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2003 PAST QUESTIONS, Essay

1 (a)

(i) Define photosynthesis.
(ii) Give two ways in which photosynthesis is important to animals.

1 (b) Name three sources of chemical energy.

1 (c) Describe how you would separate a mixture of sodium chloride and sand.

1 (d) Complete and balance the following equation:

CaCO3 + HCl →

1 (e) Two dry cells, a switch and a bulb are connected in series. Draw and label a circuit diagram of the arrangement.


2 (a) State two precautions that should be taken to prevent the spread of each of the following diseases:

(i) Cholera
(ii) Smallpox

2 (b) Describe how you would test for starch in a leaf.

2 (c)

(i) Explain why an inclined plane is classified as a machine.

(ii) Give two reasons why the output energy of a machine is always less than the input energy.

2 (d) Draw and label the structure of an atom containing three electrons. Indicate the charges of the particles.[/su_spoiler]


3 (a) Name the two processes that lead to the formation of seeds in a flowering plant.

3 (b)

(i) Give five components of blood.
(ii) State three functions of blood.

3 (c)

(i) What is an electrical insulator?

(ii) Mention three examples of insulator

(iii) Give two characteristics of an insulator that explain its behavior.

3 (d) Classify the following substances under the three states of matter: petrol, palm oil, soap, carbon dioxide, corn flour, smoke.


4 (a)

(i) What is a deficiency disease?

(ii) Give two deficiency diseases and their causes.

4 (b)

(i) State the importance of excretion in living organisms.

(ii) Name two excretory organs of the human body and the substances they excrete.

4 (c)

(i) Explain why gases are more compressible than solids.

(ii) Give two areas where the compressible nature of a gas is applied.

4 (d) A piece of stone is dropped from a height to the ground. State the energies possessed by the stone

(i) just before it was released from the maximum point;

(ii) midway between the fall;

(iii) just before it hit the ground

2003 PAST QUESTIONS, Objective Test

1. The method used to separate an insoluble solid from a liquid is

A. crystallization
B. distillation
C. filtration
D. sublimation

2. The scent of a perfume sprayed at one corner of a room fills the entire room through

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

3. Which of the following processes is a physical change?

A. Rusting of iron
B. Burning of wood
C. formation of water from hydrogen and oxygen
D. Solidification of water into ice

4. Atoms of the same elements have the same

I. number of electrons
II. number of protons
III. Chemical properties

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

5. The unit of measurement of energy is

A. joule
B. kelvin
C. newton
D. watt

6. Which of the following energy transformation takes place at a hydroelectric power station?

A. Potential energy → kinetic energy → electrical energy
B. Potential energy → sound energy → electrical energy
C. Kinetic energy → electrical energy → light energy
D. Electrical energy → light energy → heat energy

7. A drawing of magnetic lines of force provides information on the

A. source of the field
B. type of magnet
C. strength of the field
D. length of the magnet

8. A bottle of water removed from a refrigerator soon becomes covered with droplets of water because the

A. bottle is porous
B. bottle is full of water
C. water in the surrounding atmosphere is colder than the water in the bottle
D. water in the surrounding atmosphere is warmer than the water in the bottle

9. The volume of a metal ball was determined by dropping it into a measuring cylinder containing 20cm3 of water and the water level rose to 35cm3. If the mass of the ball is 35g, calculates the density.

