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BECE SCIENCE 2000

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OBJECTIVE TEST

1.

Which pf the following organs is used by the fish for movement?

A.

Eye

B.

Fin

C.

Gill

D.

Tail

E.

Mouth

2.

A group of stars found in the universe is called

A.

galaxy.

B.

meteor.

C.

meteorite.

D.

planet.

E.

solar system.

3.

The basic unit of matter is the

A.

atom.

B.

compound.

C.

element.

D.

electron.

E.

ion.

4.

Which of the following processes is a physical change?

A.

Rusting of iron

B.

Burning of paper

C.

Melting of ice

D.

Fermentation of palm wine

E.

Boiling of an egg

5.

The organ that removes metabolic wastes from the human body is

A.

anus.

B.

heart.

C.

kidney.

D.

rectum.

E.

spleen.

6.

The food chain that occurs in nature is

A.

green plans → lizards → insects → snakes

B.

grasshopper → green plants → lizards → hawks

C.

green plants → snakes → hawks → man

D.

green plants → grasshopper → lizards → snakes

E.

mice → lizards → hawks → snakes

7.

The device that uses an electromagnet in its operation is the

A.

electric bell.

B.

electric iron.

C.

radio.

D.

refrigerator.

E.

sewing machine.

8.

Which of the following statements about mammals is true?

A.

They have hairs

B.

They lay eggs

C.

They have feathers

D.

They have beaks

E.

They are cold blooded

9.

The parasite that is found on dogs is

A.

capsid.

B.

guinea worm.

C.

plasmodium.

D.

tapeworm.

E.

Tick.

10.

The substance that sublimes when heated is

A.

baking powder.

B.

camphor.

C.

common salt.

D.

sugar.

E.

Sulphur.

11.

In plants when the male gamete fuses with the egg, the first structure that is formed is the

A.

embryo.

B.

testa.

C.

fruit.

D.

seed.

E.

zygote.

12.

Clayey soil holds more water than any other type of soil because it has

A.

large particle size.

B.

large air spaces.

C.

irregular particle size.

D.

greater attraction for water.

E.

reduced air spaces.

13.

Disposal of urine and faeces into a river used for domestic purposes, may cause the outbreak of

A.

bilharzia.

B.

malaria.

C.

river blindness.

D.

tetanus.

E.

tuberculosis.

14.

The temperature of 20oC on the kelvin scale is

A.

253 K.

B.

263 K.

C.

273 K.

D.

283 K.

E.

293 K.

15.

The heavenly body that produces and emits its own light is

A.

Mars.

B.

meteorite.

C.

the moon.

D.

the sun.

E.

Venus.

16.

Desert plants shed their leaves to reduce the rate of

A.

absorption of minerals.

B.

diffusion.

C.

osmosis.

D.

respiration.

E.

transpiration.

17.

Which of the following materials transforms electrical energy into light energy?

A.

Electric bell

B.

Filament bulb

C.

Electric guitar

D.

Lantern

E.

Radio

18.

The name of the smallest blood vessel in humans is

A.

artery.

B.

arteriole.

C.

capillary.

D.

vein.

E.

venule.

19.

Which of the following activities is a reflex action?

A.

Eating

B.

Fighting

C.

Learning

D.

Sneezing

E.

Writing

20.

The method of separation used in the treatment of water at the water works is

A.

decantation.

B.

distillation.

C.

evaporation.

D.

magnetization.

E.

precipitation.

21.

The gas produced when dilute hydrochloric acid is added to calcium carbonate is

A.

ammonia.

B.

carbon dioxide.

C.

chlorine.

D.

hydrogen.

E.

oxygen.

22.

Which of the following environmental factors increases sweating in humans?

A.

Low temperature

B.

Low pressure

C.

High pressure

D.

High temperature

E.

High humidity

23.

Which of the following crops is propagated vegetatively?

A.

Cassava

B.

Coconut

C.

Mango

D.

Okro

E.

Tomato

24.

The type of energy stored in food is referred to as

A.

chemical energy.

B.

electrical energy.

C.

heat energy.

D.

kinetic energy.

E.

light energy.

25.

The end product of protein digestion is

A.

amino acid.

B.

glucose.

C.

maltose.

D.

poly-peptide.

E.

sucrose.

26.

The attracting power of magnets is greatest at the

A.

centre.

