2007 June questions – Objective Test

1. Which of the following quantities is not a vector quantity?

A. force
B. mass
C. velocity
D. weight

2. Microbes are useful in the leather industry for

A. their use in tanning leather
B. beautifying leather products,
C. protecting leather against the environment
D. providing raw materials to the industry

3. The inorganic mineral particles of the soil are derived from

A. decaying animals
B. parent rock
C. decaying plants
D. root nodules

4. One reason for brushing the teeth regularly is to

A. reduce the amount of saliva in the mouth
B. remove dead cheek cells from the mouth
C. dilute the alkali content
D. reduce bacterial activity in the mouth

5. A converging lens can be used as magnifying glass, only when the object is placed

A. at the focal point
B. between the focal point and a distance twice the focal point
C. between the focal point and the optical centre
D. at a distance twice the focal length

6. Heavy traffic in cities causes

I. air pollution
II. noise pollution
III. hindrance to fast movement

A. I and II only
B. I and III only
C. II and III only
D. I, II and III

7. Which of the following compounds represents an alkanol?


8. Kinetic and potential energies are known collectively as

A. chemical energy
B. gravitational energy
C. mechanical energy
D. renewable energy

9. An element A has two electrons in its outer shell. Another element B has six electrons in its outer shell. The most likely compound which can be formed by the combination of the two elements is

B. AB2
C. A2B
D. A2B2

10. Which of the following structures controls the passage of dissolved substances in and out of living cells?

A. cell membrane
B. cytoplasm
C. Golgi bodies
D. nucleus

11. Pollution by carbon monoxide can be minimized by

A. effective burning of fuel
B. incomplete burning of fuel
C. using firewood as fuel
D. using petrol as fuel

12. Which of the following diseases is correctly matched with the animal it infects?

A. Rinderpest → chicken
B. Trypanosomiasis → cattle
C. Aspergillosis → pig
D. Anthrax → turkey

13. The advantages of family planning does not include

A. giving each child enough attention
B. reducing pressure on social amenities
C. preserving the health of the mother
D. choosing the sex of children to be born

14. Which of the following statements about non-dehiscent fruits is true?

A. their walls dry at maturity
B. their seeds are dispersed by wind
C. they contain numerous seeds
D. they do not split open when mature

15. A machine has a velocity ratio of 9 and needs an effort of 10 N to lift a load of 50 N. Calculate the efficiency of the machine.

A. 5%
B. 45%
C. 55%
D. 90%

16. The breakdown of cellulose by bacteria in ruminants occurs in the

A. abomasum
B. amsum
C. reticulum
D. rumen

17. A student performed an experiment to determine the percentage of air in a soil sample. The following were the readings: volume of water in measuring cylinder = 500cm3, volume of the soil added to water = 350cm3, volume of soil and water after stirring = 800cm3. What is the percentage of air in the soil?

A. 6.25%
B. 10.36%
C. 14.28%
D. 62.50%

18. In computer language, data can be defined as

A. raw facts that are fed into the computer
B. important business decisions stored on the computer
C. symbols and letters used in the computer
D. programs on a floppy disk

19. A body of mass 100.0 kg moves with a velocity of 8.0 ms−1. Calculate its kinetic energy

A. 400.0 J
B. 800.0 J
C. 3200.0 J
D. 4000.0 J

20. Which of the following characteristics is discontinuous variation?

A. blood group of patients in a hospital
B. complexion of members of a church
C. height of pupils in a class
D. weight of athletes in a team

21. The quantity of heat contained in a body does not depend on the

A. density of the body
B. mass of the body
C. temperature of the body
D. volume of the body

22. Female circumcision comes with all the following dangers except

A. development of frigidity.
B. excessive loss of blood
C. getting infected with diseases
D. having children with reduced intelligence

23. Which of the following processes is a physical process?

A. electrolysis
B. evaporation
C. photosynthesis
D. respiration

24. The following are all methods of maintaining sanitation in the community except

A. clearing of gutters
B. draining of stagnant waters
C. fitting of mosquito nets to houses
D. weeding around houses

25. A body of mass of 40.0 kg climbs a wall 2.0m high. What is the work done against gravity if g=10.0ms-2)

A. 80.0 J
B. 160.0 J
C. 200.0 J
D. 800.0 J

26. One reason why the spinal cord is enclosed in the neural canal is because

A. it is delicate
B. it is located at the back of the body
C. its distribution in the body must be restricted
D. it is an extension of brain

27. Which of the following tools is an example of a second class lever?

A. a claw hammer
B. a pair of tongs
C. a pair of scissors
D. a wheelbarrow

28. During exhalation, air is forced out of the lungs because

A. the concentration of carbon dioxide is higher within the lungs
B. pressure in the lungs is increased
C. the muscles of the diaphragm contract
D. the rib cage is raised upwards

29. An electric kettle is rated 2000W, 240V. Which of the following fuse ratings will you recommend for the kettle?

A. 5.0A
B. 8.3A
C. 13.0A
D. 15.0A

30. Which of the following ornamental plants is propagated by seed?

A. Croton
B. Ice plant
C. Milk bush
D. Red Ixora

31. To increase the stability of a body, the

A. body must be made heavier
B. height and base length of the body must be increased
C. base length must be increased
D. height of the body must reduced and the base length increased

