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Chapter 1- RESPIRATION

1. Which of the following is true about the breathing mechanism?A. Exhalation involves the contraction of the trachea.

B. Inhalation involves an increase in the air pressure in the lungs.

C. Exhalation involves an increase in the air pressure in the lungs.D. Inhalation involves the relation of the diaphragm

Answer : CIncrease the air pressure, decrease the volume of the thoracic cavity.

2. During inhalation, the rib cage

A. is loweredB. is raised

C. does not move

D. is raised and then returns to its original position.

Answer : B

The rib cage moves upwards and outwards.

3. Which of the following is true regarding the volume and air pressure of the thoracic

cavity during exhalation?

Volume Air pressure

A. Increases Low

B. Decreases High

C. Decreases Low

D. Increases High

Answer : BIncrease the air pressure, decrease the volume of the thoracic cavity.

4. Which of the following action will cause air to be sucked into the lung?I. Diaphragm

II. Rib Cage

III. Trachea

A. I, II only

B. I, III onlyC. II, III onlyD. I, II, III

Answer : ARib cage move upwards and outwards, diaphragm contracts and moves downwards

5. Which of the following action will cause air to be sucked into the lungs?

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I. The external intercostals muscle contracts.

II. The rib cage expands upwards and outwards.

III. The diaphragm contracts and becomes flatten.

A. I, II only

B. I, III onlyC. II, III only

D. I, II, II

Answer : A

External intercostals muscle and diaphragm contracts, rib cage move upwards and

outwards.

6. In the cell respiration, state the end products.

A. Gas carbon dioxide

B. Gas oxygen

C. Gas hydrogenD. Gas nitrogen

Answer : A

During exhalation, carbon dioxide diffuses from blood capillaries into the alveoli.

7. The haemoglobin combines with oxygen, it becomes..

A. haemoglobin

B. White blood cells

C. PlasmaD. Oxyhaemoglobin

Answer : DThe oxygen combines easily with the haemoglobin in the red blood cells, it becomes

oxyhaemoglobin.

8. The following are the step that can be taken to help improve the quality of air except.

A. Avoid open burning

B. Use public transport

C. SmokingD. Wear a mask when there is haze.

Answer : CNicotine and tar are found in cigarette smoke. Nicotine is a toxic drug that can cause

us to get addicted to smoking.

9. What are the examples of diseases that effect the respiratory organ.

I. Bronchitis

II. Asthma

III. Lung cancer

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A. I, II only

B. I onlyC. II,II only

D. I, II, III

Answer : D

Bronchitis, asthma and lung cancer are the examples of diseases the respiratory organ.

10. Why does a girl loses more heat than a woman?

A. The girl has a higher rate of cell respiration.

B. The girl eats more

C. The girl has smaller body size than the woman.D. The girl needs more hours for sleep.

Answer : A

The girl has a higher rate of cell respiration.

11.

What happens to the structure X when we inhale?

A. become flat

B. curves shapeC. move upwards

D. move inwards

Answer :

X is the diaphragm. When we inhale the rib cage moves upwards and outwards. Atthe same time, the diaphragm contract and flatten.

12. What is the structure of the lung?I. Bronchus

II. Alveoli

III. BronchiolesA. I only

B. I, II

C. I, II, III

Answer : C

X

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The lung consists of the bronchus, bronchioles and alveoli.

13.

What is the name the organ label Y in the diagram?

A. Nasal cavity

B. Diaphragm

C. TracheaD. Bronchus

Answer : CY is the trachea. Its filters the air that flows into the lung.

14. Our breathing process involves inhalation and exhalation. Which of the followingstatements is true?

A. When the diaphragm contracts and flattens, the thoracic volume increases.

B. During inhalation, the air pressure in the thoracic cavity increases.

C. When the air pressure in the thoracic cavity drops below atmosphericpressure, air is forced out of the lungs.

D. When we inhale, we force air in and out of our lungs.

Answer : C

During inhalation, the diaphragm contracts and flattens. As the result the thoracic

volume increases and air enters the lung.

15. P bronchiole

Q alveolus

R bronchusS trachea

T nasal cavity

How does air flow through the respiratory system?A. T S R P Q

B. S R P T Q

C. T S Q P RD. P Q R S T

Answer : A

Air is inhaled through the nose and taken through the trachea, bronchus, bronchiole

Y

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and finally to the alveolus.

16. Which of the following are harmful to our respiratory system?I. Oxygen in the air

II. Dust and particles from haze.

III. Tar from cigarette smoke.

A. II, only

B. I, II

C. I, IIID. II, III

Answer : DTar from cigarette smoking block transfer a good oxygen to our blood stream. Dust

and particles from the haze clogs in our lungs.

17. This part of the alveolus helps to diffuse oxygen through the alveolar membrane.It is the ..

1A. Thin moisture film

2B. .Haemoglobin3C. Capillaries

4D. Cell wall

5

Answer : DThe wall of the alveolus and the wall of the blood capillary are only one cell thick.

This enables diffusion to take place efficiency.

