1.
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
2.
The types of energy produced when the hands are vigorously rubbed against each other are
chemical and electrical energy.
heat and sound energy.
heat and light energy.
electrical and light energy.
3.
When a thermometer is put in hot water, the mercury level rises because the mercury increases in
density.
mass.
volume.
weight.
4.
The modes of heat transfer involved in the process of heating water in a bucket, from the bottom until it boils are
conduction and convection.
conduction and radiation.
convection and radiation.
conduction, convection and radiation.
5.
Which of the following items converts chemical energy to electrical energy?
Dry cell
Electric bulb
Loudspeaker
Microphone
6.
Use the diagrams below to answer the question below
Which of the following statements is correct about the circuit diagrams above? The cells in diagram
X are in series and the key is open.
X are in parallel and the key is open.
Y are in series and the key is closed.
Y are in parallel and the key is closed.
7.
Use the diagrams below to answer the question below
The total emf of the cells in diagram Y is
4.50 V.
3.00 V.
1.50 V
0.75 V.
8.
It is easier to move a heavy load with a crowbar when the
effort distance is shorter than the load distance.
effort distance is longer than the load distance.
effort distance is equal to the load distance.
effort is equal to the load.
9.
The type of lever shown above is a
first class lever.
second class lever.
third class lever.
combination of first and second class levers.
10.
A balanced diet is one which is made up of
right proportions of protein, carbohydrates and oil.
equal amounts of protein, carbohydrates and oil.
enough water and iodated salt.
vegetables, fruits and water.
11.
Benedict's solution was added to a mixture in a test tube and it turned brick red when heated. The mixture is likely to contain
glucose.
oil.
protein.
vitamin
12.
The main food substance present in the albumen of an egg is
carbohydrate.
fat.
protein.
vitamin.
13.
One characteristics which is not common to all living things is the ability to
grow.
move about.
respire.
respond to stimuli.
14.
The ovules in a flower develop to form the
fruit.
leaves.
seeds.
stem.
15.
Onions are planted by means of
bulbs.
corms.
suckers.
rhizomes.
16.
The testis in mammals produces
blood.
lymph.
sperms.
urine.
17.
Which of the following structures takes part in human digestion?
Caecum
Kidney
Larynx
Pancreas
18.
Which of the following diseases is contracted through sex?
HIV/AIDS
Anther
Tuberculosis
Goitre
19.
Chlorine gas is an example of
an atom.
an element.
a compound.
a molecule.
20.
The bad smell that comes out of a urinal is due to the presence of
ammonia.
hydrogen.
carbon dioxide.
nitrogen.
21.
The systematic name of the compound FeS is
iron (I) sulphide.
iron (II) sulphide.
iron (III) sulphide.
iron (IV) sulphide
22.
Which of the following elements is a liquid at room temperature.
Carbon.
Mercury.
Silver.
Sulphur.
23.
The type of cloud that gives rain is
cumulus.
cirrus.
nimbus.
stratus.
24.
Water drains faster through sand than clay because
sand particles are rougher.
sand contains more air spaces.
clay particles are smoother.
clay particles are bigger.
25.
Which of the following organisms is not an animal parasite?
Tick
Tapeworm
Plasmodium
Weevil
26.
The housefly is an agent for the spread of
cholera.
malaria.
measles.
tuberculosis
27.
The best method for checking erosion on a slope is
cover cropping.
mixed cropping.
contour ploughing.
mulching.
28.
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.
29.
The process whereby soil is formed by the breakdown of rocks is called
composting.
erosion.
leaching.
weathering.
30.
Kerosene is able to reach the other end of a wick by
diffusion.
suction pressure.
capillary action.
osmosis.
31.
The force, which opposes the motion of one body on another body is called
adhesion.
cohesion.
friction.
tension.
32.
The work done when a force moves a body through a distance of 12 m is 720 J. The force applied is
8640 N
732 N
708 N
60 N
33.
Food substances are transported from the leaves to various parts of a plant through the
cambium.
epidermis.
phloem.
xylem.
34.
Which of the following substances are carried by the blood?
