Question 1

Which of the following sources of energy is non-renewable?
I. Coal
II. Solar
III. Wind
IV. Uranium-236

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

Question 2

The building block of a material with the smallest unit of matter that retains the properties of an element is

A. an ion.
B. an atom.
C. a molecule.
D. a proton.

Question 3

Oil from a mechanic workshop accidentally spilled into a pool of water which was breeding mosquitoes.
After some time, the pool of water was no longer breeding mosquitoes.
Which control method may have been deployed?

A. Biological control
B. Chemical control
C. Environmental control
D. Genetic control

Question 4

Grasshopper management is crucial because of all the following reasons except

A. damage to crops.
B. incomplete metamorphosis.
C. ecosystem disruption.
D. livestock harm.

Question 5

A hunter experiences a backward force upon firing a gun. Which of Newton's laws of motion is demonstrated in the situation?

A. First law
B. Second law
C. Third law
D. Law of inertia

Question 6

Which of the following sets of devices operate on the principle of magnetism?

A. Loudspeakers, compass, alarms
B. Loudspeakers, alarms, LCD TV
C. Compass, loudspeakers, LCD TV
D. Compass, loudspeakers, LCD TV

Question 7

Which of the following elements has four electron shells?

A. ₁₉K
B. ₁₃Al
C. ₁₅P
D. ₅B

Question 8

A livestock farmer wants to achieve good health for animals being reared.
Which of the following activities should be undertaken by the farmer?
I. Have vaccination schedules for the animals
II. Provide balanced ration to the animals
III. Provide good sanitation for the animals

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

Question 9

Canned foods and drinks have expiry dates on them. The hazard involved in taking an expired drink is

A. food poisoning.
B. impaired hearing.
C. poor circulation of blood.
D. suffocation.

Question 10

Two unknown solutions labelled A and B were brought to a JHS 3 class. It was observed that in solution A, red litmus paper changed colour to blue, while in solution B, red litmus paper retained its colour. What could be the content of solution A?

A. Car battery fluid
B. Salt solution
C. Baking soda
D. Orange juice

Question 11

A student who complained of stomach upset was given first aid with Mg(OH)2 boldly written on it. What could be the common name of the first aid the student was given?

A. Milk of aluminium
B. Milk of magnesia
C. Trisilicate
D. Martins liver salt

Question 12

A bowl of water on a gas stove was initially cold. It became warm after some time. What was the mode of heat transfer in the water?

A. Convection
B. Radiation
C. Emission
D. Conduction

Question 13

The portion of air which acts as a solvent is

A. oxygen.
B. carbon (IV) oxide.
C. nitrogen.
D. an inert gas.

Question 14

A natural phenomenon that illustrates the dispersal of light is

A. a rainbow.
B. an eclipse.
C. a rainfall.
D. an echo.

Question 15

When a stick is dipped into a pool of water, it appears to

A. be longer than its length.
B. bend away from the surface.
C. be seen straight in the water.
D. bend towards the surface.

Question 16

Which of the following electrical appliances can convert electrical energy to heat energy?
I. Electric iron
II. Kettle
III. Water heater

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

Question 17

The consequences of the greenhouse effect on humans include
I. flooding of coastal cities
II. desertification of fertile areas
III. increased number of storms
IV. increased use of fossil fuels

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

Question 18

Cockroaches in a cupboard were killed after an insecticide had been sprayed. The insecticide reached the cockroaches by the process of

A. osmosis.
B. absorption.
C. diffusion.
D. radiation.

Question 19

Which of the following nursery beds is suitable for a flood-prone area?

A. Plain bed
B. Sunken bed
C. Raised bed
D. Flat bed

Question 20

Which of the following natural cycles directly involves the sun?
I. Carbon cycle
II. Water cycle
III. Nitrogen cycle

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

Question 21

The primary purpose of respiration in man is
I. take in oxygen.
II. release carbon dioxide.
III. regulate body temperature.

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

Question 22

Nitrogen deficiency in soils causes

A. poor seed formation.
B. yellowing of leaves.
C. purple colouration.
D. fruit drop.

Question 23

An electric bulb is rated 0.5 A, 120 V. Determine the power produced when the bulb is turned on.

A. 60 kW
B. 60 W
C. 30 kW
D. 30 W

Question 24

The following processes are chemical changes except

A. crumpling of paper.
B. burning of wood.
C. mixing of an acid and a base.
D. rusting of iron.

Question 25

Which of the following statements best describes the term green economy? It includes

A. reduced ecological services.
B. loss of biodiversity.
C. reduced carbon emissions.
D. degrading the environment.

Question 26

The energy transformation that occurs when sodium hydroxide is dissolved in water is

A. heat to potential energy.
B. chemical to light energy.
C. chemical to heat energy.
D. heat to kinetic energy.

Question 27

Digestion of rice in humans starts from the

A. stomach.
B. gullet.
C. mouth.
D. colon.

Question 28

A substance that could be used in large scale treatment of domestic water is

A. Nitrogen.
B. Hydrogen sulphide.
C. Carbon dioxide.
D. Chlorine.

Question 29

Chlorophyll helps plants absorb energy from the sun as they undergo the process of photosynthesis. It is located in a structure called

A. chloroplast.
B. mitochondrion.
C. vacuole.
D. nucleus.

Question 30

An electrical engineer was in your school to replace a 20 W bulb with a 50 W bulb.
Use this information to answer the question below
The unit inscribed on the bulb measures its

A. energy.
B. work done.
C. power.
D. electricity.

Question 31

An electrical engineer was in your school to replace a 20 W bulb with a 50 W bulb.
Use this information to answer the question below
The 50 W bulb is likely to
I. increase the brightness in the room.
II. increase the amount of electricity consumed.
III. destroy the habitat of pests.

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

Question 32

The following devices work based on the principle of pressure in fluids except

A. siphons.
B. flutes.
C. drinking straws.
D. water pumps.

Question 33

In making ornaments and jewellery, non-reactive metals are preferred because they

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

Question 34

A metallic saddle was left in a boiling soup. After some time, the handle became hot.
This is because the particles in the saddle

A. undergo rapid, random motion,
B. contain free electrons which are able to transfer heat energy.
C. are separated by large distances.
D. circulate as a result of the temperature differences.

Question 35

The simplest way of making well water suitable for laundry is by

A. adding copper sulphate.
B. filtering.
C. boiling.
D. adding chlorine.

Question 36

A poultry farmer observed that the layers were producing thin-shelled eggs.
Use this information to answer the question below
The defect identified is mostly caused by a deficiency in

A. zinc.
B. photospheres.
C. magnesium.
D. calcium.

Question 37

A poultry farmer observed that the layers were producing thin-shelled eggs.
Use this information to answer the question below
What ingredient could be added to the feed to correct the defect?

A. Maize
B. Soya bean meal
C. Cowpea
D. Oyster shell meal

Question 38

Which of the following pairs of energy sources is environmentally friendly?

A. Coal and thermal energy
B. Wind and biogas
C. Wind and coal
D. Biogas and thermal energy

Question 39

A student is to measure 20 cm³ of a sodium hydroxide solution. What instrument could be used?

A. Measuring tape
B. Hygrometer
C. Measuring cylinder
D. Hydrometer

Question 40

A mother took her child to the hospital and upon investigation, it was noticed that the child's diet was lacking in zinc. What could this result in?
I. Decreased growth in the child
II. Anaemia and constipation
III. Inability of the body to fight infection

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