18. Which of the following statements is FALSE?A. Alveolar wall is one cell thick

B. Alveoli is surrounded by a large network of blood capillaries

C. Alveoli can absorb oxygen into bloodD. Alveoli is covered with thick mucus to help in gas diffusion

Answer : DThe alveoli are surrounded with large number of blood capillaries and the walls are

always moist.

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Chapter 2 BLOOD CIRCULATION AND TRANSPORT

19. The pulmonary vein differs from the pulmonary artery because it

A. Carries deoxygenated blood

B. Has thick muscular wallsC. Has a small lumen

D. Carries oxygenated blood

Answer : D

The pulmonary vein has a big lumen, has a thin muscular walls and carries blood

under low pressure.

20. Which of the following statements is true about the blood that flows in the artery

from the heart to brain?

A. Blood is dark red in color

B. Blood contains a lot of oxygen.C. This blood flows slowly

D. This blood flows under low pressure

Answer : B

The artery carries oxygenated blood that contains a lot of oxygen.

21. A person with blood group A can donate his blood to someone who has blood group

A. B and OB. B only

C. A and AB

D. O only

Answer : C

Blood group Can give blood to Can receive blood from

A A and AB A and O

B B and AB B and O

AB AB A, B, AB and O

O A, B, AB, O O

22. The wall of the left ventricle is thicker than that of the right ventricle because

A. More blood is contained in the left auricle and the left ventricleB. Stronger pressure is needed to pump blood to the whole body

C. The pulmonary vein carries blood rich in oxygen and dissolved food

D. Stronger pressure is needed to receive blood from the body.

Answer : B

The stronger pressure is needed by the left ventricle to pump blood to the whole body.

The right ventricle only has to pump blood to the lungs.

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23. In the human blood , oxygen is transported by

A. being dissolved in the plasmaB. the red blood cells

C. the white blood cells

D. the platelets

Answer : B

The red blood cells transport oxygen to the cells of the body.

24. The information below is the description of a structure in the human transport system.

has a valve

has a big lumen

Thin and not elastic muscular wall

A. an artery

B. a vein

C. the heartD. a capillary

Answer : BVein have valves to ensure one-way flow of blood. Veins return blood to the heart.

25. What are the end products of transpiration?I. Oxygen

II. Carbon dioxide

III. WaterA. I only

B. II and IIIC. I and III

D. I, II, III

Answer : C

Carbon dioxide needed for photosynthesis. Photosynthesis in plants eliminatesoxygen and water vapour.

26. The information below is the description of a structure in plant.The structure described is

A. xylemB. phloem

C. stoma

D. root

Answer : A

Xylem is the special tubes in the root, stems and leaves that transport water and

minerals from roots to the stems and leaves.

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27. What are the materials transported by the phloem?

I. Water II. Glucose

III. Mineral salts

A. II only

B. I and III

C. II and IIID. I, II, III

Answer : A

Phloem transports glucose made by the leaves during photosynthesis to other parts ofthe plants.

28. Which of the following the factors affecting the rate of transpiration.

I. LightII. Temperature

III. Humidity

A. I only

B. I and IIC. II and III

D. I, II, III

Answer : DThe factors affecting the rate of transpiration are light, temperature , humidity and

wind.

29.

The information above is about a blood cell, Y.

What is Y?

A. Platelet

B. Red blood cellC. White blood cell

D. Plasma

Answer : A

Red blood cells have a biconcave shape. White blood cells have a nucleus. Red blood

cells, white blood cells and platelets float in plasma.

- Has no nucleus

- has no definite shape- Produced in the bone marrow

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30. The functions of the red blood cells include all of the following exceptA. clotting of blood.

B. transport of carbon dioxide.C. transport of digested food.

D. distribution of heat.

Answer : A

Clotting blood is the function of platelets.

31. Which of the following blood vessels carry deoxygenated blood?

I. vena cava

II. aorta

III. pulmonary artery.

A. I only

B. I, II

C. I, IIID. II, III.

Answer : C

The aorta carried oxygenated blood to every part of the body.

32. Deoxygenated blood returns to the lungs via the

A. vena cava

B. aorta

C. pulmonary veinD. pulmonary artery.

Answer : DThe pulmonary artery carried deoxygenated blood from the heart to the lungs.

33. The valve which separated the left atrium from the left ventricle is theA. semi-lunar valve

B. pocket valve

C. tricuspid valve

D. bicuspid valve

Answer : D

Bicuspid valve prevents blood in the left ventricle from flowing back to the leftatrium.

34. Which of the following is responsible in pumping the oxygenated blood to allparts of the body?

1A. Blood capillaries

2B. Alveoli

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3C. Heart

4D. Cell

Answer : C

Heart pumps oxygenated blood to all parts of the body.

35. Which of these statements is FALSE?

1A. Haemoglobin combines with carbon dioxide to form oxyhaemoglobin

2B. Red blood cells contain a red pigment called haemoglobin3C. The heart pumps blood around the body

4D. Oxygen is diffused to the blood through the thin alveolar wall

Answer : AHaemoglobin combines with oxygen to form oxyhaemoglobin.

36. Which of the following substances is released mainly from air-conditioning systems

and refrigerators?1A. Carbon

2B. Chlorofluorocarbon3C. Sulphur monoxide

4D. Carbon monoxide

Answer : B

When released in the air, chlorofluorocarbon(CFC) can deplete our ozone layer.

