1.
Which of the following substances is capable of neutralizing an acid?
Vinegar
Water
Sodium chloride
Sodium hydroxide
Answer: D
2.
The force which acts between planets and keeps them in their orbits is called
electrical force
magnetic force
gravitational force
frictional force
Answer: C
3.
The instrument used to measure potential difference across a resistor is
ammeter.
barometer.
hydrometer.
voltmeter.
Answer: D
Voltmeter: is used to measure the potential difference between two points in an electrical circuit and its connected in parallel in an electric circuit
4.
Producers in an ecosystem are plants that
attract insects
feed on other plants
feed on dead materials
manufacture their own food
Answer: D
5.
An example of a crop that reduces the fertility of the soil rapidly is
Beans
Legumes
Groundnuts
Cassava
Answer: D
6.
Which of the following devices requires the use of transistors in its operation?
Computer
Electric heater
Microphone
Wall clock
Answer: A
7.
When a stick is dipped into a pool of water, it appears to
be longer than its length.
ben away from the surface.
be seen straight in the water.
bend towards the surface.
Answer: D
8.
Which of the following methods of treating water makes it soft?
Addition of alum
Addition of sodium carbonate
Chlorination
Filtration
Answer: B
9.
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
zinc..
photospheres..
magnesium.
calcium.
Answer: D
10.
Which of the following chemical symbols can be used to remove permanent hardness of water?
NaHCO3
Na2CO3
Ca(HCO3)2
CaCO3
Answer: B
Permanent hardness of water is due to dissolved salts of chlorides and sulphates of calcium and magnesium which can be removed by adding sodium carbonate (Na2CO3) (washing soda or soda ash) which reacts with these dissolved salts to form insoluble carbonates that can be removed by filtration and then water becomes soft.
11.
The practice of growing cowpea and maize on a piece of land at the same time is known as
mixed farming.
mixed cropping.
land rotation.
crop rotation.
Answer: B
Mixed Cropping
When two or more crops are grown on the same land simultaneously (at the same time), it is known as mixed cropping
Mixed Farming
Growing crops as well as livestock, animal husbandry,etc all on same farm or land.
Crop Rotation
The practice of planting different crops across a sequence of growing seasons on the same plot of land to improve soil health, optimize nutrients in the soil, and combat pest and weed pressure.
12.
The force which tends to pull an object in a circular motion towards the centre of the circle is called
centripetal force.
electrostatic force.
gravitational force.
magnetic force.
Answer: A
13.
Which of the following activities are cultural practices in vegetable production?
I. Application of fertilizer
II. Harvesting
III. Mulching
I and II only
I and III only
II and III only
I, II and III
Answer: D
Cultural Practices in vegetation production
1. Mulching
2. Thinning out
3. Pruning
4. Stirring
5. Weeding
6. Fertilizer application
7. Earthing-up
8. Pest control
9. Disease control
10. Harvesting
11. Storage
12. Marketing
14.
All the living and non-living things that surround an organism constitute its
community.
ecosystem.
environment.
habitat.
Answer: C
Environment
A sum total of all the living and non-living elements and their effects that influence human life.
Habitat:
A smaller geographic area where an organism resides is called habitat.
Ecosystem:
A larger geographical area that comprises other species and their interactions is called an ecosystem.
15.
Dissolved mineral salts from the soil enter the plant by the process of
phototropism
transpiration
diffusion
osmosis
Answer: C
16.
The female part of a flower is called the
filament.
petal.
pollen grain.
sepal.
Style.
Answer: E
17.
What is the chemical symbol for silver?
Ag
Au
Si
S
Answer: A
18.
The carrier of the malaria parasite is the
black fly.
tsetse fly.
female anopheles mosquito.
male anopheles mosquito.
Answer: C
Why the male mosquitoes cannot transmit malaria
The biting female Anopheles mosquito may carry malaria. Male mosquitoes do not bite so cannot transmit malaria or other diseases. The adult females are generally short-lived, with only a small proportion living long enough (more than 10 days in tropical regions) to transmit malaria.
19.
The end-product of protein digestion is
amino acid.
glycerol.
glycogen.
peptide.
Answer: A
20.
Which of the following pairs of diseases can be spread easily when food is exposed to houseflies?
Dysentery and malaria
Malaria and tuberculosis
Dysentery and cholera
Cholera and tuberculosis
Answer: C
21.
Boiling and chlorination are used in water purification to
kill germs.
help suspended particles to settle.
remove suspended particles.
remove hardness of the water.
Answer: A
22.
