B) (A) primary alcohol (B) secondary alcohol (C) tertiary alcohol (D) carboxylic acid The compound which forms acetaldehyde when heated with dilute NaOH is Answer: (C) (A) 1 Chloro ethane (B) 1, 2 Dichloro ethane (C) 1, 1 Dichloro ethane (D) 1, 1, 1 Trichloro ethane The compound which is not founded during the dry distillation of a mixture of calcium Answer: (D) format and calcium acetate is (A) Propanone (B) Ethanal (C) Methanal (D) Propanal The condensation polymer among the following is (A) PVC (B) Polyethene (C) Rubber (D) Protein The correct order in which the first ionisation potential increases is (A) Na, K, Be (B) K, Na, Be (C) K, Be, Na (D) Be, Na, K The correct order of increasing bond length of C H, C O, C C and C = C is (A) C H < C O < C C < C = C (B) C H < C = C < C O < C C (C) C C < C = C < C O < C H (D) C O < C H < C C < C = C The correct order of ionisation energy of C, N, O, F is (A) C < N < O < F (B) C < O < N < F (C) F < O < N < C (D) F < N < C < O The correct sequence of reactions to convert p-nitrophenol into quinol involves ______. (A) hydrolysis, diazotization and reduction (B) reduction, diazotization and hydrolysis (C) diazotization, reduction and hydrolysis (D) hydrolysis, reduction and diazotization The correct sequence of steps involved in the mechanism of Cannizzaro's reaction is ______. (A) transfer of H , transfer of H+ and nucleophilic attack (B) nucleophilic attack, transfer of H and transfer of H+ (C) electrophilic attack by OH , transfer of H+ and transfer of H + (D) transfer of H , nucleophilic attack and transfer of H The correct set of four Quantum numbers for outermost electron of Potassium (Z = 19) is (A) 4, 0, 0, (B) 3, 0, 0, Answer: (D)

Answer: (B)

Answer: (B)

Answer: (B)

Answer: (B)

Answer: (B)

Answer: (A)

1

(C) 4, 1, 0, (D) 3, 1, 0, The correct statement with regard to (A) (B) is more stable than is more stable than and are equally stable Answer: (D) and is Answer: (B)

(C) Both

(D) Both and do not exist The d-electron configurations of Cr2+, Mn2+, Fe2+ and Co2+ are d4, d5, d6 and d7 respectively. Which one of the following will exhibit minimum paramagnetic behaviour? (A) [Cr(H2O)6]2+ (B) [Mn(H2O)6]2+ (C) [Fe(H2O)6]2+ (D) [Co(H2O)6]2+ (At. nos. Cr = 24, Mn = 25, Fe = 26, Co = 27) The electrode potentials for and are + 0.15

Answer: (C)

V and + 0.50 V respectively. The value of will be (A) 0.150 V (B) 0.500 V (C) 0.325 V (D) 0.650 V The electronic configuration of Cr3+ is (A) [Ar]3d54s1 (B) [Ar]3d24s1 (C) [Ar]3d34s0 (D) [Ar]3d44s2 The electrophile involved in the sulphonation of Benzene is (A) (B) so3 (C)

Answer: (C)

Answer: (B)

(D) The empirical formula of a nonelectrolyte is C1H2O1. A solution containing 6 g of the Answer: (C) compound exerts the same osmotic pressure as that of 0.05 M glucose solution at the same temperature. The molecular formula of the compound is ______. (A) C3H6O3 (B) C2H4O2 (C) C4H8O4 (D) C5H10O5 The energies E1 and E2 of two radiations are 25 eV and 50 eV respectively. The Answer: (C) relation between their wavelengths i.e. (A) (B) (C) = = =2 Answer: (A) and will be

(D) =4 The enthalpy of formation of NH3 is kJ mo1 1. The enthalpy change for the 46

1reaction : 2NH3(g) N2(g) + 3H2(g) is (A) +92kJ (B) +46 kJ (C) +184 kJ (D) +23 kJ The following data is obtained during the first order thermal decomposition of 2A(g) B(g) + C(s) , at constant volume and temperature. Sr. No. Time Total pressure in Pascal 1 At the end of 10 minutes 300 300 2 After completion 200 200 The rate constant in min 1 is ______. (A) 6.93 (B) 0.0693 (C) 69.3 (D) 0.00693 The freezing point depression constant for water is 1.86Cm1. If 5.00 g Na2SO4 is dissolved in 45.0 g H2O, the freezing point is changed by 3.82C. Calculate the van't Hoff factor for Na2SO4 (A) 0.381 (B) 2.05 (C) 2.63 (D) 3.11 The function of Fe(OH)3 in the contact process is (A) to remove moisture (B) to remove dust particles (C) to remove arsenic impurity (D) to detect colloidal impurity The general formula of a cycloalkane is (A) CnH2n + 2 (B) CnH2n 2 (C) CnH2n (D) CnHn The incorrect statement in respect of Chromyl chloride test is (A) formation of Chromyl chloride (B) liberation of Chlorine (C) formation of red vapours (D) formation of lead chromate The IUPAC name for tertiary butyl iodide is (A) 4-Iodobutane (B) 2-Iodobutane (C) 1-Iodo, 3-methyl propane (D) 2-Iodo 2methyl propane The IUPAC name of [Co(NH3)5 ONO]2+ ion is (A) Penta ammine nitro cobalt (III) ion (B) Penta ammine nitro cobalt (IV) ion (C) Penta ammine nitrito cobalt (IV) ion (D) Penta ammine nitrito cobalt (III) ion The IUPAC name of K2 [Ni (CN)4] is ______. (A) Potassium tetracyanatonickelate (II) (B) Potassium tetracyanonickelate (II) (C) Potassium tetracyanonickel (III) (D) Potassium tetracyanatonickel (II) The Lassaigne's extract is boiled with conc. HNO3 while testing for halogens. By doing so it. (A) Increase the concentration of ions (B) Decomposes Na2S and NaCN, if formed