37. What is transpiration?

A. The absorption of minerals on the surface of fruits

B. The evaporation of water on the surface of leaves.C. The evaporation of water on the surface of roots.

D. The absorption of water on the surface of leaves.

Answer : BTranspiration is the evaporation of water from the surface of leaves.

38. Which is not true about stomata?A. Stoma is singular word for stomata.

B. Stomata have guards cells that control the size of the opening of the stomata.

C. Stoma are mostly found on the top surface of leaves.

D. Stomata are involved in photosynthesis and transpiration.

Answer : CAll statements are true except statement C. The re are most stomata found underneath

the leaves.

39. Which statement about the process of transpiration is false?

A. Transpiration allows evaporation of excess water in plants.

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B. Transpiration cools plants on hot days.

C. During transpiration, stomata allow carbon dioxide from photosynthesis to

released from the leaves.D. Transpiration helps root to absorb water and minerals from the soil.

Answer : CDuring transpiration, stomata allow carbon dioxide from photosynthesis to released

from the leaves not oxygen.

40. Which of the statement about factors that effect transpiration is false?

A. The rate of transpiration is slower in still air.

B. The rate of transpiration is higher in dry weather.C. The higher humidity, the higher the rate of transpiration.

D. The lower the humidity, the higher the rate of transpiration.

E.

Answer : C

Higher humidity means more moisture in the air. The decreases transpiration.

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Chapter 3 - EXCRETION

41. How is carbon dioxide eliminated from the body?A. Together with urine

B. Through the large intestine

C. Through exhalationD. Through sweat pores

Answer : CCarbon dioxide in the blood capillaries diffuses into the alveolus and is eliminated

from the lungs when exhaling.

42. Which of the following excretory organs eliminates urea?I. Lungs

II. Kidneys

III. Skin

A. I only

B. I, IIC. II,III

D. I, II, III

Answer : C

Urea eliminated from the skin and kidneys.

43. Which of the following concerning the kidneys is incorrect?A. The kidneys is an excretory organ

B. The kidneys is eliminated water in the form of urine.

C. The kidneys excrete water, urea and excess mineral salts.D. The kidneys excretes waste products in the form of sweat.

Answer : DThe skin excretes waste products in the form sweat.

44. The excretion of excess mineral salt helps to

A. Regulating the blood concentrationB. control our body temperature

C. maintain our body salt content

D. control the acidity of our body

Answer : C

A- Function of the kidneyB- water

D- carbon dioxide

45. J urethra

K Ureters

L Urinary bladderM - Kidneys

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J, K, L and N are the parts of the urinary system.

Which of the following shows the correct sequence for the parts that are involved inthe production and the excretion of urine?

A. J K L MB. K J L M

C. L M J K

D. M K L J

Answer : D

Kidneys filter waste products

Ureters enable urine to flow from the kidneys to urinary bladder

Urinary bladder a sac that stores urine before is it excreted from the body.Urethra a tube that enables urine to flow out of the body.

46. How does a dialysis machine help a kidney failure patient to stay alive?

A. By adding mineral salts to the blood

B. By removing carbon dioxide from the bloodC. By adding nutrients to the blood

D. By removing urea from the blood.

Answer : DA dialysis machine is like an artificial kidney that remove urea, excess mineral salts

and water.

47. Which part of the kidneys that collect urine?

A. Medulla

B. PelvisC. Cortex

D. Ureters

Answer : BThe pelvis is the part of the kidney that collect urine.

48. Excretory products by plants can be found in theI. bark

II. stem

III. fruit

A. I only

B. I, II only

C. II, III only

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D. I, II, III

Answer : DExcretory products of plants gather on the leaves, bark, flowers, stems, fruits etc. to

be eliminated.

49. What will happen if an excessive amount of urea accumulates in the blood?

A. The blood pressure will decrease.

B. The blood will be poisonedC. The water content in the blood will decrease

D. The blood concentration will increase

Answer : BIf the kidneys do not function properly, toxic substances in the blood will accumulate

and this will lead death.

50. Which of the following excretory products of plants is used in vehicle tyres?A. Acid

B. ResinC. Latex

D. Quinine

Answer : C

Latex are source from rubber tree, that make vehicle tyres.

51. Which of the following the correct functions of the kidneys?I. Excrete excess salt

II. Maintain pH balance of the blood

III. Maintain water balance in the bodyIV. Excrete carbon dioxide

A. IV

B. I, IIC. II, III

D. I, II, III

Answer : D

Carbon dioxide is eliminated from the lungs.

52. Which of the following is the importance of healthy kidneys?

A. Healthy kidneys help to excrete carbon dioxide that is poisonous to ourbody

B. Kidneys help to transport blood around the body

C. Kidneys help to filter oxygen in our bodyD. Kidneys help to filter out urea, excess water and salt from our body

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Answer : D

The kidneys excrete water, urea and excess mineral salts.

53. Cleaned blood exits the kidneys through which blood vessel?

A. Aorta

B. Renal VeinC. Renal Artery

D. Pulmonary Vein

Answer :B

The renal vein transports deoxygenated blood away from the kidneys.

