Ghana BECE 2020 INTEGRATED SCIENCE PAST QUESTIONS AND ANSWERS

1) Which of the following parts of the tooth is embedded in the jaw bone?

2) Which part of the human body stores sperms temporarily?

3) An advantage of soft water over hard water is that soft water

4) The work done by force of 20 N on a body is 60 J. Calculate the distance through which the force moved

5) Which of the following processes removes carbon from the atmosphere?

6) A substance which is made up of the same kind of atoms is called

Which of the following statement(s) is/are 7) true of a shadow? A shadow is formed
I. by a transparent object,
II. by an opaque object,
lll. on a screen.

8) Which of the following diseases results from malnutrition?

9) The chemical formula of an aluminum sulphide is AlᵧS₃. Determine the value of y.

Which of the following sources of energy is/are renewable?
I. Wind
II. Coal
III. Crude oil

11) Clayey soils are described as heavy because they

12) An example of a legume is

13) The process used to separate a mixture of iron filings and sulphur is

14) The colour of a soil profile determines the

15) The end-product of digestion of fats and oil is

16) The unit of potential difference is

17) A stone displaced 20 cm³ of water when immersed in the water. If the mass of the stone is 40 g, find the density of the stone.

18) One similarity of physical and chemical changes is that both

19) Which of the following elements is a macro-nutrient?

20) The process by which metabolic wastes are removed from the body is called

21) The part of the flower that produces pollen grains is the

Which of the following statement(s) about pressure in fluids is/are 22) correct? Pressure
I. decreases with depth
II. increases with depth
III. does not depend on the area

23) A boy who is seventeen years old is an

24) The mode of heat transfer in which no material is involved is known as

Which of the following factors are used to describe a fertile soil?
I. Amount of organic matter
II. Colour
III. Texture

26) The major charge carriers in p-type semiconductors are

27) The dry season in Ghana is mainly from

28) The practice that excess branches of growing plants are removed is termed

29) Which of the following soil type has the highest capillarity?

Which of the following farming practices promote soil erosion?
I. Alley cropping
II. Bush burning
III. Over grazing

31) The nearest planet to the sun in the solar system is

32) In which of the following devices is electrical energy transformed into light energy?

33) An example of a semi-metal is

34) The elements in the periodic table are arranged according to their

Which of the following states of matter are fluids
I. Solid
II. Liquid
III. Gas

36) A liquid-liquid mixture can be separated by

37) When an unknown solution reacted with magnesium, a gas was produced. Which of the following solutions could be the unknown solution?

39) The structure which enables a fish to breathe in water is

40) A fruit in which the pappus has been modified into a parachute structure is dispersed by