Answer: (B)

Answer: (C)

Answer: (C)

Answer: (C)

Answer: (B)

Answer: (D)

Answer: (D)

Answer: (B)

Answer: (B)

1(C) Helps in the precipitation of AgCl (D) Increases the solubility product of AgCl The letter 'D' in D glucose signifies ______. (A) dextrorotatory (B) configuration at all chiral carbons (C) configuration at a particular chiral carbon (D) that it is a monosaccharide The magnetic moment of a transition metal ion is B.M. Therefore the number of unpaired electrons present in it is (A) 1 (B) 2 (C) 3 (D) 4 The mass of a metal, with equivalent mass 31.75, which would combine with 8 g of oxygen is (A) 31.75 (B) 3.175 (C) 8 (D) 1 The maximum number of hydrogen bonds that a molecule of water can have is (A) 1 (B) 2 (C) 3 (D) 4 The monomers of Buna-S rubber are (A) vinyl chloride and sulphur (B) butadiene (C) styrene and butadiene (D) isoprene and butadiene The noble gas mixture is cooled in a coconut bulb at 173 K. The gases that are not adsorbed are (A) He and Ne (B) Ar and Kr (C) He and Xe (D) Ne and Xe Which one of the following shows functional isomerism? (A) CH2Cl2 (B) C2H5OH (C) C3H6 (D) C2H4 The number of disulphide linkages present in insulin are (A) 1 (B) 2 (C) 3 (D) 4 The number of gram molecules of chlorine in 6.02 1025 hydrogen chloride molecules is (A) 5 (B) 50 (C) 100 (D) 10 The number of nodal planes present in s antibonding orbitals is (A) 1 (B) 2 (C) 0 (D) 3 The number of unidentate ligands in the complex ion is called

Answer: (C)

Answer: (C)

Answer: (A)

Answer: (D)

Answer: (C)

Answer: (A)

Answer: (B)

Answer: (B)

Answer: (B)

Answer: (A)

Answer: (B)

1(A) EAN (B) Coordination number (C) primary valency (D) oxidation number The one which has least Iodine value is (A) Ghee (B) Groundnut oil (C) Sunflower oil (D) Ginger oil The order of stability of metal oxides is (A) Fe2O3 < Cr2O3 < AIZO3 < MgO (B) Fe2O3 < Al2O3 < Cr2O3 < MgO (C) Al2O3 < MgO < Fe2O3< Cr2O3 (D) Cr2O3 < MgO < Al2O3 < Fe2O3 Which one of the following statement is no true? (A) Oxides of sulphur, nitrogen and carbon are the most widespread air pollutant (B) pH of drinking water should be between 5.5 9.5 (C) Concentration of DO below 6 ppm is good for the growth of fish (D) Clean water would have a BOD value of less than 5 ppm Which one of the following is wrongly matched? (A) [Ni(CO)4] neutral ligand (B) [Cu (NH3 )4]+2 square planar (C) [Co (en )3 ]+3 follows EAN rule (D) [Fe (CN )6] 3 sp3d2 The oxidation state of iron in K4 [Fe (CN )6] is (A) 2 (B) 3 (C) 4 (D) 1 The oxide of an element whose electronic configuration is ls2 2s2 2p6 3s1 is (A) Basic (B) Acidic (C) Neutral (D) Amphoteric The product formed when hydroxylamine condenses with a carbonyl compound is called (A) hydrazone (B) hydrazine (C) oxime (D) hydrazide The r.m.s. velocity of molecules of a gas of density 4 kg m 3 and pressure 1.2 105 Nm 2 is (A) 120 ms 1 (B) 600 ms 1 (C) 300 ms 1 (D) 900 ms 1 The rate equation for a reaction: A B is r = K [A]. If the initial concentration of the reactant is a mol dm 3, the half life period of the reaction is (A) (B) (C) (D)

Answer: (A)

Answer: (A)

Answer: (C)

Answer: (D)

Answer: (A)

Answer: (A)

Answer: (C)

Answer: (C)

Answer: (C)

1Answer: (B) The reaction involved in the oil of Winter Green test is Salicylic acid product. The product is treated with N&2CO3 solution. The missing reagent in the above reaction is (A) Ethanol (B) Methanol (C) Phenol (D) NaOH The reagent used in Clemmenson's reduction is (A) alc. KOH (B) aq. K0H (C) Zn-Hg / con. HCl (D) Conc. H2SO4 The reagent used to convert an alkyne to alkene is (A) Zn / HCl (B) Sn / HCl (C) Zn Hg / HCl (D) Pd / H2 The set of quantum numbers for the outermost electron for copper in its ground state is ______. (A) 3, 2, 2, + (B) 4, 1, 1, + (C) 4, 2, 2, + (D) 4, 0, 0, + The spin only magnetic moment of Mn+4 ion is nearly ______. (A) 6 BM (B) 3 BM (C) 5 BM (D) 4 BM The standard electrode potential for the half cell reactions are: Zn++ + 2e Zn E = 0.76 V ++ Fe + 2e Fe E = 0.44 V The E.M.F. of the cell reaction : Fe++ + Zn Zn++ +Fe is (A) +1.20V (B) +0.32V (C) -0.32 V (D) -1.20 V The standard emf of a galvanic cell involving 3 moles of electrons in its redox reaction is 0.59 V. The equilibrium constant for the reaction of the cell is ______. (A) 1020 (B) 1025 (C) l030 (D) 1015 The temperature of the slag zone in the metallurgy of Iron using blast furnace is (A) 400 700 C (B) 800 1000 C (C) 1200 1500 C (D) 1500 1600 C The total number of atomic orbitals in fourth energy level of an atom is (A) 4 (B) 8 (C) 16 (D) 32 The value of H for the reaction X2g + 4Y2(g) 2XY4(g) is less than zero. Formation of XY4(g) will be favoured at

