BECE JHS Integrated Science 2018 Past Questions

The space occupied by matter is its

(a) The diagram below is an illustration of a fish
Study the diagram carefully and answer the questions that follow
INSERT i2018b1a

(i) Identify the fish
(ii) Name each of the parts labelled I, II, IV, V
(iii) Name the habitat of the fish
(iv) Explain how each of the parts labelled III and VI enables the fish adapt to its habitat.

(b) The diagram below is an illustration of a section through the soil.
Study the diagram carefully and answer the questions that follow.
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(i) What does the diagram represent?
(ii) Name each of the parts labelled I, II, III, IV
(iii) Which part of the diagram:
(α) is the richest in humus?
(β) is the habitat for soil organisms?
(γ) undergoes weathering?
(iv) What is the effect of heavy rainfall on the part labelled I?

(c) The diagram below is an illustration of an electrical circuit.
Study the circuit and answer the questions that follow.
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(i) Name each of the parts labelled I, II, IV, VI
(ii) State the energy transformation that takes place in:
(α) I
(β) IV
(iii) State the S.I. units of the quantity measured by each of the parts labelled
(α) III
(β) V
(iv) State the function of the part labelled VI

(d) In an experiment, equal volumes and equal concentrations of dilute hydrochloric acid and dilute sodium hydroxide solutions were each placed in different test tubes.
Read the following statements carefully
I. Both red and blue litmus papers were dipped into each of the solutions in turns.
II. Equal volumes of the solutions were mixed to obtain a third solution.
III. Both red and blue litmus papers were dipped into the third solution.
Use the information provided to answer the following questions.

(i) Explain briefly how you can identify each of the solutions.
(α) Hydrochloric acid;
(β) Sodium hydroxide.
(ii) State the type of reaction that occurred when the two solutions were mixed.
(iii) What type of solution was formed when the reaction stated in (ii) occurred?
(iv) State what would be observed when both red and blue litmus papers were dipped into the third solution.
(v) Explain how the solid portion of the solution named in (iii) could be obtained.

Which of the following structures contain cellulose?

(a) (i) What is an ion?
(ii) State two methods of softening hard water.

(b) (i) Differentiate between pests and parasites as used in agriculture.
(ii) Give an example each of a:
(α) pest;
(β) parasite

(c) (i) What is work?
(ii) A force of 10 N causes a body to move a distance of 5.2 m in the direction of the force. Calculate the work done.

(d) Name two diseases associated with the circulatory system of humans

Which of the following activities are cultural practices used in tomato cultivation?
I. Pest control
II. Pricking out
III. Fertilizer application

(a) (i) What is malnutrition?
(ii) State one symptom each of the following deficiency disease:
(α) scurvy;
(β) rickets.

(b) Draw the potassium atom and show the distribution of electrons in its shells.
[K = 19]

(c) (i) Define potential energy
(ii) An object of mass 10 kg is moving at a velocity of 2 ms–1 .
Calculate the kinetic energy of the object

(d) State one example each of :
(i) macro nutrients;
(ii) micro nutrients.

The farming system that makes effective use of available soil nutrients in a growing season is

(a) (i) Explain the term hazard.
(ii) List two safety precautions against hazards in the teaching and learning of science.

(b) In a tabular form state three differences between osmosis and diffusion.

(c) (i) What is weather?
(ii) State two differences between weather and season.

(d) (i) What is a fertile soil?
(ii) State two factors that cause loss of soil fertility.

Which of the following members in a food chain will receive the least energy?

(a) (i) What is a magnetic field?
(ii) Name two methods of making magnets

(b) Explain briefly the term teenage pregnancy

(c) Write the formula for each of the following compounds:
(i) calcium chloride;
(ii) copper (I) oxide;
(iii) nitrogen (IV) oxide;
(iv) ammonia

(d) (i) List three physical properties of soil.
(ii) What is the texture of clayey soil?

Digestion of fats and oils in humans starts in the

(a) (i) What are derived quantities?
(ii) State the S.I. units of the following quantities:
(α) area;
(β) volume.

(b) (i) State two factors necessary for photosynthesis
(ii) Explain the functions of each of the factors stated in (i)

(c) Explain each of the following terms:
(i) soft water;
(ii) hard water.

(d) State three reasons why some seeds are nursed.

What is the chemical symbol for silver?

The process by which gas changes to liquid is known as

Which of the following substances is acidic?

The basic unit of life is the

Useful materials in food that provide growth and repair of worn out tissues are called

In human reproduction, the sperm fertilizes the female egg to form the

```Use the information below to answer questions 13 to 15
A solid X reacted with a liquid Y to form a salt and water only. A portion of liquid Y turned blue litmus paper red. Solid X did not dissolve when a portion of it was placed in water and stirred.```
Solid X could be said to be

```Use the information below to answer questions 13 to 15
A solid X reacted with a liquid Y to form a salt and water only. A portion of liquid Y turned blue litmus paper red. Solid X did not dissolve when a portion of it was placed in water and stirred.```
Liquid Y is

```Use the information below to answer questions 13 to 15
A solid X reacted with a liquid Y to form a salt and water only. A portion of liquid Y turned blue litmus paper red. Solid X did not dissolve when a portion of it was placed in water and stirred.```
If red litmus paper is placed in liquid Y, the colour of the paper will

The type of soil which becomes water-logged after rainfall is made up of a large amount of

Ringworm is a disease which attacks the

The most appropriate practice to adopt when growing vegetables in the dry season is

Which of the following organisms improves soil fertility?

The introduction of natural enemies to control pests on a field is a

A body has a density of 30 g cm–3 and volume of 6 cm3. Determine the mass of the body.

The force which tends to pull an object in a circular motion towards the centre of the circle is called

The swollen shoot disease of cocoa is caused by

The instrument used to measure atmospheric pressure is called

The systematic name of NO<sub>2</sub> is

Which of the following simple machines is a second class lever?

A cylindrical metal has radius 7 cm and height 2cm. Determine the volume of the cylinder. [Take π = 22/7]

Which of the following statements are true of compounds?
I. They are homogenous
II. Their constituents are present in fixed ratio by mass
III. Their constituents keep their individual properties

Which of the following factors contribute to early parenthood?
I. Illiteracy
II. Poverty
III. Peer pressure
IV. Lack of parental care

Which of the following statements about the negative use of Science and Technology is correct? It

Which of the following nutrients is needed by plants in small quantities?

Which of the following statements about shadow formation is correct? It shows that light rays can

The colour of the neutral wire in an electrical circuit is

A metal displaces 5.0 cm<sup>3</sup> of water when it is totally immersed. If the mass of the metal is 35.0 g, calculate its density

Which of the following physical properties of water are correct? Water
I. is a colourless liquid
II. is a universal solvent
III. boils at 100°C at standard atmospheric pressure
IV. has a density of 5 kg cm<sup>-3</sup> at 4°C

The relative proportions of the different particle sizes in a soil sample refer to soil

Which of the following chemical equations is balanced?

Heat is transferred along an iron bar by

The second stage in the life of a mosquito is the

The function of the platelets in the circulatory system of humans is to