Which of the following factors are used to describe a fertile soil?
I. Amount of organic matter
II. Color
III. Texture
I and II only
I only and III only
II and III only
I,II and III only
Answer: A
Soil fertility refers to the ability of soil to sustain agricultural plant growth, i.e. to provide plant habitat and result in sustained and consistent yields of high quality. Soil factors: Soil moisture, color, soil air, soil temperature, soil mineral matter, inorganic and organic components, microorganisms, soil reaction
23.
Which of the following diseases is caused by a fungus?
Typhoid
Leprosy
Ringworm
Measles
Answer: C
24.
Which of the following sources of energy is non-renewable?
I. Coal
II. Solar
III. Wind
IV. Uranium-236
I, II and III only
II, III and IV only
I and IV only
II and III only
Answer: C
A renewable source can replenish itself at the rate it is used, while a non-renewable source has a limited supply.
Renewable sources include timber, wind, and solar while non-renewable sources include coal and natural gas.
25.
Which of the following diseases will result from eating improperly cooked meat?
Tapeworm infestation
Guinea worm infestation
Small pox
Leprosy
Answer: A
26.
Which of the following statements about an opaque object is correct? An opaque object
allows light to pass through it partially.
allows light to pass through it fully.
forms a shadow.
does not form a shadow.
Answer: C
27.
The part of the plant which is found in the soil is the
flower
stem
leaf
root
Answer: D
28.
Which of the following processes results in the formation of new substances?
Heating camphor
Cooling water to form ice
Adding saliva to cooked yam
Mixing iron dust and sand together
Answer: C
On addition of saliva which contains an amylase to the cooked yam, a starch digesting enzyme (chemical compound that catalyzes the breakdown of starch), the starch gradually converts to sugar (new substance formed).
29.
The smallest planet known in the solar system is
Earth
Jupiter
Mars
Mercury
Venus
Answer: D
30.
An object at rest may have
velocity
momentum
kinetic energy
potential energy
Answer: D
31.
It is not advisable to sleep in a closed dark room with green plants because the plants
produce heat.
compete with human beings for oxygen.
absorb water vapour.
produce carbon dioxide.
Answer: D
32.
A mixture of sugar and water can be separated by
Filtration
Evaporation
Decantation
Distillation
Answer: B
33.
Which of the following energy changes takes place when a church bell is tolled?
Potential energy to kinetic energy
Kinetic energy to sound energy
Potential energy to sound energy
Chemical energy to heat energy
Answer: B
34.
Answer: C
35.
Which of the following organisms causes malaria?
Tsetsefly
Fungi
Virus
Plasmodium
Answer: D
36.
Which of the following parasites is a plant?
Bilharzia
Dodder
Lice
Tapeworm
Answer: B
DODDER (Plant Parasite)

37.
Which of the following is not a characteristic of all living things?
Transpiration
Growth
Reproduction
Feeding
Answer: A
38.
The physical change(s) that take(s) place when a piece of ice is heated continuously for a long time can be represented by
solid → vapour
vapour → solid → liquid
solid → liquid → vapour
liquid → vapour
Answer: C
Ice is in the solid state. When heated, it melts into the liquid state (water) and which (water) when further heated vapourizes.
39.
Which of the following statement(s) about pressure in fluids is/are correct? Pressure
I. decreases with depth
II. increases with depth
III. does not depend on the area
I only
II only
I and II only
II and III only
Answer: B
The pressure in a liquid is different at different depths. Pressure increases as the depth increases. The pressure in a liquid is due to the weight of the column of water above. Since the particles in a liquid are tightly packed, this pressure acts in all directions. For example, the pressure acting on a dam at the bottom of a reservoir is greater than the pressure acting near the top. This is why dam walls are usually wedge-shaped. The greater pressure at the bottom would give a greater ‘force per unit area’ on the wall.
40.
Which of the following substances is a salt?
H2SO4
NaOH
HCl
CaCl2
Answer: D
a)
i)
What is a food chain?
ii)
Why is the plant in any food chain referred to as producer?
iii)
What is the term given to the other organisms that depend directly or indirectly on the producer for food.
b)
The diagram below is an illustration of the picture obtained on a screen when an opaque object is placed in the in the path of a light source.
Study the diagram carefully and answer the questions that follow.