Answer: (C)

Answer: (D)

Answer: (D)

Answer: (D)

Answer: (B)

Answer: (C)

Answer: (B)

Answer: (C)

Answer: (A)

1(A) High pressure and low temperature (B) High temperature and high pressure (C) Low pressure and low temperature (D) High temperature and low pressure The van't Hoff factor i for a compound which undergoes dissociation in one solvent and association in other solvent is respectively (A) Greater than one and greater than one (B) Less than one and greater than one (C) Less than one and less than one (D) Greater than one and less than one The volume of 10N and 4N HCl required to make 1 litre of 7N HCl are (A) 0.75 litre of 10N HCl and 0.25 litre of 4N HCl (B) 0.80 litre of 10N HCl and 0.20 litre of 4N HCl (C) 0.60 litre of 10N HCl and 0.40 litre of 4N HCl (D) 0.50 litre of 10N HCl and 0.50 litre of 4N HCl The wave number of the spectral line in the emission spectrum of hydrogen will be equal to times the Rydberg's constant if the electron jumps from ______. (A) n = 10 t0 n = 1 (B) n = 3 to n = 1 (C) n = 2 t0 n = 1 (D) n = 9 t0 n = 1 There are 20 naturally occurring amino acids. The maximum number of tripeptides that can be obtained is (A) 7465 (B) 5360 (C) 8000 (D) 6410 Thermodynamic standard conditions of temperature and pressure are (A) 0C and 1 atm (B) 273 k and 101.3 k Pa (C) 298 k and 1 atm (D) 0C and 101.3 k Pa Three moles of PCl5, three moles of PCI3 and two moles of Clz are taken in a closed vessel. If at equilibrium the vessel has 1.5 moles of PCl5, the number of moles of PCl3 present in it is (A) 5 (B) 3 (C) 6 (D) 4.5 Time required for 100 percent completion of a zero order reaction is ______. (A) (B) (C) a k (D) Two gases A and B having the same volume diffuse through a porous partition in 20 and 10 seconds respectively. The molecular mass of A is 49 u. Molecular mass of B will be (A) 25.00 u (B) 50.00 u (C) 12.25 u (D) 6.50 u

Answer: (D)

Answer: (D)

Answer: (B)

Answer: (C)

Answer: (C)

Answer: (D)

Answer: (D)

Answer: (C)

1Vapour pressure of pure 'A' is 70 mm of Hg at 25 C. It forms an ideal solution with 'B' in which mole fraction of A is 0.8. lf the vapour pressure of the solution is 84 mm of Hg at 25 C, the vapour pressure of pure 'B' at 25 C is (A) 70 mm (B) 140 mm (C) 28 mm (D) 56 mm Waxes are esters of (A) glycerol (B) long chain alcohols (C) glycerol and fatty acid (D) long chain alcohols and long chain fatty acids When a sulphur sol is evaporated sulphur is obtained. On mixing with water sulphur sol is not formed. The sol is (A) hydrophilic (B) hydrophobic (C) reversible (D) lyophilic When carbon monoxide is passed over solid caustic soda heated to 200C, it forms (A) Na2CO3 (B) NaHCO3 (C) HCOONa (D) CH3COONa When compared to G0 for the formation of Al2O3 , the AG0 for the formation of Cr2O3 is (A) higher (B) lower (C) same (D) unpredicted When conc. H2SO4 is heated with P2 05 , the acid is converted into (A) sulphur (B) sulphur dioxide (C) sulphur trioxide (D) a mixture of sulphur dioxide and sulphur trioxide When KBr is dissolved in water, K+ ions are (A) oxidised (B) reduced (C) hydrolysed (D) hydrated When sulphur dioxide is passed in an acidified K2Cr2 O7 solution, the oxidation state of sulphur is changed from (A) + 4 to 0 (B) + 4 to + 2 (C) + 4 to + 6 (D) + 6 to + 4 When the azimuthal quantum number has the value of 2, the number of orbitals possible are (A) 7 (B) 5 (C) 3 (D) O Which complex can not ionise in solution? (A) [Pt(NH3)6] Cl4 (B) K2[pt(F6)] (C) K4[Fe(CN)6] (D) [CoCl3(NH3)3] Which is the most easily liquifiable rare gas? Answer: (B)

Answer: (D)

Answer: (B)

Answer: (C)

Answer: (A)

Answer: (C)

Answer: (D)

Answer: (C)

Answer: (B)

Answer: (D)

Answer: (A)

1(A) Xe (B) Kr (C) Ar (D) Ne Which metal has a greater tendency to form metal oxide? (A) Cr (B) Fe (C) Al (D) Ca Which of the following can be measured by the Ostwald-Walker dynamic method (A) Relative lowering of vapour pressure (B) Lowering of vapour pressure (C) Vapour pressure of the solvent (D) all of these Which of the following compounds has the lowest melting point? (A) CaF2 (B) CaCl2 (C) CaBr2 (D) CaI2 Which of the following electrolytic solutions has the least specific conductance `? (A) 0.02 N (B) 0.2 N (C) 2 N (D) 0.002 N Which of the following elements is present as the impurity to the maximum extent in the pig iron? (A) Phosphorus (B) Manganese (C) Carbon (D) Silicon Which of the following forms a colour less solution in aqueous medium? (A) Ti 3+ (B) Sc 3+ (C) V 3+ (D) Cr 3+ Which of the following has the maximum number of unpaired 'd' electrons? (A) Zn2+ (B) Fe2+ (C) Ni3+ (D) Cu+ Which of the following has the minimum bond length? (A) O2 (B) (C) (D) Which of the following is an intensive property? (A) temperature (B) surface tension (C) viscosity (D) all of these Which of the following is correct option for free expansion of an ideal gas under adiabatic condition? (A) q = 0, T < 0, w 0 (B) q = 0, T 0, w = 0 (C) q 0, T = 0, w = 0 (D) q = 0, T = 0, w = 0 Answer: (D)

