WASSCE 2017 Integrated Science Past Questions and Answers
The WASSCE 2017 Integrated Science paper has 49 objective and 10 theory questions. Here are sample objective questions with the correct answers and explanations. Sit the full paper with the real time limit on ePrep.
Sample questions with answers
1. The volumetric flask is used in the laboratory to
- A. prepare standard solution.
- B. separate a mixture of immiscible liquids.
- C. carry out simple distillation.
- D. dry substances.
Answer: A. prepare standard solution.
Answer: A. A volumetric flask is marked to hold one exact volume, so it is used to make up standard solutions of known concentration. Immiscible liquids are separated with a separating funnel.
Answer: A. A volumetric flask is marked to hold one exact volume, so it is used to make up standard solutions of known concentration. Immiscible liquids are separated with a separating funnel.
2. The internal diameter of a wedding ring could be measured most accurately using a
- A. half-metre rule.
- B. tape measure.
- C. micrometer screw gauge.
- D. vernier callipers.
Answer: D. vernier callipers.
Answer: D. Vernier callipers (inside jaws) measure an internal diameter accurately.
Answer: D. Vernier callipers (inside jaws) measure an internal diameter accurately.
3. Which of the following organisms transmits the protozoa which causes trypanosomiasis in cattle?
- A. Louse
- B. Mosquito
- C. Tick
- D. Tsetse fly
Answer: D. Tsetse fly
Answer: D. The tsetse fly transmits trypanosomes to cattle.
Answer: D. The tsetse fly transmits trypanosomes to cattle.
4. Biological control of malaria involves
- A. draining breeding grounds of mosquitoes.
- B. spraying surfaces on which mosquitoes settle with insecticides.
- C. introducing fish into ponds to feed on larvae of mosquitoes.
- D. burying empty cans.
Answer: C. introducing fish into ponds to feed on larvae of mosquitoes.
Answer: C. Biological control uses living things: fish that eat mosquito larvae.
Answer: C. Biological control uses living things: fish that eat mosquito larvae.
5. Water is referred to as universal solvent because it
- A. dissolves most substances.
- B. changes blue litmus solution to red.
- C. reacts with base to produce salt.
- D. has pH of 7.
Answer: A. dissolves most substances.
Answer: A. Water is the universal solvent because it dissolves most substances.
Answer: A. Water is the universal solvent because it dissolves most substances.
6. The heat energy needed to convert a quantity of liquid at its boiling point to vapour is referred to as
- A. latent heat of fusion.
- B. specific latent heat of fusion.
- C. latent hat of vaporization.
- D. specific latent heat of vapourization.
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7. A feeding association in which one partner benefits while the other loses is known as
- A. commensalism.
- B. mutualism.
- C. parasitism.
- D. symbiosis.
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9. Which of the following activities could control fungal diseases in a backyard garden?
I. Planting resistant varieties
II. Practicing good farming sanitation
III. Destroying affected plants by burning
I. Planting resistant varieties
II. Practicing good farming sanitation
III. Destroying affected plants by burning
- A. I only
- B. I and II only
- C. II and III only
- D. I, II and III
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10. The contraction of the biceps muscle in humans is likely to result in
- A. straightening of the forearm.
- B. bending of the forearm.
- C. contraction of the triceps.
- D. movement of the scapula towards the sternum.
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11. Alpha decay involves the emission of
- A. electrons.
- B. neutrons.
- C. helium nuclei.
- D. gamma rays.
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