1. Gum-bleeding in humans is caused by the deficiency of
A. vitamin A
B. vitamin B
C. vitamin C
D. vitamin D
2. Linnaeus system of classification of living things is based on
A. appearance and size
B. natural relationships
C. body size
D. jointed system
3. A machine is classified as a first class level when the
A. pivot is between the load and the effort
B. load is between the effort and the pivot
C. pivot is beyond the effort
D. load is before the pivot and effort
4. The process by which various components of crude petroleum are obtained is known as
A. catalytic cracking
B. decomposition
C. fractional distillation
D. hydrogenation
5. Which of the following signs is associated with parturition in a cattle?
A. the belly becomes distended and drops
B. the vulva becomes contracted
C. difficulty in urination
D. the udder becomes smaller
6. Under which of the following conditions will maize germinate? If they are placed on
A. moist cotton in a test tube
B. dry cotton in a test tube
C moist cotton in a test tube immersed in ice cubes
D. cotton wool covered with water having oil at the surface
7. A wet piece of cloth dries faster when spread than folded because the
A. temperature will be even in the cloth
B. water will drop out of the cloth faster
C. large surface area will aid evaporation of water
D. water will be distributed evenly in the cloth
8. Fertilization in humans usually occurs in the
A. ovary
B. oviduct
C. uterus
D. vagina
9. In the preparation of local soap, the ash of plantain peels is added to the palm oil in order to
A. thicken the oil
B. give colour to the soap
C. provide alkali
D. give the soap a pleasant smell
10. Which of the following management practices ensure the raising of healthy chicks?
I. Controlling of human traffic to the brooder house
II. Debeaking chicks when they are two weeks old
III. Ensuring good ventilation in the brooder house
IV. Visiting older chicks first before the brooding chicks
A. I and II only
B. III and IV only
C. I, II and III only
D. I, III and IV only
11. Which of the following statements about a food web is true?
A. The producers are soil micro-organisms
B. Each consumer feeds on a particular organism
C. The tertiary consumers are herbivores
D. One organism may be fed upon by several others
12. In flowering plants, mineral salts are transported through the
A. cambium
B. phloem
C. stomata
D. xylem
The diagram below is an illustration of laboratory apparatus. Use it to answer Questions 13 and 14.
13. The apparatus illustrated is a
A. stirring rod
B. retort stand
C. pair of tongs
D. test tube holder
14. The apparatus is used to
A. crush solids
B. hold objects in firm position
C. take small amounts of substances
D. hold a test tube during heating
15. 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
16. Which of the following statements about anaerobic respiration is correct?
A. Carbon dioxide and water are produced
B. Oxygen gas is released
C. Oxygen gas is used up
D. Glucose is broken down
17. Consider the chemical equation below
CH3COOH + C2H5OH → CH3COOC2H
This equation represents
A. an addition reaction
B. a neutralization reaction
C. an esterification reaction
D. a saponification reaction
18. Which of the following methods could be used to control waterlogging in soils?
A. drainage
B. irrigation
C. leaching
D. mulching
19. When an N-P-N transistor is used as a simple amplifier, the base-emitter junction is
I. forward biased
II. reverse biased
III. neutral
A. I only
B. II only
C. III only
D. I and III only
20. Which of the following movements occur when the arm of a human is bent?
A. biceps relaxes and triceps contracts
B. biceps contracts and triceps relaxes
C. both biceps and triceps relax
D. both biceps and triceps contract
21. Tsetse fly is the vector of
A. elephantiasis
B. malaria
C. river blindness
D. sleeping sickness
22. A small metal block is 12 cm long, 6.0 cm high and 4.0 cm wide. If it has a mass of 1.5 kg, determine its density
A. 0.2 g cm−3
B. 5.2 g cm−3
C. 192.0 g cm−3
D. 288.0 g cm−3
23. Damage to the brain and spinal cord are usually permanent and irreversible because
A. damaged nerve cells never heal
B. path of the nerve impulse is much longer
C. of the presence of chemicals in the brain
D. of the inability of pain receptors to carry impulses
24. The following gases are constituents of air except
A. carbon dioxide
B. nitrogen
C. oxygen
D. Sulphur
25. The difficulty encountered by pigs in loosing body heat through perspiration could be overcome by
A. deworming the pigs
B. using dry bedding in the sty
C. providing fresh clean water in the sty
D. avoid overcrowding of pigs in the sty