Answer: (D)

Answer: (A)

Answer: (D)

Answer: (D)

Answer: (C)

Answer: (B)

Answer: (B)

Answer: (B)

Answer: (D)

1Which of the following is least likely to behave is Lewis base? (A) OH (B) H2O (C) NH3 (D) BF3 Which of the following organic compounds answers to both iodoform test and Fehling's test'? (A) ethanol (B) methanal (C) ethanal (D) propanone Which of the following pairs of metals is purified by van Arkel method? (A) Ni and Fe (B) Ga and In (C) Zr and Ti (D) Ag and Au Which one of the following is present as an active ingredient in bleaching powder for bleaching action? (A) CaCl2 (B) CaOCl2 (C) Ca(OCl)2 (D) CaO2Cl Which of the following species does not exert a resonance effect? (A) C6H5NH2 (B) C6H5NH3 (C) C6H5OH (D) C6H5Cl Which of the two ions from the list given below that have the geometry that is explained by the same hybridization of orbitals, (A) (B) (C) and and and

Answer: (D)

Answer: (C)

Answer: (C)

Answer: (C)

Answer: (B)

Answer: (B)

?

(D) SCN and Which one of the following conformations of cyclohexane is the least stable? (A) Boat (B) Half-chair (C) Chair (D) Twisted-boat Which one of the following conversions involve change in both hybridization and shape? (A) NH3 NH (B) CH4 C2H6 (C) H2O H3O+ (D) BF3 BF Which one of the following does NOT involve coagulation? (A) Peptization (B) Formation of delta regions (C) Clotting of blood by the use of ferric chloride (D) Treatment of drinking water by potash alum Which one of the following forms propanenitrile as the major product? (A) Propyl bromide + alcoholic KCN (B) Ethyl bromide + alcoholic KCN (C) Ethyl bromide + alcoholic AgCN

Answer: (B)

Answer: (D)

Answer: (A)

Answer: (B)

1(D) Propyl bromide + alcoholic AgCN Which one of the following has maximum number of atoms of oxygen? (A) 2 g of water (B) 2 g of sulphur dioxide (C) 2 g of carbon dioxide (D) 2 g of carbon monoxide. Which one of the following is a molecular crystal? (A) Quartz (B) Rock salt (C) Diamond (D) Dry ice Which one of the following is a second order reaction? (A) CH3COOCH3 + NaOH CH3COONa + H2O (B) H2 + Cl2 2HCl (C) NH4NO3 N2 + 3H2O (D) H2 + Br2 2HBr Which one of the following is an example for homogeneous catalysis? (A) Manufacture of ammonia by Haber's process (B) Manufacture of sulphuric acid by contact process (C) Hydrogenation of oil (D) Hydrolysis of sucrose in presence of dilute hydrochloric acid Which one of the following is employed as Antithistamine? (A) Omeprazole (B) Chloramphenicol (C) Diphenyl hydramine (D) Norothindrone Based on the first law of thermodynamics, which one of the following is correct? (A) For an isochoric process, U = q (B) For an isochoric process, q = +w (C) For a cyclic process, q = w (D) For an adiabatic process, U = w 0 G Vs T plot in the Ellingham's diagram slopes downwards for the reaction (A) Mg + (B) 2Ag + (C) C + O2 MgO O2 Ag2O O2 CO

Answer: (A)

Answer: (D)

Answer: (A)

Answer: (D)

Answer: (C)

Answer: (C)

Answer: (C)

(D) CO + O2 CO2 Answer: (C) -maltose consists of (A) two -D-glucopyranose units with 1-2 glycosidic linkage (B) one -D-glucopyranose units and one -D-glucopyranose unit with 1-2 glycosidic linkage (C) two -D-glucopyranose units with 1-4 glycosidic linkage (D) two -D-glucopyranose units with 1-4 glycosidic linkage 0.06 mole of KNO3 solid is added to 100 cm3 of water at 298 k. The enthalpy of KNO3aq Answer: (A) solution is 35.8 kJmol 1. After the solute is dissolved the temperature of the solution will be (A) 293 k (B) 298 k (C) 301 k (D) 304 k 1 103 m solution of Pt(NH3)4Cl4 in H2O shows depression in freezing point by Answer: (C) 0.0054C. The structure of the compound will be (Given Kfp(H2O) = 1.860 km1) (A) [Pt(NH3)4]Cl4

1(B) [Pt(NH3)3Cl]Cl3 (C) [Pt(NH3)2Cl2]Cl2 (D) Pt(NH3)Cl3]Cl 1.2 g of organic compound on Kjeldahilization liberates ammonia which consumes 30 cm3 of 1 N HCl. The percentage of nitrogen in the organic compound is ______. (A) 35 (B) 30 (C) 20.8 (D) 46.67 50 cm3 of 0.2 N HCl is titrated against 0.1 N NaOH solution. The titration was discontinued after adding 50 cm3 of NaOH. The remaining titration is completed by adding 0.5 N KOH. The volume of KOH required for completing the titration is (A) 12 cm3 (B) 10 cm3 (C) 21.0 cm3 (D) 16.2 cm3 9.65 coulombs of electric current is passed through fused anhydrous MgCl2. The magnesium metal thus obtained is completely converted into a Grignard reagent. The number of moles of Grignard reagent obtained is (A) 1 104 (B) 5 104 (C) 1 105 (D) 5 105 A buffer solution contains 0.1 mole of sodium acetate dissolved in 1000 cm3 of 0.1 M acetic acid. To the above buffer solution, 0.1 mole of sodium acetate is further added and dissolved. The pH of the resulting buffer is ______. (A) pKa + 1 (B) pKa (C) pKa + Log 2 (D) pKa = Log 2 A chemical reaction proceeds into the following steps Step I, 2A X fast Step II, X + B Y slow Step III, Y + B Product fast The rate law for the overall reaction is (A) Rate = k[A]2 (B) Rate = k[B]2 (C) Rate = k[A][B] (D) Rate = k[A]2[B] A mixture of CaCl2 and NaCl weighing 4.44 g is treated with sodium carbonate solution to precipitate all the calcium ions as calcium carbonate. The calcium carbonate so obtained is heated strongly to get 0.56 g of CaO. The percentage of NaCl in the mixture is [Atomic mass of Ca = 40] (A) 75 (B) 31.5 (C) 40.2 (D) 25 A plot of In k against ordinate axis equal to (A) (B) (abscissa) is expected to be a straight line with intercept on

