Question 1

The S.I unit for measuring the work done by a force is

A. J.
B. K.
C. N.
D. W.

Question 2

The chemical formula of a compound describes the

A. number of molecules in the compound.
B. type of bonding in the compound.
C. ratio in which the elements are combined.
D. state of the compound.

Question 3

Which of the following life processes is represented by the equation glucose + oxygen → carbon dioxide + water + energy?

A. Digestion
B. Excretion
C. Photosynthesis
D. Respiration

Question 4

Each layer of soil profile is known as

A. horizon.
B. litter.
C. regolith.
D. solum.

Question 5

When the p-n junction of a transistor is reversed biased

A. current flows from the p-type to the n-type.
B. no current flows from the p-type to the n-type.
C. conduction of current occurs.
D. current flows from the n-type to the p-type.

Question 6

When a solid-liquid mixture is filtered, the liquid that separates out into the container is called

A. filtrate.
B. residue.
C. sediment.
D. solution.

Question 7

Which of the following processes involves the solid state of matter?

A. Boiling
B. Condensation
C. Evaporation
D. Melting

Question 8

Which of the following farming systems is most effective in maintaining soil fertility?

A. Crop rotation
B. Land rotation
C. Mixed cropping
D. Monoculture

Question 9

The disease in humans which is associated with insufficient intake of calcium is

A. goiter.
B. kwashiorkor.
C. rickets.
D. scurvy.

Question 10

The arrow in the circuit symbol of either n-p-n or p-n-p transistor is always on the

A. base lead.
B. collector lead.
C. emitter lead.
D. receiver lead.

Question 11

Which of the following insect pests of crops has piercing and sucking mouthparts?

A. Aphids
B. Grasshoppers
C. Stemborers
D. Termites

Question 12

A reflex action involves the

A. brain and muscles.
B. brain and nerves.
C. spinal cord and muscles.
">D. spinal cord and nerves.

Question 13

The type of image formed in a plane mirror is always

A. diminished.
B. enlarged.
C. real.
D. virtual.

Question 14

Which of the following statements about acids are correct?

I. They turn red litmus paper blue

II. They can be classified as either organic or mineral acids

III. They can be neutralized by bases

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

Question 15

A transistor is said to operate in an active region when

A. one p-n junction is forward biased and the other is reverse biased.
B. base-emitter junctions are reverse biased.
C. both p-n junctions are reverse biased.
D. base-collector junction is forward biased.

Question 16

Tuberculosis is spread

A. through eating of contaminated food.
B. when an infected person coughs openly into the air.
C. through shaking of hands of infected persons.
D. through sharing of contaminated syringes.

Question 17

One function of engine oil in the engine of a tractor is to

A. warm the engine.
B. enhance air intake.
C. ensure proper mixing of fuel.
D. lubricate the engine parts.

Question 18

Black pod is a disease of

A. cocoa.
B. coffee.
C. guava.
D. mango.

Question 19

The efficiency of a machine is always less than 100% because part of the energy input is used to

A. stop the machine after working.
B. perform useful work of the load.
C. overcome friction.
D. lift the machine up.

Question 20

Which of the following electronic components are used to produce oscillator circuits?

I. Transistor

II. Inductor

III. Capacitor

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

Question 21

Which of the following sources of light is natural?

A. Filament bulb
B. Fluorescent tube
C. Glow worm
D. Fire cracker

Question 22

Which of the following substances are carried by the blood?

I. Hormones

II. Urine

III. Oxygen

IV. Carbon dioxide

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

Question 23

The practice of starting new organization in response to identified opportunities is termed

A. agribusiness.
B. business enterprise.
C. entrepreneurship.
D. management.

Question 24

The sub-atomic particle with zero charge in the nucleus of an atoms is called

A. electron.
B. ion.
C. neutron.
D. proton.

Question 25

Which of the following management practices greatly helps in record keeping?

A. Culling
B. Debeaking
C. Dehorning
D. Identification

Question 26

In a pin-hole camera, when the size of the pin-hole is increased, the image formed is

A. blurred.
B. erect.
C. magnified.
D. virtual.

Question 27

Non-reactive metals are preferred in making ornaments and jewellery because they

A. are attractive.
B. do not react with atmospheric oxygen.
C. do not retain their luster.
D. are corrosive.

Question 28

Producers in an ecosystem are plants that

A. attracts insects.
B. feed on other plants.
C. manufacture their own food.
D. trap insects.

Question 29

The use of resistant varieties of crop in controlling diseases is described as

A. biological control method.
B. chemical control method.
C. cultural control method.
D. physical control method.

Question 30

The chemical formula for aluminium oxide is represented as AlxOy. The values of x and y are respectively

A. 3 and 2.
B. 3 and 1.
C. 1 and 3.
D. 2 and 3.

Question 31

In electrical circuits, the component that protects appliances against high currents is the

A. capacitor.
B. fuse.
C. resistor.
D. switch.

Question 32

One benefit of technology to industrialization is

A. environmental pollution.
B. reduction in skilful labour
C. provision of machinery.
D. increase in cost of production of goods.

Question 33

Which of the following factors contribute to early parenthood?

I. Poverty

II. Illiteracy

III. Lack of parental care

IV. Peer pressure

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

Question 34

Which of the following examples of fertilizers improves soil texture?

A. Compost
B. N.P.K.
C. Sulphate of ammonia
D. Urea

Question 35

The reaction between hydrochloric acid and sodium hydroxide produces

A. sodium oxide only.
B. sodium chloride only.
C. sodium oxide and water.
D. sodium chloride and water.

Question 36

In modern electrical wirings the colour code for the live wire is

A. blue.
B. brown.
C. green.
D. green and yellow.

Question 37

An example of soil minor nutrient is

A. calcium.
B. iron.
C. nitrogen.
D. phosphorus.

Question 38

The complete development of a human foetus in the womb normally takes

A. 7 months.
B. 8 months.
C. 9 months.
D. 10 months.

Question 39

A material that allows a small amount of light energy to pass through it but cannot be seen through is referred to as

A. opaque.
B. reflective.
C. translucent.
D. transparent.

Question 40

The leads of the transistor responsible for activation is the

A. amplifier.
B. base.
C. collector.
D. emitter.