54. Which of the following is found in the urine of a normal healthy person?I. Urea

II. Glucose

III. Amino Acids

A. I only

B. I, III onlyC. II, III only

D. I, II, III

Answer : A

Under normal conditions, substances like protein (amino acids) and glucose are not

found in the urine. If glucose is found in the urine, it is most likely that the person has

diabetes.

55. Which of the following are excretory products of plants?

A. Resin, opium, glucose

B. Resin, opium, quinineC. Opium, quinine, glucose

D. Resin, opium, quinine, glucose

Answer : B

The excretory products of plants are resin, opium and quinine.

56. Which of the following is correct?

Excretory product Part of the plant

A. Caffeine stem

B. Latex Bean

C. Nicotine Flower

D. Quinine Bark

Answer : DQuinine is produced from the bark of a cinchona tree and is considered as an

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excretory product of plants.

57. Which of the following is NOT part of the Urinary System?I. Kidney

II. Bladder

III. LiverIV. Ureter

A. I, II, III, IVB. I, II, III only

C. III only

D. IV only

Answer : C

Liver is not part of the Urinary System.

58. Where is the kidney located in the body?A. Behind the intestines, in front of the spine

B. Chest area, within the rib cageC. Upper chest, slightly to the left

D. Connected to the spine within the skull

Answer : A

The kidney located behind the intestines, in front of the spine.

59. Which statement is TRUE?A. Urine is collected at the cortex

B. Cortex protects the kidney

C. Medulla absorbs and recycles useful substances and nutrients back intothe blood vessels

D. Renal pelvis has a thin film of membrane

Answer : C

Medulla filters and recycles useful substances and nutrients back into the blood

vessels.

60. Which of the following processes in plants produces excretory products?

A. Respiration

B. TranspirationC. Absorption of water from the ground

D. Wilting

Answer : A

Respiration in plants eliminates carbon dioxide and water.

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Chapter 4 - REPRODUCTION

61. Which of the following animals practices external fertilization?A. Frog

B. Cow

C. BirdD. Cat

Answer : AFrogs discharging their sperms and eggs into the water.

62. Which of the following is not true about sterility in male?

A. Sperm s that die too early.B. Sperm that do not mature and cannot fertilize the ovum

C. Damage to the testes or sperm duct.

D. Inability of embryo to implant itself to the uterus wall.

Answer : D

Sterility in a female may caused by inability of embryo to implant itself to the uteruswall.

63. The female gamete of a flower is produced by theA. ovary

B. petal

C. Anther

D. Filament

Answer : A

The ovary is the female reproductive organ of a flower.

64. What is the function of the cotyledon?

A. Store food for use during germination.B. The part that will develop in to a shoot.

C. The part that will become a root.

D. Will develop into a seedling during germination.

Answer : A

The cotyledon is the part of the seed that stores food. Cotyledon contains starch.

65. The human embryo is enclosed by a membrane that contains a fluid. What is the

function of the fluid?

A. To supply oxygen to the embryo.B. To supply food to the embryo.

C. To protect the embryo from bacterial infection.

D. To prevent the embryo from shock and injury.

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Answer : D

The fluid protects the embryo from shock and injury.

66. What is produced in the testes?

A. Sperm

B. EggC. Oxyhaemoglobin

D. Enzymes

Answer : A

The function of the testes is to produce the male gametes or sperms.

67. Changes during puberty in males are caused byA. enzymes

B. sex cells

C. sex hormones

D. nutrients

Answer : CAt puberty, the testes begin to produce chemicals known as male sex hormones.

68. The monthly discharge of blood from the uterus via the vagina in females is called

A. Fertilisation

B. Menstruation

C. CultivationD. Ovulation

Answer : BMenstruation is the bleeding or blood discharge through the cervix and vagina of the

female.

69. Which of the following is required for seeds to germinate?

I. Heat

II. Oxygen

III. Water

A. I only

B. I and IIC. II and III

D. I, II, III

Answer : D

Conditions required for germination are the presence of water, heat (suitable

temperature) and oxygen.

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70. What is the disadvantages of vegetative reproduction?

A. Does not need the help of pollination agents

B. The young plant grow faster.C. The young plant has the same characteristics as the parent plant.

D. Undersirable characteristics are passed on form the parent plant to the young

plant.

Answer : D

Vegetative reproduction is a type of asexual reproduction that produces a new plantsfrom the parent plants such as the roots, stems or leaves.

71. The main female reproductive organs include the

I. sperm ductII. fallopian tube

III. Cervix

A. I onlyB. I, II

C. II, IIID. I,II, II

Answer : CSperm duct is the male reproduction system.

72. Which of the following is true about the sperm?

A. The sperm is the biggest cell in the male body.B. Sperm are produced by the ovary.

C. Each sperm has a tail but no head.

D. A sperm is the male gamete.

Answer : A

The function of the testes is to produce the male gametes or sperms.

73. Which of the following is true about the function of the stigma?

A. It contains the male gametes of a flower.

B. It attract insects to carry out pollination.C. Its hold and supports the anther.

D. Its receives the pollen grains.

Answer : D

A is the function of Anther.

B is the function of petalC is the function of filament.