i)
Name each of the shadows that is cast on the screen:
α)
A;
β)
B.
ii)
What does the shadow of the object cast on the screen illustrate?
c)
Describe briefly how a sample of pure sugar could be obtained from a mixture of sugar and sand.
d)
State three ways by which soil can be conserved.
a)
i)
Food chain is the linear relationship between organisms that shows the transfer of energy from one organism to another through feeding and being fed on by another.
ii)
Because plants produce/make their own food through the process of photosynthesis
iii)
Consumer(s)
b)
i)
Name of shadows
α)
A → Umbra/Total shadow
β)
B → Penumbra/Partial shadow
ii)
It illustrates that light travels in a straight light
c)
How to separate Sugar from Sand
1. Pour the mixture into a funnel fitted with filter paper placed over a beaker
2. Add water to the mixture and stir for the sugar solution (sugar and water) to drain
3. The filtrate (sugar and water) is evaporated to remove the water from it leaving only the sugar
d)
Ways of conserving soil
1. Crop rotation
2. Mulching
3. Addition of fertilizer/manure
4. Avoid overgrazing
5. Afforestation
6. Avoid bush burning
7. Practice cover cropping
8. Prevent soil erosion
a)
i)
What is a magnetic field?
ii)
Name two methods of making magnets.
b)
Explain briefly the term teenage pregnancy.
c)
Write the formula for each of the following compounds:
i)
calcium chloride;
ii)
copper (I) oxide;
iii)
nitrogen (IV) oxide;
iv)
ammonia.
d)
i)
List three physical properties of soil.
ii)
What is the texture of clayey soil?
a)
i)
Magnetic field is a region/area around a magnet/moving electric charge within which the force of magnetism acts/can be felt/experienced
ii)
Methods of making magnets
1. By induction
2. By stroking
3. By the use of electricity
4. By hammering/hitting
b)
Teenage Pregnancy
When a girl under the age of 20 conceives/takes seed or when a female/girl under the age of 20 gets pregnant
c)
i)
calcium chloride → CaCl2
ii)
copper (I) oxide → Cu2O
iii)
nitrogen (IV) oxide → NO2
iv)
ammonia → NH3
d)
i)
Physical properties of soil
1. Texture
2. Structure
3. Temperature
4. Colour
5. Permeability
6. Water
7. Capillarity
8. Organism
9. Drainage
10. Air
11. Strength/consistence
12. Porosity
ii)
Texture of clayey soil
It is smooth/slippery/sticky when wet
(a)
(i)
Define density of a substance
(ii)
Explain how the density of a stone could be determined
(b)
A box with a volume of 1000 m3 is filled with sand to the brim. If the density of sand is 2 kgm-3, calculate the mass of sand in the box.
(c)
Copy and complete the table below:
| Parasite | Disease | Prevention |
| Vibrio cholerae | Cholera | Eating hot food |
| Plasmodium | (i) | (ii) |
| Louse | (iii) | Personal Hygiene |
| (iv) | Ringworm | (v) |
(d)
Name the method which could be used to separate each of the following mixtures into their components:
(i)
Alcohol and water
(ii)
Salt and water
(iii)
Powdered charcoal and iron filings
(iv)
Powdered chalk and water
(a)
(i)
Density is the mass per unit volume of a substance
OR
Density =
(ii)
Determination of the density of stone
1. Measure/weigh the mass of stone by means of a beam/chemical balance as M g
2. Fill a large measuring cylinder with water to a suitable level and record the volume as V1 cm3
3. Tie the stone with thread and gently lower it into the water in the measuring cylinder and record the new volume as V2 cm3
The density of the stone is then calculated as follows:
Volume of stone = V2 cm3 - V1 cm3
Mass of stone = M g
Density =
Density of the stone =
(b)
Density =
Density x Volume = Mass
∴ Mass = Density x Volume
Density = 2 kgm-3
Volume = 1000 m3
Mass = 2 kgm-3 x 1000 m3
Mass = 2000 kg
(c)
Parasite |
Disease |
Prevention |
Vibrio cholerae |
Cholera |
Eating hot food |
Plasmodium |
(i) Malaria |
(ii) 1. Sleeping in mosquito nets
|
Louse |
(iii) Typhus |
Personal Hygiene |
|
(iv) Fungus |
Ringworm |
(v) 1. Avoid sharing comb and towel
|
(d)
Methods of separation:
(i)
Alcohol and water → Distillation/fractional distillation
(ii)
Salt and water → Distillation/Evaporation and condensation
(iii)
Powdered charcoal and iron filings → Use of magnet
(iv)
Powdered chalk and water → Filtration/decantation
a)
Name four characteristics of non-living things.
