1.
Which of the following human activities pollutes the environment?
I. Release of cement dust into the atmosphere
II. Dumping of refuse into water bodies
III. Burning of rubbish
I and II only
II and III only
I and III only
I, II and III
Answer: D
2.
Which of the following is not a way of preventing soil erosion?
Planting trees on bare soil.
Clearing trees along slopes
Planting grasses along slopes
Ploughing across slopes
Answer: B
3.
Which of the following bodies is a satellite of the earth?
Mars
Sun
Venus
Moon
Answer: D
4.
A substance which cannot be broken down into simpler substances is called
a molecule
a compound
an element
a mixture
Answer: E
5.
Which of the following does not play any part in digestion?
Mouth
duodenum
rectum
pancreas
Answer: C
6.
Which of the following soils is likely to be found in a waterlogged area?
Sand
Clay
Gravel
Black soil
Answer: B
7.
Steam changes to liquid by a process called
evaporation.
condensation.
melting.
boiling.
Answer: B
8.
Which of the following is equal to one metre?
1 cm
10 cm
100 cm
500 cm
Answer: C
9.
The organ which enables a fish to breathe in water is the
Nostril
Pectoral fin
Dorsal fin
Gall bladder
Answer: E
10.
A boy who is seventeen years old is an
adult
adolescent
old person
infant
Answer: B
The World Health Organization (WHO) defines an adolescent as any person between ages 10 and 19.
11.
Which of the following causes ringworm?
Bacteria
Fungi
Protozoa
Ticks
Answer: B
12.
The purpose of vaccination is to
replace poisoned tissues
kill disease-producing organisms in the body
increase the activity of white blood cells
induce the production of anti bodies
Answer: D
13.
Which of the following energy changes takes place in ringing bell?
Potential to kinetic
Potential to sound
Mechanical to sound
Sound to light
Answer: C
The mechanical energy is used to vibrate the metallic body of the ring-bell. When the bell vibrates, it produces sound energy.
14.
Which of the following farming practices promote soil erosion
I. Alley cropping
II. Bush burning
III. Over grazing
I and II only
I and III only
II and III only
I, II and III
Answer: C
Therefore Bush burning and Overgrazing promote soil erosion.
15.
Atoms of the same element have the same
I. number of electrons
II. number of protons
III. chemical properties
Which of the above statements are true?
I and II only
II and III only
I and II only
I, II and III
Answer: D
16.
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
17.
The hard outer surface of a tooth is called
root.
dentine.
cement.
enamel.
Answer: D

Root
The root is the part of the tooth that extends into the bone and holds the tooth in place. It makes up approximately two-thirds of the tooth.
Enamel
The enamel is the outermost layer of a tooth. As the hardest tissue in your body, it helps to protect teeth from bacteria. It also provides strength so your teeth can withstand pressure from chewing.
Dentin
Dentin is a layer of mineralized tissue just below the enamel. It extends from the crown down through the neck and root. It protects teeth from heat and cold.
18.
The process whereby soil is formed by the breakdown of rocks is called
composting.
erosion.
leaching.
weathering.
Answer: D
19.
The part of a living cell which is semi-permeable is
cytoplasm.
nucleus.
protoplasm.
cell membrane.
Answer: D
20.
Which of the following processes of conversion of the state of matter is correct.
Solid →heat gas →heat liquid
Solid →cool liquid →cool gas
Gas →heat liquid →heat solid
Gas →cool liquid →cool solid
Answer: D
You have to cool a gas to obtain the liquid form of the gas and you have to cool a liquid to obtain the solid form of the liquid.
21.
Which of the following pairs of organisms are decomposers?
Animals and bacteria
Animals and fungi
Bacteria and plants
Bacteria and fungi
Answer: D
22.
In electronic circuits, LEDs are used to indicate the absence or presence of
emitter and collector
electric current
p-n junction
voltage source
Answer: B
23.
Plants lose water through a process called
photosynthesis
fertilization
transpiration
respiration
Answer: C
24.
The function of the white blood cells in humans is to
produce haemoglobin.
produce digestive enzymes.
ensure blood clot during an injury.
produce antibodies to fight disease causing organisms.
Answer: D
25.