74. * A long canal that support the stigma

* It connects the stigma to the ovary.

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Which of the following is the part of the flower describe above?

A. ReceptacleB. Stamen

C. Style

D. Filament

Answer : C

Receptacle holds and support the flower.Stamen consists of the anther and filament.

Filament holds and support the anther.

75. What is the following is correctly paired?

Sex Organ Function

I Vagina Receives sperms from the

penis

II Uterus Accommodates andprotects the embryo

III Ovary Produces ovum

A. I onlyB. I, II

C. I, III

D. I, II, IIIAnswer : D

All the following is correctly paired. The following is about female reproductive

organ.

76. Which of the following is true about cross-pollination?

I. only one parent is involved.II. involves two flowers of different species.

III. Involves two flowers from different plants of the same species.

A. I onlyB. I, II

C. II, III

D. I, III

Answer : CSelf pollination involves only one parent.

77. The flowers of lalang are pollinated by

A. wind

B. air C. water

D. animal

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Answer : A

The flower of lalang are small and dull coloured.

78.

The figure above shows the human female reproductive system.

Which of the parts labeled P,Q, R and S produces the female gametes?

A. PB. Q

C. RD. S

Answer : QThe female gametes are produced by the ovary.

79.

Which of the following parts is correctly paired to its function?

Answer : BThe part is stamen.

80.

Q

R

S

P

X

Y

Z

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The pictures show the method of vegetative reproduction in plants X, Y and Z.

Answer : B

Bryophyllum reproduces vegetatively by using its leaves.

X Y Z

A. Leaf Root Stem

B. Leaf Stem Tuber

C. Leaf Stem Root

D. Leaf Stem Flower

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Chapter 5 - GROWTH

81. The following is true about a process of changes during growth in human exceptA. Size

B. Cell functionC. Appearance

D. Religion

Answer : D

Growth is a process of changes in size, appearance, and cell function in a human.

82. Females and males usually have similar, rapid growth rates duringA. infants

B. old age

C. adolescence

D. adulthood

Answer : AAt the infant stage the growth rate in males and females is the same as that in females.

83. The following explains why the children needs a balanced diet. Which is not true?To form red blood cells.

To maintain a healthy body.

To build strong bones.

To maintain hormone balance.

Answer : B

An adult needs a balanced diet to maintain a healthy body.

84. Zygote embryo foetus baby X adolescent Y

Which of the following statements is true about stages X and Y shown above?

A. Puberty is reached at stage X.

B. Secondary sexual characteristics begin to develop at stage Y

C. The growth rate in the male is faster than female at stage XD. The female will be taller than male at the stage Y

Answer : CX : At child stage

Y : At adult stage.

The growth rate in a male child is faster than that in a female child.

85. Which of the following is required by children to build new tissues in the body.

A. Protein

B. Iron

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C. Calcium

D. Carbohydrates

Answer : A

Proteins are needed for build new tissues in the body for children.

86. How can we minimize the risk of getting osteoporosis at old age?

A. Avoid vigorous exercise.

B. Have enough rest.C. Take in more calcium

D. Take in more carbohydrate

Answer : CCalcium needed for the formation of strong bones.

87. Which of the following correctly matched?

Answer : D

Iron is needed formation of red blood cells. Lack of iron causes anaemia.

88. At which of the following stages is the growth rate of a female faster than of a male?

A. ChildhoodB. Old ageC. Infancy

D. Adolescence

Answer : DDuring the early stage of adolescence, female grow faster than male because a they

reach puberty earlier.

89. Why the carbohydrates and fat are very importance for children?

A. Builds new tissues in the body.

B. Form strong bones and teeth.C. Supply more energy because children are very active.

D. Build bodys defence against infectious diseases.

Answer : CCarbohydrates are needed for supply more energy.

90. Which of the following statements is true?

Dificiency ofnutrient Causes

A. Protein rickets

B. Iron Kwashiorkor

C. Vitamin D Anaemia

D. Iron Anaemia

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A. At about the age of 14, boys will grow more rapidly than girls.

B. Boys will reach puberty at an earlier age than girls.

C. At the end of rapid growth, girls are normally heavier than boy.D. During late adolescence, female grow faster than male.

Answer : ABoy reach puberty at about the age of 14.

91. Which of the following statements is true?Circle the correct answer.

A. From age 2 to 6, the growth rate is the same for both males

and females.B.4 year-old girl is taller than a boy of the same age.

C.An 8 year-old boy is shorter than a girl of the same age.

D.14 year-old boy is shorter than a girl of the same age.

Answer : 14

92.

From this graph, it can be concluded that

A. maximum growth rate occurs when the person has reached old age.

B. Infants have the biggest size of the headC. Adolescents show the highest rate of growth.D. Children grow faster than infants

Answer : CAt adolescent stage, the growth rate in females is faster than that in males.

93. What causes kwashiorkor in children?

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A Lack of carbohydrate and fats

B Lack of vitamins and mineralsC Lack of iron

D Lack of proteins

Answer : D

Protein are needed for growth and repair of cells. Deficiency of protein in children

causes kwashiorkor.

