Ashutosh Chemistry

8/18/2019 Ashutosh Chemistry

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Mr. KAMLESH SIR

(Dept. of Chemistry)

me : ASHUTOSH YADAV

ss : XIIth

ll No:


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This is to certify that the project was done by Mr. Vivek Gupta is in partialfulll!ent of "hysics "ractical E#a!inations AISS$E %&'(.

I certify that this project is done by her own e)ort with *uidance of theteacher.

+++++++++ ++++++++ +++++++

E#a!iner,s Si*n. "rincipal Si*n Teachers Si*n-ept. of $he!./

I place !y sincere than0s to !y che!istry teacher Mr. Kamlesh Singh for his*uidance and ad1ices to co!plete !y wor0 successfully. I also than0 our2riends for pro1idin* !e the facilities to nish the project on ti!e.


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I also ta0e this opportunity to place on record !y deep *ratitude to L3RALMI4HT5 for the countless blessin*s showered on !e while doin* the wor0and to co!plete it.

Last but not least I than0 !yparents for their encoura*e!entand support in !y hu!ble1enture. 1 INTRODUCTION …………………………

2 AIM ……………….………………………….

3 MATERIALS REQUIRED………………….

4 PRECEDURE…….…………………………..

5 OBSERVATIONS……………………………

6 BIBLIOGRAPHY……………………………


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I6TR37$TI36

In the past decade there has been a tre!endous increase in the

yields of 1arious crops to !eet the de!and of o1er*rowin*

population8 achie1ed by usin* pesticides and insecticides. These are

che!icals that are sprayed o1er crop to protect it fro! pests. 2or

e#a!ple8 T8 9H$8 :inc phosphide8 Mercuric chloride8 dinitrophenol

etc. All pesticides are poisonous che!icals and are used in s!all

;uantities with care. "esticides are pro1en to be e)ecti1e a*ainst

1ariety of insects8 weeds and fun*i and are respecti1ely calledinsecticides8 herbicides and fun*icides. Most of the pesticides are

non


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These days preference is *i1en to biode*radable insecticides li0e

!alathion. The presence ofInsecticides residues in e1en raw sa!ples

of wheat8 sh8 !eat 8 butter etc.ha1e aroused the concern of

a*ricultural ad!inistrators8 scientists and health o=cials all o1er the

world to put a chec0 o1er the use of insecticides and to search fornon insecticidal !eans of pest control.

AIMTo study the presence of insecticides or pesticides -nitro*encontainin*/ in 1arious fruits and 1e*etables.

MATERIALS REQUIRED

Mortar and pestle 8 bea0ers8 funnel 8 *lass rod 8 lter paper china dis8 water bath8 tripod stand8 fusion tube8 0nife8 test tube.

Sa!ples of 1arious fruits and 1e*etables8 alcohol8 sodiu! !etal8ferric chloride8 ferrous sulphate crystals8 distilled water and dil.Sulphuric acid.

PROCEDURETa0e di)erent types of fruits and 1e*etables and cut the! into s!allpieces separately. Transfer the cut pieces of 1arious fruits and1e*etables into it separately and crush the! . Ta0e di)erent 0indsfor each 0ind of fruits and 1e*etables and place the crushed fruitsand 1e*etables in these bea0ers and add '&& !l of alcohol to each othese . Stir well and lter. $ollect the ltrate in separate china dishesE1aporate the alcohol by heatin* the china dishes one by one o1er awater bath and let the residue dry in the o1en . Heat a s!all piece osodiu! in a fusion tube 8 till it !elts. Then add one of the abo1eresidues fro! the china dish to this fusion tube and heat it till redhot. rop the hot fusion tube in a china dish containin* about '& !lof distilled water. 9rea0 the tube and boil the contents of the chinadish for about > !inutes . $ool and lter the solution. $ollect theltrate . To the ltrate add ' !l of freshly prepared ferrous sulphatesolution and war! the contents. Then add %


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solution and acidify with dilute H$l. If a blue or *reen ppt. orcolouration is obtained it indicates the presence of nitro*encontainin* insecticides. Repeat the test of nitro*en for residuesobtained fro! other fruits and 1e*etables and record theobser1ation.

OBSERVATIONS

S.no 6a!e of thefruit or

1e*etable

Test for the presence3f nitro*en

-positi1e orne*ati1e/

"resence ofinsecticide3r pesticide residues

'. Apple positi1e yes

%. 4rapes positi1e yes

?. 9rinjal positi1e yes

@. To!ato positi1e yes


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9I9LI34RA"H5

Modern,s abc of practical che!istry

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Ashutosh Chemistry