Which of the following statements about the solar system is true? The
sun moves round the earth
planets move round the sun
planets move round the moon
sun moves in its orbit
Answer: B
26.
How many days does the moon take to go round the earth.
31
30
29
27
Answer: C
27.
An electric bulb is rated 0.5 A, 120 V. Determine the power produced when the bulb is turned on.
60 kW
60 W
30 kW
30 W
Answer: B
Power = Current(I) x Potential Difference/Voltage(V)
P = IV
Current (I) = 0.5 A =
Potential Difference/Voltage(V) = 120V
Power = x 120 W = 60 W
28.
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
29.
The paired fins in fishes are used for
protection and diving
diving and balancing
balancing and control
steering and diving
Answer: E
30.
Which of the following instruments can be used to measure the diameter of a circle?
A metre-rule
A thermometer
An ammeter
A string
Answer: A
Metre-rule is used to measure length. Diameter of a circle is a length.
Thermometer is used to measure temperature
Ammeter is used for measuring either direct (DC) or alternating (AC) electric current, in amperes.
31.
The process which takes place in all living cells is
digestion.
fertilization.
photosynthesis.
respiration.
Answer: D
32.
Which of the following type of teeth is used by mammals to tear food material?
Canines
Incisors
Molars
Premolars
Answer: A
33.
An example of a vegetable crop is
cocoa.
cotton.
potato.
tomato.
Answer: D
34.
The property of a metal that makes it possible for it to be beaten into different shapes is called
conductivity.
ductility.
malleability.
resistivity.
Answer: C
35.
Water is absorbed by roots in plants and transported to the leaves through the
chlorophyll.
phloem.
stomata.
xylem.
Answer: D
TRANSPORT SYSTEM IN PLANTS

36.
The gas produced when glucose is oxidized during internal respiration is
carbon (II) oxide.
Carbon (IV) oxide.
hydrogen.
nitrogen.
Answer: B
37.
Which of the following organisms is an ecto-parasite of animals?
Fleas
Tapeworm
Liver fluke
Roundworm
Answer: A
Ectoparasite: parasites that live on the surfaces of host organisms or in the skin and do not invade the inner body
Examples of ectoparasites
Fleas, head lice and bed bugs
Endoparasite
Endoparasites are parasites which live inside a host and generally inhabit areas such as the gut, lungs, heart and blood vessels.
Examples of endoparasites
Tapeworm, fluke and roundworm
38.
Which of the following is evidence that particles in gases move faster than those in liquids and solids?
I. The scent of a perfume fills a room when its container is opened
II. Smoke spreads over a large area as burning takes place
III. The wind blows fast when it is about to rain
Answer: D
39.
Arteries are blood vessels which carry
blood to the heart.
carbon dioxide to the air.
blood away from the art.
oxygen to the lungs.
Answer: C
40.
Which of the following farm animals is/are housed in a hutch?
I. Goats
II. Pigs
III. Rabbits
I only
III only
I and II only
II and III only
Answer: B
(a)
(i)
What is a vector of a disease?
(ii)
State two methods each by which the vectors of the following diseases can be destroyed:
(α)
river blindness;
(β)
malaria.
(b)
Write down the systematic names of the following compounds:
(i)
CaCo3;
(ii)
FeS;
(iii)
NaCl;
(iv)
NaOH.
(c)
(i)
Give the two properties that are common to all states of matter.
(ii)
In an experiment to determine the density, a stone of mass 60 g is put into a bowl containing water. If the level of the water rises from 60 cm3 to 75 cm3, determine the density of the stone.
(a)
(i)
A vector is an agent/organism that transmits/spreads disease causing organisms/pathogens from diseased organisms to healthy ones.