b)
Mention two functions of each of the following parts of a plant:
i)
leaves
ii)
roots
c)
Classify the following actions as voluntary or involuntary:
i)
eating
ii)
walking
iii)
sneezing
iv)
laughing
d)
i)
Explain the difference between a physical change and a chemical change.
ii)
Write down the chemical equation for the preparation of carbon dioxide in the laboratory.
e)
i)
What is a machine?
ii)
Write down an expression for the efficiency of a machine.
a)
Characteristics of non-living things
1. They do not respire
2. They do not move on their own accord
3. They do not excrete
4. The do not reproduce
5. The do not feed
6. The do not grow
7. The do not feel/respond to stimuli
b)
i)
Functions of leaves to the plant
1. They manufacture food for the plant
2. They help in getting rid of excess water in a plant
3. The exchange of gases between the atmosphere and a plant takes place through the stomata on the leaves
ii)
Functions of roots to the plant
1. They anchor/hold/support the plants firmly in the soil
2. They absorb water and dissolved mineral salts from the soil
3. They store excess food in some plants
4. They are responsible for exchange of gases in some plants in marshy habitats
5. In some plants, the roots are a means of reproduction
c)
Voluntary and Involuntary actions
i)
eating → voluntary
ii)
walking → voluntary
iii)
sneezing → involuntary
iv)
laughing → voluntary
d)
i)
Differences between a physical change and a chemical change
| Physical Change | Chemical Change |
| No new substance is formed | New substance is formed |
| It is easily reversible | It is irreversible |
| It is not accompanied by great heat change | It is accompanied by great heat change |
| There is no change in mass | There is change in mass |
| Individual components retain their properties | Individual components lose their properties |
ii)
Chemical equation for the preparation of carbon dioxide
2HCl + CaCO3 → CaCl2 + H2O + CO2
e)
i)
A machine is a device that helps us to do work easier/faster.
OR
A machine is a device that enables a small force (effort) to overcome a large force (load).
ii)
Efficiency of a machine =
OR
Efficiency of a machine =
OR
Efficiency of a machine =
(a)
What is a living cell?
(b)
Give one function of each of the following components of a living cell:
(i)
cell membrane
(ii)
chloroplast
(iii)
nucleus
(c)
Make sketches to show the arrangement of the particles in each of the three states of matter.
(d)
What instrument would you use to measure each of the following quantities:
(i)
volume of a liquid
(ii)
mass of a stone
(iii)
time
(iv)
speed of the wind?
(a)
Living cell is the smallest basic unit of a plant or animal/living organism
(b)
(i)
Functions of the cell membrane
1. It protects a cell
2. It allows only selected substances to enter or leave the cell
(ii)
Function of the chloroplast
It contains chlorophyll (green pigment) which traps sunlight for photosynthesis
(iii)
Functions of the nucleus
1. Embodies the genetic information (genes) of the organism
2. Makes cell division or reproduction possible
3. Controls the activites of the cell
(c)
Arrangement of molecules in a solid

Arrangement of molecules in a liquid

Arrangement of molecules in a gas

(d)
Measuring instruments
| # | Qunatity | Instrument(s) |
i. |
Volume of a liquid |
1. Measuring cylinder
|
ii. |
Mass of a stone |
1. Beam balance
|
iii. |
Time |
1. Watch/clock
|
iv. |
Speed of the wind |
Anemometer |
(a)
(i)
What is refraction of light?
(ii)
Sketch a diagram to show the path of a light ray when it travels from air to glass.
(b)
Explain why it is difficult to separate iron and sulphur mixture after strong heating.
(c)
(i)
Give two examples of digestive enzymes produced in humans.
(ii)
For each of the enzymes given in (i), name the part of the human body where the enzyme is produced.
(d)
List four methods of applying fertilizers to crops.
(a)
(i)
Refraction of light is the bending/change in direction/change in velocity of light as it travels from one medium to another.
(ii)

(b)
Why it is difficult to separate iron and sulphur mixture after strong heating
It leads to a chemical change resulting in the formation of a compound (iron sulphide)/a compound is formed.
(c)
| Name of enzyme | Part of the human body where it is produced |
| Ptyalin | Salivary gland |
| Amylase | Pancreas/Small intestine |
| Pepsin | Stomach |
| Rennin | Stomach |
| Lipases | Pancreas/Small intestine |
| Trypsin | Small intestine |
(d)
Methods of applying fertilizers to crops
1. Ringing
2. Side placement/side dressing
3. Foliar/aerial application/spraying
4. Inter-raw placement
5. Band placement
6. Drilling
7. Broadcasting
8. Through irrigation water/fertigation
9. Top dressing