A. 1.0g cm−3
B. 1.6g cm−3
C. 1.8g cm−3
D. 2.3g cm−3

10. A boy stepped on a banana peel on the ground and fell because the

A. boy was not wearing shoes
B. ground was too hard
C. banana peel reduced the friction on the ground
D. banana peel increased the friction on the ground


11. Which of the following conditions describes a first class lever?

A. The load is between the effort and pivot
B. The pivot is between the effort and the load
C. The effort is between the pivot and the load
D. The load arm is equal to the effort arm

12. A man did 75 J work by lifting a 50 N load from the floor on to a shelf. Calculate the height of the shelf.

A. 0.67 m
B. 1.50 m
C. 25.00 m
D. 125.00 m

13. The lion is a carnivore because it eats

A. flesh
B. grass
C. fruits
D. uncooked food

14. The structure which helps a fish to breathe under water is the

A. gill
B. air sac
C. operculum
D. mouth

15. The thorns found on some plants are used for

A. breathing
B. protection
C. absorbing water from the air
D. resisting bush fires

16. The following characteristic are features of all living things except ability to

A. bring forth young ones
B. excrete
C. grow
D. move from place to place

17. Which of the following parasites lives on field animals?

A. Aphid
B. Plasmodium
C. Tick
D. Tapeworm

18. The greatest danger faced by mammals living on land is

A. becoming too cold
B. becoming too hot
C. losing water through evaporation
D. gaining too much water through absorption

19. The insect responsible for the spread of malaria is the

A. female anopheles mosquito
B. housefly
C. male anopheles mosquito
D. tsetse-fly

20. Which of the following substances is added to the soil to reduce it acidity?

A. Charcoal
B. Humus
C. Lime
D. Manure


The figure below shows the arrangement of parts of the soil when some soil sample was shaken with water in a glass cylinder and allowed to settle.

Use it to answer Questions 21 and 22.

2003-waec-bece-science-objectives-q21

21. Which of the labelled layers contains organic matter?

A. M
B. N
C. O
D. P

22. The layer which does not have the ability to retain water is

A. N
B. O
C. P
D. Q

23. Which of the following characteristics applies to only plants?

A. Excretion of waste materials
B. Response to stimuli
C. Ability to manufacture food from simple substances
D. Ability to respire

24. The waste products of respiration are

A. glucose and oxygen
B. carbon dioxide and water
C. carbon dioxide and heat
D. oxygen and water

25. The function of the lungs is to

A. maintain a constant amount of water in the body
B. absorb oxygen from the body
C. absorb carbon dioxide from the blood
D. maintain the temperature of the body constant

26. Which of the following plants reproduce(s) vegetatively?

I. Banana
II. mango
III. Ginger

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

27. The process which takes place in all living cells is

A. digestion
B. fertilization
C. photosynthesis
D. respiration

28. The food substance found in yam is

A. carbohydrate
B. oil
C. protein
D. vitamin

29. The end-products of the digestion of fats and oils are

A. amino acids and glucose
B. amino acids and glycerol
C. fatty acids and glycerol
D. fatty acids and amino acids

30. Which of the following factors promote plant germination?

I. Adequate temperature
II. Moisture
III. Good soil

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


31. The female part of a flower is the

A. calyx
B. pistil
C. petal
D. stamen

32. Which of the following substances breaks down fats into tiny droplets during digestion?

A. Bile
B. Gastric juice
C. Pancreatic juice
D. Saliva

33. Blood in the urine is a symptom of

A. Bilharzia
B. Cholera
C. Gonorrhoea
D. Typhoid

34. A free movement of the bowels is aided by

A. sleeping at least 6 hours a day
B. washing one's body at least twice a day
C. eating fatty foods
D. eating foods containing fibre

35. Which of the following diseases is spread through the air?

A. AIDS
B. Measles
C. Typhoid
D. Yaws

36. How many days in a month does the moon appear?

A. 7 days
B. 14 days
C. 21 days
D. 28 days

37. The earth moves completely round the sun once in every

A. 1 day
B. 28 days
C. 30 days
D. 365 days

38. A smaller heavenly body, which orbits a bigger one could be described as a

A. comet
B. meteor
C. moon
D. sun

39. Which of the following parasites is a plant?

A. Aphid
B. Dodder
C. Flea
D. Jigger

40. Which of the following substances is not a constituent of a balanced diet?

A. carbohydrate
B. Protein
C. Table salt
D. Vitamin