(ii)
(α)
Methods used to destroy the vector of river blindness
1. Spraying the banks of rapidly moving rivers to kill the black fly/adult/larvae
2. Clearing the bushes and vegetation along the banks of rapidly moving rivers to destroy breeding places of the black fly
(β)
Methods used to destroy the vector of malaria
1. Spraying to kill the adult mosquitoes/larvae
2. Pouring oil on stagnant water to suffocate larvae of mosquito
3. Stocking rivers and ponds with the type of fish that feeds on mosquito larvae
4. Draining stagnant water to stop breeding of mosquitoes
5. Treat mosquito net to kill mosquitoes
6. Clearing bushes around the house
(b)
(i)
Systematic name of CaCo3
Calcium trioxocarbonate (IV)
(ii)
Systematic name of FeS
Iron (II) sulphide
(iii)
Systematic name of NaCl
Sodium chloride
(iv)
Systematic name of NaOH
Sodium hydroxide
(c)
(i)
Properties that are common to all states of matter
1. Matter occupies space/has volume
2. Matter has weight/mass
(ii)
Density =
Mass = 60 g
Volume = Final Volume - Initial Volume
Volume = 75 cm3 - 60 cm3
Volume = 15 cm3
Density =
Density = 4 gcm-3
a)
Name four weather measuring instruments.
b)
Name the stages in the life cycle of a mosquito.
c)
i)
List two properties of water.
ii)
Explain why it is advisable to wash clothes with soft water.
d)
State three ways in which soil profile is important.
a)
Weather measuring instruments
1. Rain gauge
2. Thermometer
3. Wine vane
4. Anemometer
5. Barometer
6. Hygrometer
7. Sun dial
8. Sunshine recorder
9. Weather satellite
b)
Stages in the life cycle of a mosquito
1. Eggs
2. Larvae/Larva
3. Pupa/pupae
4. Imago
c)
i)
Properties of water
1. Made up of hydrogen and oxygen
2. Tasteless/insipid
3. Odourless
4. Boils at 100oC
5. Density: 1,000 kg/m3 or 1g/cm3
6. Colourless
7. Freezes at 0oC
8. A universal solvent
9. Neutral/pH 7
10. Exist as solid/liquid/gas
11. Polar
12. Expands anomalously/irregularly
ii)
Why clothes are washed with soft water
1. Use less soap
2. Clothes remain soft
3. Will be able to completely rinse the soap out of the clothes
4. Clothes keep their colour/brightness
d)
Importance of soil profile
1. It helps to get insight into soil fertility
2. It determines the suitability for agriculture production
3. It helps to select good soil for the crop
4. It determines depth at which tillage implements must be set or type of tool to use
5. To know soil management practices to adopt
6. It helps to determine type of crop to grow
7. It determines type of structure to be built
(a)
(i)
Name the gas which is used in both rusting and burning
(ii)
State two ways in which rusting can be prevented in everyday life.
(b)
Classify each of the following items as element, compound, mixture or colloid:
(i)
Sodium chloride
(ii)
Sugar solution
(iii)
Fog
(iv)
Hydrogen
(v)
Sulphur
(c)
(i)
Use any three of the following to form a food chain:
Man, bird, green grass, goat, grasshopper
(ii)
Name two diseases that can be controlled by immunization.
(d)
(i)
A boy throws a stone vertically up into the air. What are the energy changes that take place as the stone falls to the ground?
(ii)
Give two appliances which use electromagnets in their operation
(iii)
List two ways in which a magnet can lose its magnetism.
(a)
(i)
The gas which is used in both rusting and burning is oxygen
(ii)
Ways in which rusting can be prevented in everyday life
1. Painting
2. Galvanizing (electroplating)
3. Greasing
4. Oiling
5. Alloying
(b)
| Element | Compound | Mixture | Colloid |
|
Sulphur
|
Sodium chloride |
Sugar solution |
Fog |
(c)
(i)
Green grass → grasshopper → bird
OR
Green grass → goat → man
(ii)
Diseases that can be controlled by immunization
1. Tuberculosis
2. Measles
3. Poliomyelitis
4. Whooping cough
5. Diphtheria
6. Tetanus
7. Yellow fever
8. Cholera
(d)
(i)
Potential energy → Kinetic energy → Sound energy → Heat energy
(ii)
Appliances which use electromagnets in their operation
1. Telephone receivers
2. Loudspeakers
3. Electric bells
4. Burglar alarms
5. Microphones
(iii)
Ways in which a magnet can lose its magnetism
1. Heating the magnet in fire
2. Striking the magnet continuously with a hammer
3. Placing it in a solenoid through which an alternating current flows
(a)
State three ways by which the atmosphere in an industrial area is polluted.