I. Nutrients
II. Urine
III. Oxygen
IV. Carbon dioxide
II and III only
I, II and IV only
I and III only
I, III and IV only
35.
A uniform mixture of two or more metals is called
an alloy.
a coiled.
an aerosol.
a compound
36.
Gold is usually used to make jewellery because it is
precious.
expensive.
less reactive with air.
a good conductor of heat.
37.
Which of the following substances is a non-metal?
Diamond
Mercury
Sodium
Steel
38.
Alum is added to water during treatment to
kill germs.
help suspended particles to settle.
make the water colourless.
give taste to the water.
39.
Which of the following types of water would be most contaminated by waste substances?
Rain water
Stream water
Borehole water
Pipe borne water
40.
The method of preserving food by drying is similar to salting because in both cases germs are
deprived of the air needed for growth.
deprived of the water needed for growth.
destroyed at high temperatures.
destroyed at low temperatures.
(a)
Study the simple circuit diagram shown below and answer the questions that follow.
(i)
Identify the components labelled I, II, III, IV, V and VI
(ii)
Which component is used to close the circuit?
(iii)
State the observation that will be made when the circuit is closed.
(iv)
State the energy transformations that take place when the circuit is closed
(v)
Give the name of the circuit connection between components IV and VI
(b)
The diagram below is an illustration of an experimental set-up used for separating a mixture of water and alcohol. Study the diagram carefully and answer the questions that follow.
(i)
State the method of separation shown in the set-up.
(ii)
Identify liquid Y, with reasons.
(iii)
Give the functions of the thermometer and the water jacket X
(iv)
What physical processes are involved in the method of separating the mixture?
(v)
State the physical property which makes it possible to separate the water and alcohol.
(c)
A student performed tests on food substances A, B and C and made the following observations
| Food substance | Test | Observation |
| A | Few drops of iodine solution was added to A | The iodine solution turns blue-black |
| B | A drop of B was applied to a white sheet of paper | A translucent patch was seen on the paper |
| C | Benedict's solution was added to C and the mixture boiled | Benedicts's solution turns from blue to brick-red |
(i)
Identify food substances A, B and C.
(ii)
Give the products of digestion of A, B and C
(iii)
In which parts of the alimentary canal does the digestion of each of food substances A, B and C start?
(iv)
In which part of the alimentary canal is food substance C absorbed after digestion?
a)
i)
List four parts of a plant that are used for asexual reproduction.
ii)
Give two reasons why sexual reproduction is more advantageous than asexual reproduction.
b)
i)
Explain why atoms are electrically neutral.
ii)
Write the systematic names of the following substances:
α)
CuO
β)
SO2
c)
i)
What is dispersion of light?
ii)
Draw and label a diagram of dispersion of light through a triangular glass prism.
a)
i)
What is soil erosion?
ii)
Give two types of soil erosion.
b)
Write the name and chemical formula of the compounds formed when the following elements combine:
i)
zinc and oxygen
ii)
calcium and chlorine
c)
i)
Distinguish between heat and temperature.
ii)
Draw and label the mercury-in-glass thermometer.
iii)
What mode of heat transfer is involved in the use of a thermometer?
a)
i)
What is a hormone?
ii)
Copy and complete the following table.
| Name of hormone | Organ secreting hormone | Function of hormone |
| Adrenalin | ||
| Thyroxin | ||
| Insulin |
b)
Ammonia gas is prepared in the laboratory by heating ammonium chloride and calcium hydroxide.
i)
Write a balanced equation for the reaction.
ii)
How is ammonia gas tested in the laboratory?
iii)
State one use of ammonia.
c)
i)
Name four types of forces.
ii)
A boy used a catapult to kill a bird which was on a tree and it fell to the ground.
Give two forces involved in this process.
a)
i)
Distinguish between a rhizome and a stem tuber.
ii)
Give one example each of a rhizome and a stem tuber.
b)
State the method which could be use to separate each of the following mixtures and explain your answer in each case:
i)
salt and water;
ii)
sawdust and iron filings;
ii)
powdered charcoal and water.
c)
i)
Define density of a substance.
ii)
Explain how a body which sinks in water could be made to float.
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