94. Which of the following will not harm the growth of a healthy child?

I . Not drinking milk

II. Eating a lot of fruitsIII . Eating a lot of rice

A. I, II and III

B. I and II onlyC. II and III only

D. I only

Answer : C

Eating a lot of fruits and rice are will not harm the growth of a healthy child.

95. Which of the following shows the correct sequence of growth pattern after birth?

A. Infancy, Childhood, Adolescence, Adulthood, Old age

B. Adulthood, Infancy, Adolescence, Old age, ChildhoodC. Infancy, Adulthood, Childhood, Adolescence, Old age

D. Adulthood, Infancy, Old age, Adolescence, Childhood

Answer :A

A is the best answer.

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Chapter 6 LAND AND ITS RESOURCES

96. Metals react with oxygen to form..

A. metal sulphides

B. metal oxidesC. metal carbonates

D. carbon dioxide

Answer : B

Metal + oxygen metal oxide

97. Which of the following statements is true about the reactions between metals and nonmetals?

A. Metal react with oxygen to form metal carbonates.

B. All metals react with non-metals at the same rate.

C. Metals do not react with sulphur .D. Zinc reacts with sulphur to form zink sulphide.

Answer : D

zink + sulphur zink sulphide

98. Which of the following is the uses of limestone.

I. make quicklime

II. make glass

III. eliminate impurities during the extraction process of metal ore.

A. I only

B. I, IIC. II,III

D. I, II, III

Answer : D

All the statement is the uses of limestone.

99. Which of the following takes place during the fractional distillation of petroleum?I. The petroleum vapour rises in the distillation tower.

II. Different fractions condense at different heights in the distillation tower.

III The fraction with the lowest boiling point will condense at the bottom of thedistillation tower.

A. I, IIB. II, III

C. I, III

D. I, II, III

heat

heat

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Answer : B

The vapour is allowed to rise in the distillation tower.

100. Which of the following is the contribution of the petroleum and natural gas industry

to the economic development of our country?

I. providing job opportunities.II. source of revenue to the country.

III. the expansion of various other industries.

A. II only

B. II, III

C. I, II

D. I, II, III

Answer : D

All the statement is the contribution of the petroleum and natural gas industry to our

country.

101. Which of the following is used to make plastic.A. Bitumen

B. Kerosene

C. NaphthaD. Diesel

Answer : C

Bitumen is used to surface roads. Kerosene is used for aircraft fuel. Diesel is used asfuel for heavy vehicles.

102. Which of the following are arranged in ascending order of boiling points?A. Petrol naphtha kerosene Diesel Bitumen

B. Diesel kerosene bitumen petrol diesel

C. kerosene petrol bitumen diesel naphthaE. Bitumen diesel kerosene naphtha

Answer : A

The higher the boiling point of a petroleum fraction,- the darker is its colour

- more difficult I is to burn

- the higher is its viscosity.

103. What is the property of zinc oxide?

A. Not soluble in water.B. Soft.

C. Easily decomposed by heat.

D. Easily combines with other compounds.

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Answer : A

Metals are not soluble in water.

104. Which of the following is an elements?

A. Oxide

B. CarbonateC. Gold

D. Silicate

Answer : C

Gold are natural mineral can exist freely in the earth crust without combining with

other elements.

105. Calcium carbonate calcium oxide + X

What is represented by X ?

A. HydrogenB. Oxygen

C. Carbon dioxideD. Nitrogen

Answer : CWhen calcium carbonate is heated strongly , it will decompose into calcium oxide

and carbon dioxide.

106. Which of the following is a compound?A. Platinum

B. Hematite

C. MercuryD. Carbon

Answer : BHematite is a compound because its combine with other elements.

107. When a mixture of iron and sulphur is heated, a black solid is formed. What is the

black solid?

A. Iron oxideB. Iron sulphide

C. Iron sulphate

D. Iron dioxide

Answer : B

Iron react with sulphur to form iron sulphide.

zink + sulphur zink sulphide

Heated

heat

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108. Which of the following are non-metals?

I. Zinc

II. BromineIII. Graphite

IV. Magnesium

A. I, II, III only

B. I, III only

C. II, III onlyD. II, III, IV only

Answer : C

Zinc and magnesium are metal

109. Which of these statements is false?

A. Silicon exists in the form of compoundsB. Sand is an example of silica

C. Silica contains silicon and oxygen

D. Silicate contains silicon and oxygen

Answer : DSilicate is a silicon compound that contains silicon, metal and oxygen elements.

110. Which of the following statements is true about calcium carbonate?

A. It reacts with dilute acids to release carbon dioxideB. It breaks down to calcium dioxide when heated

C. It releases oxygen when heated

D. It dissolves in water

Answer : ACalcium carbonate breaks down to form calcium oxide and carbon dioxide when

heated.

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Chapter 7 - ELECTRICITY

111. What is electric current?

A. The energy needed to move electrical charges in a conductor.B. Energy obtained from fossil fuels.

C. A natural phenomenon caused by static electrical charges.

D. The flow of electrons in a conductor.

Answer : D

Electric current is the flow of electrical charges(electrons) in one direction.

112. The diagram shows a parallel circuit.

What is the reading of the ammeter if the value of each resistance is 2 ohms?