(b)
(i)
Write the word equation for each of the following reactions between:
(α)
calcium and oxygen
(β)
nitrogen and hydrogen
(ii)
State the hazard that could be prevented when each of the following protective materials are used in the laboratory:
(α)
gas mask
(β)
goggles
(c)
If a cuboid of weight 100 N, has sides 5 cm by 10 cm, calculate the:
(i)
Area of the cuboid;
(ii)
Pressure exerted by the cuboid when it lies on its side.
(d)
(i)
Explain the term mixed farming.
(ii)
State two advantages of mixed farming.
(a)
Ways by which the atmosphere in an industrial area is polluted
1. Release of carbon dioxide from engines
2. Release of carbon monoxide from engines
3. Release of smoke into the atmosphere
4. Emission of radiations
5. Emission of heat
6. Release of dust from factories
7. Release of poisonous/acidic gases/nitrogen oxide/hydrogen sulphide
8. Release of exhaust fumes from vehicles or engines
(b)
(i)
Reactions between:
(α)
Calcium and oxygen
Calcium + Oxygen → Calcium oxide
(β)
Nitrogen and hydrogen
Nitrogen + Hydrogen → Ammonia
(ii)
Hazard that could be prevented when protective materials are used in the laboratory
(α)
Gas mask
Inhaling of toxic or poisonous gas
(β)
Goggles
Injury to the eye
(c)
Weight (Force) = 100 N
Breadth = 5 cm
Length = 10 cm
(i)
Area of a cuboid = Length x Breadth
Area = 5 cm x 10 cm = 50 cm2
(ii)
Pressure =
Pressure = = 2 Ncm-2
(d)
(i)
Mixed farming is the growing of crops as well as livestock, animal husbandry,etc all on same farm or land at the same time.
(ii)
Advantages of mixed farming
1. Animal droppings are used as manure for cultivating crops
2. Crops residue is used to feed the animals
3. Land is effectively used
4. Labour is effectively used throughout the year
5. Animals may provide power on the farm
6. Reduces risk of losing everything when diseases strikes or bad weather
7. Brings reliable sources of income
8. Reduces dependency on external inputs and costs
9. It enhances the productivity of the farmland
a)
Classify the following chemical substances basd on their uses under the headings as shown in the table below: Milk of magnesia, alcohol, paracetamol, sodium hydroxide, N.P.K.
| Agricultural | Industry | Medicine |
b)
State one use each of the following instruments used in the study of the weather:
i)
rain gauge;
ii)
hygrometer;
iii)
anemomoter.
c)
i)
Name two types of transistors.
ii)
Draw and label the circuit symbols of the transistors named in (i).
d)
State three reasons why vegetable farming is important.
a)
| Agricultural | Industry | Medicine |
N.P.K |
Sodium hydroxide
|
Milk of magnesia
|
b)
i)
Use of rain gauge
It imeasures the amount of rainfall
ii)
Use of hygrometer
It measures humidity/relative humidity
iii)
Use of anemomoter
It measures wind speed.
c)
i)
Types of transistors
1. NPN transistor
2. PNP transistor
ii)
Circuit symbols of NPN transistor

Circuit symbols of PNP transistor

d)
Reasons why vegetable farming is important
1. It serves as a source of income to farmers
2. It serves as a source of employment to people
3. Their produce contain nutrients(carbohydrates, vitamins and mineral salts) which are needed by the human body for normal growth
4. Some vegetables produced from farming contain medicinal substances that treat or control various diseases
5. Some vegetables contain proteins which are used for repair and replacement of worn out cells/tissues
6. Some vegetables produced from farming contain high amount of cellulose/roughage material that prevent constipation
7. It serves as source of food
a)
The diagrams below are illustrations of an experiment in the laboratory using a piece of stone, a cork of mass 4.0 g and other necessary materials.

The initial volume of water in A was read and noted. A string was attached to a piece of stone and the stone lowered gently into the water as shown in B. The volume was again read and noted. Finally, the cork of mass 4.0 g was attached to the stone and both materials lowered gently into the water as shown in C. The volume was read and noted.
i)
Why did the level of the water rise when the stone was lowered gently into it as shown in diagram B.
ii)
Why was it necessary to attach the stone to the cork before lowering it gently into the water as shown in diagram C?
iii)
What would have happened if the cork alone were lowered gently into the water?
iv)
What is the volume of the
α)
stone?