Answer: (A)

Answer: (B)

Answer: (D)

Answer: (C)

Answer: (D)

Answer: (A)

Answer: (B)

1

(C) (D) R S A radioactive atom emits two particles and one particle successively. The number of neutrons in the nucleus of the product will be (A) X 4 Y (B) X Y 5 (C) X Y 3 (D) X Y 6 A solution is 0.1 M with respect to Ag+, Ca2+, Mg2+ and AI3+ which will precipitate at lowest concentration of [ ] when solution of Na3PO4 is added? (A) Ag3PO4(Ksp = 1 106) (B) Ca3(PO4)2(Ksp = 1 1033) (C) Mg3(PO4)2(Ksp = 1 1024) (D) AIPO4(Ksp = 1 1020) A solution of two liquids boils at a temperature more than the boiling point of either of them. Hence, the binary solution shows (A) positive deviation from Raoult's law (B) negative deviation from Raoult's law (C) positive or negative deviation from Raoult's law depending upon the composition (D) no deviation from Raoult's law An element belongs to Group 15 and third period of the periodic table. Its electonic configuration will be (A) 1s22s22p3 (B) 1s22s22p4 (C) 1s22s22p63s23p3 (D) 1s22s22p63s23p2 An example for autocatalysis is (A) oxidation of NO to NO2 (B) oxidation of SO2 to SO3 (C) decomposition of KClO3 to KCl and O2 (D) oxidation of oxalic acid by acidified KMnO4 Anhydrous ferric chloride is prepared by (A) Dissolving Fe(OH)3 in concentrated HCl (B) Dissolving Fe(OH)3 in dilute HCl (C) Passing dry HCl over heated iron scrap (D) Passing dry Cl2 gas over heated iron scrap At pH = 4 glycine exists as (A) H3 CH2 COO

Answer: (B)

Answer: (D)

Answer: (B)

Answer: (C)

Answer: (D)

Answer: (D)

Answer: (B)

(B) H3 CH2 COO (C) H2N CH2 COOH (D) H2N CH2 COO By heating phenol with chloroform in alkali, it is converted into (A) salicylic acid (B) salicylaldehyde (C) anisole (D) phenyl benzoate Carbon cannot reduce Fe2O3 to Fe at a temperature below 983 K because ______. (A) CO is thermodynamically more stable then Fe2O3 (B) free energy change for the formation of CO is more negative then that of Fe2O3 (C) iron has higher affinity towards oxygen then carbon (D) carbon has higher affinity towards oxygen then iron Chemical reactions with very high Ea values are generally (A) very fast

Answer: (B)

Answer: (C)

Answer: (B)

1(B) very slow (C) moderately fast (D) spontaneous Consider the following gaseous equilibria with equilibrium constants K1 and K2 respectively. SO2 (g) + O2 (g) SO3 (g) 2SO3 (g) 2SO2 (g) + O2 (g) The equilibrium constants are related as ______. (A) (B) (C) (D) Decreasing order of reactivity of hydrogen halide acids in the conversion of ROH RX is (A) HCI > HBr > HI > HF (B) HI > HBr > HCI > HF (C) HF > HCI> HBr > HI (D) HF > HBr > HI > HCI During the adsorption of Krypton on activated charcoal at low temperature; ______. (A) H > 0 and S < 0 (B) H < 0 and S < 0 (C) H < 0 and S > 0 (D) H > 0 and S > 0 During the fusion of an organic compound with sodium metal, nitrogen of the compound is converted into (A) NaNO2 (B) NaNH2 (C) NaCN (D) NaNC E1, E2 and E3 are the emfs of the following three galvanic cells respectively: (i) Zn (s) | Zn2+ (0.1 M) || Cu2+ (1M) | Cu (s) (ii) Zn (s) | Zn2+ (1 M) || Cu2+ (1M) | Cu (s) (iii) Zn (s) | Zn2+ (1 M) || Cu2+ (0.1M) | Cu (s) Which one of the following is true? (A) E1 > E2 > E3 (B) E2 > E1 > E3 (C) E3 > E2 > E1 (D) E3 > E1 > E2 Equal weights of CH4 and H2 are mixed in a container at 25C. Fraction of total pressure exerted by methane is (A) 1/2 (B) 1/3 (C) 1/9 (D) 8/9 Ethyl benzene CANNOT be prepared by ______. (A) Wurtz-Fittig reaction (B) Wurtz reaction (C) Clemmensen reduction (D) Friedel-Crafts reaction Excess of silver nitrate solution is added to 100 ml of 0.01 M Pentaaqua chloro chromium (III) chloride solution. The mass of silver chloride obtained in grams is

Answer: (A)

Answer: (B)

Answer: (B)

Answer: (C)

Answer: (A)

Answer: (C)

Answer: (B)

Answer: (B)

1[Atomic mass of silver is 108] (A) 143.5 10 3 3 (B) 287 10 (C) 287 10 2 (D) 143.5 10 2 Following is the substitution reaction in which CN replaces Cl