A. 0.5A

B. 2.0AC. 4.5A

D. 9.0A

Answer : B

R = V

I

113. Which of the following is an advantages of a series circuit?

I. Each component receives the same current.

II. Each component receives the same voltage as provided by the power supply.III. The failure of a component will not affect the operation of the components at

other branches.

A. I only

B. I, II

C. II, IID. I, II, III

Answer : A

Current in all parts of the circuit is the same. This causes the bulbs to light up with

3V A

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the same brightness. II and III is an advantages of a parallel circuit.

114. Which of the following is the unit for resistance?

A. OhmB. Volt

C. AmpereD. Ammeter

Answer : A

The resistance is measured in the unit of ohm.The unit of measurement for voltage is volt (V)

The unit of measurement for current is ampere (A)

115. The resistors with resistance 2 ohm, 3ohm and 6 ohm are connected in parallel in acircuit. What is the effective resistance in the circuit?

A. 1 ohm

B. 5 ohmC. 7 ohm

D. 6 ohm

Answer : A

1

R

116. Each of the following uses electric energy to operate except

A. Computer

B. RadioC. Solar heaterD. Television

Answer : CSolar heated need sun to operate.

117. What is the condition for Ohms low?

A. Current to be constantB. Resistance to be constant

C. Temperature to be constant

D. Voltage to be constant

Answer : C

When the voltage of an electric source increases, the electric current that flows

through the circuit will also increase.

118. The poles of an electromagnet depends on

A. the strength of the current

=1

R1+

1

R21R3

+

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B. the type of conductor

C. the direction of the current

D. the type of electric source

Answer : C

The types of pole in an electromagnet depends on the direction of the electric currentthat flows through it.

119. Which of the following is true about static electrical charges?I. Like charges repel each other.

II. Only negative charges can move

III. Only positive charges can move.

A. I only

B. I, II only

C. II, III only

D. I, II, III

Answer : BLike charges repel, unlike charges attract. The negative charges are electrons which

are free to move from one object to another.

120. A metal chain that touches the road is fixed to a lot lorry so that

A. excess heat can be conducted through the chain to the earth.B. charges are carried by the chain to the earth.

C. charges from the earth can neutralize the charges on the lorry.

D. the pressure in the types can be balanced.

Answer : B

Prevent sparks from being produced that may cause a fire.

121. Electromagnets are used in devices such as _____

I. powered windowsII. CD players

III. microphones

IV. automatic doors

A. I only

B. I, IIIC. II, III, IVD. I, II, III and IV

Answer : DAll statement use the electromagnets.

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122.

A circuit is connected as shown. The switch is closed. Bar X is brought near to the

iron bar. It is found that the iron bar and Bar X repelled each other. What is Bar X?

A. A plastic barB. A magnet

C. An iron bar

D. A copper bar

Answer : B

A magnet has a magnetic field around it that gives the magnetic effect.

123. Electric current is measured using

A. a voltmeterB. an ammeter

C. an ohmmeterD. a joulemeter

Answer : BElectric current can be measured with an ammeter. The unit of measurement for

current is ampere (A).

124. When two resistors are connected in parallel,

A. both the voltage and the current for the two resistors will be the same.

B. the voltage across the two resistors will be the same.C. the voltage of the two resistors will be the same only if the value of the two

resistances is the same.

D. the current across the two resistors will be the same.

Answer : B

When two resistors are connected in parallel, the voltage across the two resistors willbe the same.

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Chapter 8 GENERATION OF ELECTRICITY

125. What is the function of the blue wire in the wiring system if a 3-pin plug?

A. Breaks the circuit if a short circuit occurs

B. For current to be brought to appliances from the power station.C. For leaked current to flow from an electrical appliance to the earth.

D. Send current back to the source from the appliance.

Answer : D

The neutral wire (blue) carries current from electrical appliances back to the

substation.

126. The following information is about a type of power station.

Using river water from a dam to generate electrical energy.

A. hydroelectric power station

B. diesel engine power station

C. thermal power stationD. nuclear power station

Answer : AWater flowing at high speed and pressure from the dam forces the turbines to rotate

the generator to produce electrical energy.

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127. Which of the following activities can help to conserve electrical energy?

A. Ironing all clothes at once

B. Cooking all food at once

C. Switching on all lights at homeD. Opening the refrigerator door.

Answer : AIroning all cloths at once that ways to conserve electricity.

128. What does a main switch control?

A. Voltage in current

B. Current in a plugC. Electric current flowing to a house

D. Resistance in a socket

Answer : C

Mains switch are controls the electrical supply to all circuits in a home.

129. What is function of fuse?

A. To enable electrical current to flow through an appliance.B. To enable current to flow back to its supply source.

C. To prevent excessive current from flowing through it.

D. To enable leaked current to flow to the earth.

Answer : C

When a bigger current flows through a fuse, the wire in it becomes hot and melt. Itthen breaks off and the current flow through the circuit or electrical appliance is

stopped.

130. An rice cooker has 1 kW power and uses 250 V voltage. What is the electric currentwhich flows through that kettle?

A. 1.0 A

B. 2.5 AC. 4.0 A

D. 5.0 A

Answer : C

Power (W) = voltage (V) X current (A)

131. An electrical appliance has a marking of 150 W and is supplied with 250 V voltage.

Calculate the electric current that flows through the appliance.