32. The ability of the human body to resist infection by producing antibodies is known as

A. immunity
B. phagocytosis
C. mitosis
D. mutation

33. Ectoparasites in poultry are controlled by

A. dusting birds with chemicals
B. feeding birds with balanced ration
C. mixing drugs in feed
D. vaccinating birds with recommended drugs

34. An object is placed 50cm from a converging lens of focal length 15cm. The image formed is

A. real, inverted and diminished
B. real, inverted and magnified
C. real, inverted and same size as object
D. virtual, upright and magnified

35. Which of the following processes is an application of latent heat?

A. cooling water in a refrigerator
B. evaporation of sweat on the body
C. heating a bi-metallic strip
D. warming up water

36. Food substances can be prevented from growing mouldy by

I. adding sugar
II. pickling
III. Salting
IV. drying

A. I,II and III only
B. I, III and IV only
C. II, III and IV only
D. I ,II ,III and IV

37. Which of the following statements about fertilization in humans is true?

A. only one egg is fertilized at a time
B. it can occur at any time
C. many sperms fertilize the ovum
D. it always occurs inside the female

38. The best period to harvest fodder for preparing silage or hay is

A. the flowering stage
B. the flower drop stage
C. before flowering
D. after flowering

39. In the wiring of houses, appliances are connected in parallel to enable

A. each appliance have the same voltage
B. power to be saved
C. each appliance have the same current
D. the power to be stepped up

40. It is advisable to place windows of a room opposite each other in order to

A. have a wider field of view
B. allow fresh air to move through the room
C. create a humid condition in the room
D. allow enough sunshine into the room

41. Which of the following processes can be described as an indigenous technology?

A. Batik making
B. crude oil extraction
C. fertilizer application
D. Shea butter extraction

42. The left ventricle of the heart has the thickest wall because

A. it is the largest chamber of the heart
B. it requires much pressure to pump blood to the heart
C. the blood, which gets into the left ventricle is under low pressure
D. the left ventricle has to pump blood to all parts of the body

43. The best procedure of applying irrigation to crops is to

A. supply just the amount the crop requires
B. mulch before watering
C. water crops everyday
D. water anytime it does not rain

44. When a female animal is crossed with its own offspring the process is described as

A. artificial insemination
B. inbreeding
C. natural breeding
D. out-crossing

45. If one bird can lay 250 eggs per year, determine the number of birds that can lay 840,000 eggs per year

A. 280
B. 2,800
C. 2,976
D. 3,360

46. Which of the following chemical formulae correctly represents aluminum tetraoxosulphate (VI)?

A. Al(SO4)2
B. Al2SO4
C. Al2(SO4)3
D. Al3(SO4)2

47. Copper, silver and gold are able to resist corrosion and are therefore suitable for making

A. alloys
B. coins
C. engine blocks
D. paints

48. Biological control of malaria involves

A. draining breeding grounds of mosquitoes
B. spraying dieldrin onto surfaces where mosquitoes settle
C. introducing fish into ponds to feed on larvae and pupae of mosquitoes
D. burying all empty tins

49. Which of the following processes is used in the purification of water for town supply?

A. Addition of alum to quicken the rate of sedimentation
B. Exposure to air to increase oxygen content of water
C. Filtration to remove micro-organisms
D. Pumping of water from the water station

50. Personal hygiene involves

I. brushing the teeth regularly
II. cutting the nails
III. Combing the hair
IV. sweeping the compound

A. I, II and III only
B. I,II and IV only
C. I,III and IV only
D. I, II,III,and IV

51. Which of the following ranks of organisms will have more closely related characteristics?

A. Class
B. Family
C. Genus
D. Order

52. Anaemia in cattle is likely to result from attack by

A. roundworms
B. tapeworms
C. ticks
D. trypanosoma

53. The degree of soil erosion is not affected by the

A. amount of rainfall
B. leaching of soil nutrients
C. amount of vegetation cover on the soil
D. physical nature of the soil

54. Which of the following statements about a bucket of water and a cup of water both 100°C is true?

A. The cup of water contains more heat energy than the water in the bucket.
B. The bucket of water will heat faster
C. Both of them have the same amount of heat energy
D. The bucket of water contains more heat energy than the cup of water

55. A helium nucleus has two protons. How many electrons must be present in its shell to make it a neutral atom?

A. −4
B. −2
C. +2
D. +4

56. Which of the following cultural practices help to conserve the forest?

A. cover cropping
B. crop rotation
C. mechanized farming
D. shifting cultivation

57. The following are all physical properties of matter except

A. capillarity
B. heat
C. viscosity
D. volume

58. Medulla oblongata is part of the

A. fore-brain
B. hind-brain
C. mid-brain
D. spinal cord

59. Plant diseases across borders are prevented and controlled by

A. education
B. cross breeding
C. inoculation
D. quarantining

60. Which of the following properties is not a feature of a secondary cell?

A. it produces an alternating current
B. it can be recharged
C. it lasts longer than a primary cell
D. it can be used for heavy duty purposes.

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