Answer: (B)

R Cl + R CN + KCl To obtain propanenitrile, R should be Cl (A) 1- chloropropane (B) chloroethane (C) 2-chloropropane (D) chloromethane For a chemical reaction of the type Answer: (C) A B, K = 2.0 and B C, K = 0.01 Equilibrium constant for the reaction 2C 2A is (A) 25 (B) 50 (C) 2500 (D) 4 104 For a reaction A + B C + D if the concentration of A is doubled without altering the Answer: (C) concentration of B, the rate gets doubled. lf the concentration of B is increased by nine times without altering the concentration of A, the rate gets tripled. The order of the reaction is (A) 2 (B) 1 (C) (D) For a reaction to be spontaneous at all temperatures (A) G and H should be negative (B) G and H should be positive (C) G = S = 0 (D) H < G For a reversible reaction : X(g) + 3Y(g) 2Z(g) H = -40 kJ the standard entropies of X, Y and Z arc 60, 40 and 50 JK 1 mol 1 respectively. The temperature at which the above reaction attains equilibrium is about (A) 400 K (B) 500 K (C) 273 K (D) 373 K For preparing a buffer solution of pH = 7.0, which buffer system you will choose? (A) H3 PO4 ,H2 (B) H2 (C) , Answer: (D) ,

Answer: (A)

Answer: (B)

Answer: (B)

(D)H3 PO4 , For the following reaction C6H12O6(aq) + H2(g) C6H14O6(aq) Which one of the following is not affected by the addition of catalyst? (A) Rate of forward reaction (B) Rate of backward reaction

1(C) Time required to reach the equilibrium (D) Spontaneity For the given alkane

Answer: (B)

The IUPAC name is (A) 1, 1 dimethyl-5-ethyl octane (B) 6-ethyl-2-methyl nonane (C) 4-ethyl-8-methyl nonane (D) 2-methyl, -6-propyl octane For the reactions I2(aq) I2(oil) Equilibrium constant is K1 I2(oil) I2(ether) Equilibrium constant is K2 for the reaction I2(aq) I2(ether) Equilibrium constant is K3 The relation between K1, K2, K3 is (A) K3 = K1 + K2 (B) K3 = K1K2 (C) K3 = K1/K2 (D) K3 = K2/K1 For the reversible reaction, A(s) + B(g) C(g) + D(g) G = -350 kJ, which one of the following statements is true? (A) The entropy change is negative (B) The reaction is thermodynamically nonfeasible (C) The reaction should be instantaneous (D) Equilibrium constant is greater then one. For transition metal octahedral complexes, the choice between high spin and low spin electronic configurations arises only for (A) d1 to d3 complexes (B) d4 to d7 complexes (C) d7 to d9 complexes (D) d1, d2 and d8 complexes Formic acid is a stronger acid than acetic acid. This can be explained using (A) I effect (B) +M effect (C) M effect

Answer: (B)

Answer: (D)

Answer: (B)

Answer: (D)

(D) +I effectGenerally, the first ionization energy increases along a period. But there are some exceptions. The one which is NOT an exception is ______. (A) Be and B (B) Na and Mg (C) Mg and Al (D) N and O Given a gas phase reaction 2A(g) + B(g) C(g) + D(g) Which one of the following changes will affect the value of KC? (A) Addition of inert gas (B) Addition of catalyst (C) Addition of reactants (D) Increasing in temperature Given exothermic reaction (aq) + 6H2O(1) [Co(H2O)]2+ +4CI Which one of ?

Answer: (B)

Answer: (D)

Answer: (C)

the following will decrease the equilibrium concentration of (A) Addition of HCI

1(B) Addition of Co(NO3)2 (C) The solution is diluted with water (D) The temperature is increased Given reaction

Answer: (B)

Y in the reaction is (A) Hexane (B) Cyclohexane (C) Cyclohexylcyclohexane (D) Cyclohexylether Given the following reactions involving A, B, C and D (i) C + B+ C+ + B (ii) A+ + D No reaction (iii) C+ + A No reaction (iv) D + B+ D+ + B The correct arrangement of A, B, C, D in order of their decreasing ability as reducing agent (A) D > B > C > A (B) A > C > D > B (C) C > A > B > D (D) C > A > D > B Glucose contains in addition to aldehyde group (A) one secondary OH and four primary OH groups (B) one primary OH and four secondary OH groups (C) two primary OH and three secondary OH groups (D) three primary OH and- two secondary OH groups H2S is passed into one dm3 of a solution containing 0.1 mole of Zn2+ and 0.01 mole of Cu2+ till the sulphide ion concentration reaches 8.1 1019 moles. Which one of the following statements is true? [Ksp of ZnS and CuS are 3 1022 and 8 1036 respectively] (A) Both CuS and ZnS precipitate (B) Only ZnS precipitates (C) No precipitation occurs (D) Only CuS precipitates Hybridization of C2 and C3 of H3C CH = C = CH CH3 are (A) Sp, Sp3 (B) Sp2, Sp (C) Sp2, Sp2 (D) Sp, Sp Hydrogen bond is strongest in (A) S H O (B) O H S (C) F H F (D) O H N Hydrogen is prepared from H2O by adding (A) Ca, which acts as reducing agent (B) AI, which acts as oxidising agent (C) Ag, which acts as reducing agent (D) Au, which acts as oxidising agent Identify B and D is the following sequence of reactions. (A) Ethyl hydrogen sulphate and alcoholic KOH (B) Methanol and bromoethane (C) Ethanol and alcoholic KOH (D) Ethyl hydrogen sulphate and aqueous KOH If the energies of the two photons are in the ratio of 3: 2, their wavelengths will be in the ratio of

Answer: (D)

Answer: (B)

Answer: (A)