B.

edges.

C.

poles.

D.

sides.

E.

surface.

27.

The substances which help in the digestion of food materials are called

A.

enzymes.

B.

hormones.

C.

lymph.

D.

mucus.

E.

plasma.

28.

The transfer of heat through a solid medium is by

I. conduction
II. convection
III. radiation

A.

I only

B.

II only

C.

III only

D.

I and II only

E.

II and III only

29.

Casual and loose sex life can result in the spread of

A.

AIDS.

B.

cholera.

C.

poliomyelitis.

D.

malaria.

E.

tuberculosis.

30.

Which of the following conditions will cause the same quantity of sugar to dissolve faster in a given volume of water?

A.

Stirring the solution

B.

Grinding the sugar

C.

Heating the solution

D.

Dissolving in a bigger container

E.

Cooling the solution

31.

The raw material for photosynthesis is

A.

carbon dioxide.

B.

chlorophyll.

C.

mineral salts.

D.

oxygen.

E.

sunlight.

32.

Which of the following heavenly bodies is at the centre of the planetary system?

A.

Earth

B.

Mercury

C.

Pluto

D.

Sun

E.

Venus

33.

Legumes are generally included in crop rotation because they

A.

are easy to uproot in preparation for the next planting season.

B.

are able to fix atmospheric nitrogen in the soil.

C.

have short life span.

D.

are good cover crops.

E.

have high market value.

34.

The insect which transmits the plasmodium parasite is called

A.

butterfly.

B.

cockroach.

C.

housefly.

D.

mosquito.

E.

tsetse fly.

35.

The property of water that causes mosquito larvae to float on it is

A.

density.

B.

viscosity.

C.

surface tension.

D.

volume.

E.

capillarity.

36.

Which of the following practices is a bad habit?

A.

keeping one's surroundings tidy

B.

Drinking clean water

C.

Covering one's food

D.

Using a brother's towel and comb

E.

Washing of hands before eating

37.

Addition of more solvent to a solution makes the solution more

A.

dense.

B.

dilute.

C.

concentrated.

D.

saturated.

E.

super saturated.

38.

An atoms has 4 protons and 5 neutrons in its nucleus. How many positively charged particles are in the atom?

A.

1

B.

2

C.

3

D.

4

E.

5

39.

Which of the following statements about all living things is/are true?

I. They respire
II. They manufacture their own food
III. They grow

A.

I only

B.

II only

C.

I and II only

D.

I and III only

E.

II and III only

40.

Spectacles with converging lenses are used by people suffering from

A.

cataract.

B.

glaucoma.

C.

headache.

D.

long-sightedness.

E.

short-sightedness.

THEORY QUESTIONS

1.

a)

i)

What is personal hygiene?

ii)

List four ways by which personal hygiene could be maintained

b)

Define each of the following terms and give two examples in each case:

i)

compound

ii)

mixture

c)

i)

What is a machine?

ii)

Give one example each of a

α)

first class lever

β)

second class lever

γ)

third class lever

d)

i)

What is a satellite?

ii)

State one use of satellite

Show Solution
2.

a)

What is an electrostatic force?

b)

i)

State the unit of

α)

force

β)

work

ii)

A body of mass 80 kg is lifted vertically through a distance of 5.0 m.

Calculate the work done on the body.

[g = 10 ms-2]

c)

Describe briefly how a mixture of common salt and powdered sulphur could be separated.

d)

State three characteristics each of

i)

an insect pollinated flower

ii)

a wind pollinated flower

Show Solution
3.

a)

i)

What is fertilization

ii)

Describe briefly the processes that lead to fertilization in humans after mating.

b)

i)

Define the term density

ii)

Describe briefly how the density of a piece of stone could be determined

c)

i)

What is an element?

ii)

Classify each of the following substances as an element, compound or mixture: Water, air, potassium, alcohol, common salt, sugar

Show Solution
4.

a)

Define each of the following terms:

i)

alloy

ii)

diffusion

iii)

colloid

b)

Give two examples each of:

i)

alloy

ii)

colloid

c)

i)

What is pollution?

ii)

List two pollutants each of:

α)

air

β)

water

γ)

land

d)

A coconut of weight 50 N hangs 15 m above the ground.

i)

Name the type of energy possessed by the coconut.

ii)

Calculate the value of this energy

Show Solution

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