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.