Answer: (B)

Answer: (C)

Answer: (A)

Answer: (C)

Answer: (A)

1(A) 2: 3 (B) 9: 4 (C) 3: 2 (D) 1: 2 If the molecular wt. of Na2S2O3 and I2 are M1 and M2 respectively, then what will be the equivalent wt. of Na2S2O3 and I2 in the following reaction? 2S2 + I2 S4 + 2I (A) M1, M2 (B) M1, M2/2 (C) 2M1, M2 (D) M1,2M2 In an alkaline medium, glycine predominantly exists as/in a /an (A) anion (B) cation (C) covalent form (D) zwitterions In aqueous solution glucose remains as (A) Only in open chain form (B) Only in pyranoze form (C) Only in furanose forms (D) In all three forms in equilibrium In chromite ore, the oxidation number iron and chromium are respectively ______. (A) +3, +6 (B) +3, +2 (C) +2, +3 (D) +2, +6 In Ramsay and Rayleigh's isolation of noble gases from air, the nitrogen of the air is finally converted into (A) NO and NO2 (B) NaNO2 only (C) NaNO2 and NaNO3 (D) NaNO3 only In the conversion

Answer: (B)

Answer: (A)

Answer: (D)

Answer: (C)

Answer: (C)

Answer: (A)

The sequence of the regents used are (A) (i) SOCl2 (ii) (iii) H2O, heat (B) (i) SOCl2 (ii) NH3 (C) (i) SOCl2 (ii) NH3 (iii) Heat (D) (i) SOCl2 (ii) KCN (iii) LiAlH In the conversion of

Answer: (D)

1X is (A) H2/Pt (B) Zn-Hg/HCl (C) Li/NH3 (D) NaBH4 Answer: (A) In the conversion of Br2 to , the oxidation number of Br changes from (A) zero to +5 (B) +1 to +5 (C) zero to 3 (D) +2 to +5 In the following electron dot structure, calculate the formal charge from left to right Answer: (B) nitrogen atom;

(A) 1, 1, +1 (B) 1, +1, 1 (C) +1, 1, 1 (D) +1, 1, +1 In the following, the element with the highest ionisation energy is (A) [Ne]3s23p1 (B) [Ne]3s23p3 (C) [Ne]3s23p2 (D) [Ne]3s23p4 In the reaction

Answer: (B)

Answer: (C)

R X the product B is (A) alkyl chloride (B) aldehyde (C) carboxylic acid (D) ketone In the reaction 2H2O2 2H2O + O2 (A) Oxygen is oxidised only (B) Oxygen is reduced only (C) Oxygen is neither oxidised nor reduced (D) Oxygen is both oxidised and reduced In Tollen's test, aldehydes (A) Are oxidised to acids (B) Are reduced to alcohol (C) Neither reduced nor oxidised (D) Precipitate Ag+ as AgCI In which of the following complex ion, the central metal ion is in a state of sp3d2 hybridisation? (A) [CoF6]3 (B) [Co(NH3)6]3+ (C) [Fe(CN)6]3 (D) [Cr (NH3)6]3+ In which one of the given formulae of xenon compounds there are five -bonds and three -bonds in it? (A) XeFO (B) XeF2O2 (C) XeF3O2 (D) XeF2O3 Increasing order of carbon-carbon bond length for the following is C2H4 C2H2 C6H6 C2H6

Answer: (D)

Answer: (A)

Answer: (A)

Answer: (D)

Answer: (D)

1(A) (B) (C) (D) (A) C < B < A < D (B) B < C < A < D (C) D < C < A < B (D) B < A < C < D Inductive effect involves (A) displacement of electrons (B) delocalisation of electrons (C) delocalisation of electrons (D) displacement of electrons Insulin regulates the metabolism of (A) minerals (B) amino acids (C) glucose (D) vitamins Liquor ammonia bottles are opened only after cooling. This is because (A) it is a mild explosive (B) it is a corrosive liquid (C) it is a lachrymatory (D) it generates high vapour pressure Lowest pKa is associated with

Answer: (A)

Answer: (C)

Answer: (D)

Answer: (C)

Maximum efficiency of a commercial refrigerator which operates between 10 (inside Answer: (B) temperature) and 25C (outside temperature) is (A) 13.3% (B) 11.45% (C) 24.75% (D) 20% Methyl bromide is converted into ethane by heating it in ether medium with Answer: (C) (A) Al (B) Zn (C) Na (D) Cu Monobromination of 2-methylbutane gives how many distinct isomers? Answer: (D) (A) One (B) Two (C) Three (D) Four More acidic than ethanol is Answer: (C) (A) CH3CH2CH2CH2CH2CH2CH2CH3 (B) CH3CO2CH2CH3

1(C) CH3COCH2COCH3 (D) CH3COCH3 NO2 is not obtained on heating (A) AgNO3 (B) KNO3 (C) Cu(NO3)2 (D) Pb(NO3)2 Number of isomeric forms (constitutional and sterioisomers) for [Rh(en)2(NO2)(SCN)]+ are (A) Three (B) Six (C) Nine (D) Twelve Of the following compounds, the oxime of which shows geometrical isomerism, is (A) Acetone (B) Diethylketone (C) Formaldehyde (D) Benzaldehyde One gram of silver gets distributed between 10 cm3 of molten zinc and 100 cm3 of molten lead at 800C. The percentage of silver still left in the lead layer is approximately (A) 5 (B) 2 (C) 1 (D) 3 Osmotic pressure observed when benzoic acid is dissolved in benzene is less than that expected from theoretical considerations. This is because (A) benzoic acid is an organic solute (B) benzoic acid has higher molar mass than benzene (C) benzoic acid gets associated in benzene (D) benzoic acid gets dissociated in benzene Out of the given two compounds, the vapour pressure of B at a particular temperature is

Answer: (B)