β)
cork?
v)
Calculate the density of the cork.
vi)
Why were the materials lowered gently in to the water?
b)
A salt solution was prepared in the laboratory using the set of apparatus illustrated below. Study the illustrations carefully and used them to answer the question that follow.

i)
Name each of the apparatus labelled I, II, III, IV and V.
ii)
State one function of each of the apparatus labelled I, II, III, IV and V.
c)
The diagram below is an illustration of the external features of a flowering plant.
Study it carefully and use it to answer the questions that follow.

i)
Name the parts labelled I, II, III, IV, V and VI.
ii)
State one function of each of the parts labelled I, II, III, V and VI.
iii)
State the two main parts of a flowering plant.
d)
The diagram below is an illustration of a small farm animal.

i)
Identify the animal.
ii)
Name each of the parts of the animal labelled I, II, III, IV, V and VI.
iii)
Name the structure in which the animal is kept.
iv)
Mention three breeds of the animal.
v)
State two management practices to be adopted in order to control diseases and pests in the rearing of the animal.
a)
i)
The stone displayed water
OR
The stone occupied space
OR
The volume of the stone was added to the water
ii)
The cork would float
OR
The stone acts as a sinker
iii)
The cork will move up again
OR
The cork will float
iv)
Volume = Final Volume - Initial Volume
α)
Volume of stone = 38 cm3 - 20 cm3 = 18 cm3
β)
Volume of cork = 40 cm3 - 38 cm3 = 2 cm3
v)
Density =
Density of cork =
Mass of cork = 4 g
Volume of cork = 2 cm3
Density of cork =
Density of cork = 2 gcm-3
vi)
To avoid splashing/spilling of water
b)
i)
I → Volumetric flask
II → Beaker
III → Funnel
IV → Stirring rod/Stirrer
V → Wash bottle
ii)
I → Used to prepare standard solution or prepare solution of known/given volume
II → Used to dissolve the solute/It could also be used to hold solution.
III → Transfer liquid/solution into the flask
IV → To stir or mix the solution
V → The water it contains is used to top solutions up to required level without exceeding the level/It can be used to wash solution stuck to containers for effective titration experiments
c)
i)
I → Terminal bud II → Flower III → Leaf IV → Leaf stalk/petiole/node V → Stem VI → Root
ii)
Functions of I (Terminal bud)
1. Protects the growing regions
2. Develops into flower
Functions of II (Flower)
1. For reproduction
2. Fruit formation
3. For pollination
Functions of III (Leaf)
1. For photosynthesis/absorption of sunlight
2. For transpiration
3. For exchange of gases between the atmosphere and the plant
Functions of V (Stem)
1. Holds leaves/flowers to perform their functions
2. Transports/conducts water to parts of plant
3. For Storage of food
Functions of VI (Root)
1. Absorption of nutrients/water from the soil
2. Holds/Anchors plant firmly in the soil
3. Stores excess food in some plants
iii)
Main parts of a flowering plant
Shoot (system)
Root (system)
d)
i)
Rabbit
ii)
I → Ear/Pinna
II → Cleft lip
III → Belly
IV → Hind limb
V → Tail
VI → Rump
iii)
Hutch
iv)
Breeds of rabbit
1. Dutch
2. Chinchilla
3 Rose
4. English
5. Beveren
6. Belgian
7. New Zealand
8. Chin Ginganta
9. Flenish Giant
10. Polish
11. New Zealand Red
12. Angora
13. California White
14. Florida White
15. Havana
16. Lilac
17. Lop
18. Rex
19. Spanish (Giant)
20. Continental Giant
21. Cinnamon
22. Silver
v)
Management practices to be adopted in order to control diseases and pests in the rearing of rabbit
1. Regular vertinary services
2. Provide good drinking water
3. The hutch should be cleaned regularly
4. The feeder should be washed
5. Disinfectant should be used
6. Dry feed should be given to the animal
7. Recommended pesticides should be used to control pests
8. Separate/isolate sick animals from healthy ones