Ghana BECE 2019 INTEGRATED SCIENCE PAST QUESTIONS AND ANSWERS

1) Steel is an alloy of iron and

2) An atom that has lost one or more electron(s) is called

3) In all machines, the efficiency is

4) In electronic circuits, LEDs are used to indicate the absence or presence of

Which of the following statements about the scientific method is/are 5) correct? It provides
I. logical procedure for arriving at knowledge.
II. knowledge that can never be changed.
III. knowledge that can never be changed.

6) Which of the following substances is a compound

Which of the following source(s) of energy is/are renewable?
I. Solar
ll. Crude oil
III. Wind

8) The pressure in fluids

9) Which of the following chemical equations is balanced?

10) Lime juice tastes sour because it is

11) A metal block has a mass of 1.0 kg. What is the volume of the block if its density is 10 kg m⁻³?

12) It is easier to move a heavy load with a crowbar when the

13) 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

14) Chlorine gas is an example of

Which of the following statements about a force are 15) correct? It
I. is measured in newtons.
II. is measured in newton-metre.
III. can start a motion.
IV. can change the direction of a moving body.

16) Kerosine is able to reach the other end of a wick by

17) Which of the following processes is used separate insoluble solids from liquids?

18) Which of the following chemical compounds is used in removing hardness in water?

19) When a thermometer is put in hot water, the mercury level rises because the mercury increases in

20) The work done when a force moves a body through a distance of 12 m is 720 J. The force applied is

21) Which of the following compounds is neutral to litmus paper?

22) A balanced diet is one which is made up of

23) The ovules in a flower develop to form the

24) The housefly is an agent for the spread of

Which of the following substances are carried by blood?
I. Nutrients
II. Urine
III. Oxygen.
IV Carbon dioxide·

26) Which of the following statements about a plant cell is correct? It

27) The study of the soil profile of an area helps the farmer to

28) The term leaching in soils refers to

29) How many stages does the mosquito go through in its life cycle of development?

Which of the following enzymes helps in the digestion of protein in the human stomach?
I. Proteases
II. Amylase
III. Lipases

31) Kidneys absorbs water from the blood stream of humans through the process of

32) An example of soil micro-nutrients is

33) The vegetable crop that requires it staking during its growth is

34) The function of the white blood cells in human is to

35) The carpel of a flower is made up of the following parts except

36) The food wed shows how

37) Balanced ration enables animals to

38) Cultural practices are activities undertaken on a farm

39) Digestion of fats and oils in humans starts in the

Which of the following effects are caused by rusting?
I. Loss of strength
II. Loss of structure
III. Loss of electrical conductivity