Answer: (D)

Answer: (D)

Answer: (D)

Answer: (C)

Answer: (A)

(A) higher than that of A (B) lower than that of A (C) higher or lower than A depending on the size of the vessel (D) same as that of A Paracetamol is (A) Methyl salicylate (B) Phenyl salicylate (C) N-acetyl p-amino phenol (D) Acetyl salicylic acid pH value of which one of the following is NOT equal to one? (A) 0.1 M HNO3 (B) 0.1 M CH3 COOH (C) 50 cm3 0.4 M HCl + 50 cm3 0.2 M NaOH (D) 0.05 M H2SO4 Platinum, Palladium and Iridium are called noble metals because (A) Alfred Nobel discovered them (B) They are shining lustrous and pleasing to look at

Answer: (C)

Answer: (B)

Answer: (D)

1(C) They are found in native state (D) They are inert towards many common reagents. Reaction of formaldehyde and ammonia gives (A) Hexamethylene tetramine (B) Bakelite (C) Urea (D) Triethylene Tetramine Solubility product of a salt AB is 1 10 8 M2 in a solution in which the concentration of + A ions is 10 3 M. The salt will precipitate when the concentration of B ions is kept 8 7 (A) between 10 M to 10 M (B) between 10 7 M to 10 6 M 5 (C) >10 M (D) CH3CI > CH3Br (B) CH3F > CH3Br > CH3CI (C) CH3CI> CH3F > CH3Br (D) CH3CI> CH3Br > CH3F The decomposition of a certain mass of CaCO3 gave 11.2 dm3 of CO2 gas at STP. The mass of KOH required to completely neutralise the gas is (A) 56 g (B) 28 g (C) 42 g (D) 20 g The density of a gas is 1.964 g dm 1 at 273 k and 76 cm Hg. The gas is (A) CH4 (B) C2H6 (C) CO2 (D) Xe The electronic transitions from n = 2 to n = 1 will produce shortest wavelength in (where n = principal quantum state) (A) Li+2 (B) He+ (C) H (D) H+ The empirical formula of a nonelectrolyte is CH2O. A solution containing 3g of the compound exerts the same osmotic pressure as that of 0.05 M glucose solution. The molecular formula of the compound is (A) C2H4O2 (B) CH2O (C) C3H6O3 (D) C4H8O4 The energy of an electron in first Bohr orbit of H atom is 13.6 eV. The possible energy value of electron in the excited state of Li2+ is (A) 122.4 eV (B) 30.6 eV (C) 30.6 eV (D) 13.6 eV The enthalpy of vaporization of benzene is +35.3 kJ/mol at its boiling point of 80C. The entropy change in the transition of vapour to liquid at its boiling point is ______. [in J mol1 K1] (A) +100 (B) 100 (C) 342 (D) +342

Answer: (B)

Answer: (C)

Answer: (C)

Answer: (A)

Answer: (C)

Answer: (A)

Answer: (A)

Answer: (C)

Answer: (B)

1Answer: (C)

The formation of [PtF6] is the basis for the formation of Xenon fluorides. This is because (A) O2 and Xe have comparable sizes (B) both O2 and Xe are gases (C) O2 and Xe have comparable ionisation energies (D) O2 and Xe have comparable electronegativities The formula mass of Mohr's salt is 392. The iron present in it is oxidised by KMnO4 in acid medium. The equivalent mass of Mohr's salt is (A) 392 (B) 31.6 (C) 278 (D) 156 The geometry of electron pairs around I in IF5 is (A) Octahedral (B) Trigonal bipyramidal (C) Square pyramidal (D) Pentagonal planar The half life time of 2g sample of radioactive nuclide 'X' is 15 min. The half life time of 1g sample of X is (A) 7.5 min (B) 15 min (C) 22.5 min (D) 30 min The highest magnetic moment is shown by the transition metal ion with the configuration (A) 3d2 (B) 3d5 (C) 3d7 (D) 3d9 The IUPAC name of

Answer: (A)

Answer: (A)

Answer: (B)

Answer: (B)

Answer: (B)

is (A) but-1-enoic acid (B) but-3-enoic acid (C) prop-2-enoic acid (D) pent-4-enoic acid The IUPAC name of the complex [Co (NH3)4Cl2] Cl is Answer: (A) (A) tetraammine dichloro cobalt (III) chloride (B) dichloro tetraammine cobalt (III) chloride (C) tetraammine dichloro cobalt (IV) chloride (D) tetraammine dichloro cobalt (II) chloride The mass of glucose that should be dissolved in 50 g of water in order to produce the Answer: (B) same lowering of vapour pressure as is produced by dissolving 1 g of urea in the same quantity of water is (A) 1 g (B) 3 g (C) 6 g (D) 18 g The maximum number of possible isomers in 1-bromo-2-methyl cyclobutane is Answer: (B) (A) 2 (B) 4 (C) 16 (D) 8

1The pH of 10 8 M HCI solution is (A) 8 (B) more than 8 (C) between 6 and 7 (D) slightly more than 7 The radii of Na+ and Cl ions are 95 pm and 181 pm respectively. The edge length of NaCl unit cell is (A) 276 pm (B) 138 pm (C) 552 pm (D) 415 pm The reaction C2H5ONa + C2H5I C2H5OC2H5 + NaI is known as (A) Kolbe's synthesis (B) Wurtz's synthesis (C) Williamson's synthesis (D) Grignard's synthesis The rms velocity of hydrogen is times the rms velocity of nitrogen. If T is the temperature of the gas, which of the following is true? (A) (B) (C) (D) The solubility of Ca3(PO4)2 in water is y moles / litre. Its solubility product is (A) 6y4 (B) 36y4 (C) 64y5 (D) 108y5 Answer: (D) =

Answer: (C)

Answer: (C)

Answer: (C)

Answer: (D)