A. 0.6 A

B. 0.7 AC. 0.8 A

D. 1.0 A

Answer : A

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Current = Power

voltage

132. An electrical appliance of 1 kW (1000 W) power is used for 5 hours. Calculate theelectrical energy used.

A. 3 kWh

B. 4 kWhC. 5 kWh

D. 6 kWh

Answer :C

Electrical energy = power (kW) x time (h)

133. The safety devices installed in home electrical wiring include

I. switch

II. electric wire

III. earth wire

A. II only

B. 1, IIIC. II, III

D. I, II, III

Answer : B

Switch controls the electrical supply to all circuits in a home.

Earth wire carries leaked current to the earth.

134. Alternating current is used in the transmission through cables because

A. it is easier to stop its flow at any time

B. its voltage can be easily raised or lowered by a transformer

C. it produces lees heat during transmission through cables.D. It can be transmitted over long distances without resistance.

Answer : BThe electric current produced in power stations is alternating current that can be raised

or lowered by using a transformer.

135. Which of the following is not a part of the structure of a transformer?

A. Voltmeter

B. Primary coilC. Secondary coil

D. Iron core.

Answer : A

Voltage can be measured with a voltmeter.

136. The value of the mains voltage in a house is

A. 11 KV

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B. 33 KV

C. 120 KV

D. 240 KV

Answer : D

The value of the main voltage that is supplied to our homes from the substation

branches is 240 V.

Chapter 9 STARS AND GALAXIES

137. The surface temperature of the Sun is about

A. 500 C

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B. 6000 C

C. 50000 C

D. 60000 C

Answer : B

The temperature at its surface which range from 5500 C to 6000 C are hot enough to

melt almost anything.

138. This phenomenon escalates when the activities of sun spots reach a peak every 11

years are calledA. sun spots

B. solar patches

C. solar flaresD. prominences

Answer : CSolar flares are violent explosions on the surface of the sun. They occur near sunspots.

139. The brightest star seen from the Earth is known as

A. Milky Way

B. RigelC. the Great Dog

D. Sirius

Answer : D

The brightest star seen from Earth is Sirius.

140. What is the shape of the Milky Way?

A. OvalB. Spiral

C. Ellipse

D. Irregular

Answer : B

Milky Way has a spiral shape.

141. Which of the following objects is probably formed at the final stage in the death of a

star?

I. White dwarf

II. Black holeIII. Neutron star

A. I only

B. I, II

C. II,III

D. I, II, III

Answer : D

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A star will become either a white dwarf, neutron star or black hole when it dies,

depending on its size.

142. Which of the following concerning the Sun is false?

A. The Sun is about 1000 times the size of the Earth.B. The Sun is at the centre of the Solar System.

C. The Sun is approximately 4.5 billion years old.D. The Sun is the biggest object in the Solar System

Answer : A

The Suns diameter is 109 times the diameter of the Earth.

143. Which of the following concerning the corona of the Sun are correct?

I. Bright red layer of gas.II. It is the outermost layer of the atmosphere.

III. It can seen during the total eclipse of the Sun.

A. I onlyB. I, II

C. II, III

D. I, II, III

Answer : C

Chromosphere are bright red layer of gas below corona.

144. Which of the following gases will cause the Sun to burn out if it is all used up?

A. Neon

B. Oxygen

C. Carbon dioxideD. Hydrogen

Answer : D

The Sun is made up of hot gases, mostly hydrogen and helium.

Chapter 10 SPACE EXPLORATION

145.

Four moons orbit Jupiter

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Who, among the following astronomers, made this observation with his self-made

telescope?

A. Isaac NewtonB. Johannes Kepler

C. Nicholes Copernicus

D. Galileo Galilei

Answer : D

Galileo Galilei was the first man who used the telescope in the study of astronomy.

146. Remote sensing is used in

I. monitoring forest firesII. Monitoring soil condition

III. improving communications

A. I, IIB. I, III

C. II, III

D. I, II, III

Answer : A

Remote sensing is the technology involving the use of sensors to study Earthsactivities and phenomena from a distance above the Earths surface.

147. In what year did man land on the Moon for the first time?

A. 1998

B. 1972C. 1969

D. 1973

Answer : C

Neil Amstrong was the first astronaut to land on the Moon in the spaceship,Apollo 11

in 21 July 1969

148. Who was the first man orbit the Earth?

A. Konstantin Tsiolkovsky

B. Edwin Aldrin

C. Yuri Gagarin

D. Alexei A. Leonov

Answer : C

Yuri Gagarin, the first man in space in his spaceship.

149. The first shuttle was called

A. Columbia

B. SkylabC. Mir

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D. Discovery

Answer : A

Space shuttle Columbia was launched in 1981.

150. The satellite, Measat-1, launched by Malaysia is used mainly for

A. military and intelligence purposesB. forecasting the weatherC. communication and broadcasting purposes

D. exploration of outer space.

Answer : C

The satellite Measat-1,is used mainly for communication and broadcasting purposes.