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THE WEST AFRICAN EXAMINATIONS COUNCIL GHANA

Basic Education Certificate Examination

Integrated Science 2013

OBJECTIVE TEST

Objective Test

Question 1

The S.I unit of temperature is

Question 2

Air is an example of

Question 3

Which of the following activities are involved in the rearing of tilapia?

Question 4

The part of the flower that contains nectar is called

Question 5

Which of the following methods protects pure iron from rusting by coating with zinc?

Question 6

Leaching of nutrients from the soil leads to soil

Question 7

The hereditary material that is passed on from parents to offspring is known as

Question 8

The solar system is made up of the

Question 9

The type of management system which allows farm animals to roam about freely is known as

Question 10

External respiration in living organisms is also known as

Question 11

A rigid bar which is capable of turning about a fixed point is a/an

Question 12

A positively charged ion is called

Question 13

One way of ensuring that organisms are not endangered is to

Question 14

A good thermometer liquid must

Question 15

Which of the following metals will produce a gas when placed in lime juice?

Question 16

The physical property of a soil which is determined by the feel method is soil

Question 17

The reason why gaps are left in the joints of railway lines is to allow for

Question 18

Which of the following effects are caused by rusting?

Question 19

Leguminous crops may often be cultivated to add

Question 20

A place where an organism can live and interbreed successfully is called

Question 21

Which of the following methods of treating water makes it soft?

Question 22

Dehusking and shelling are both activities carried out in the processing of

Question 23

Typhoid fever is transmitted through

Question 24

One advantage of friction is that it

Question 25

Sickle is a farm tool used for

Question 26

One characteristic of the image formed in a pin-hole camera is that the image is

Question 27

Transplanting of seedlings is usually done in the evening because

Question 28

Which of the following statements about molecules is/are correct? Molecules

Question 29

Fruits which are dispersed by wind are likely to be

Question 30

Which of the following materials allows electric current to pass through easily?

Question 31

Water contains two elements, hydrogen and oxygen, in the ratio of

Question 32

In the digestive system of ruminants, vitamins are synthesized in the

Question 33

The best way of protecting oneself from high blood pressure is to

Question 34

The property of metals which makes them to be easily drawn into thin wires is known as

Question 35

An atom of an element is represented as . How many neutrons are in the nucleus of the atom?

Question 36

Viable seeds are ones that

Question 37

Which of the following processes can occur at all temperatures?

Question 38

Which of the following human activities maintains the carbon cycle?

Question 39

The farming system which involves the growing of one type of crop on the same piece of land every season is known as

Question 40

The presence of chlorophyll in green plants is a necessary condition for photosynthesis because it

THEORY

ESSAY

This paper is in two parts: I and II. Answer Question 1 in part I and any other four question in part II

Question 1

Theory question 1 diagram
  1. The diagrams below are illustrations of an experiment to demonstrate a biological principle. Study the diagram carefully and answer the questions that follow. Name the parts labelled I and II. State two differences between the set-ups A and B. What is the role played by the part labelled I in the experiment? Name the biological principle being demonstrated in this experiment. State one way in which plants benefit from the principle named in (iv). State one way in which animals benefit from the principle named in (iv).
  2. In an experiment to investigate the reactivity of zinc, a piece of the metal was dropped into a test tube containing dilute hydrochloric acid. The experiment set-up is illustrated below. Study the set-up carefully and answer the questions that follow. Write a balanced chemical equation for the reaction that occurred in the experiment. Name the gas evolved. List two metals which can react in a similar way as the zinc. List two metals which cannot react in a similar way as the zinc. Name two glass apparatus which could have been used instead of the test tube.
  3. The diagram below is an illustration of a thermos flask. Study the diagram carefully and answer the questions that follow. Name the parts labelled I, II, III, IV and V. How does the device minimize heat loss or gain through (α) conduction? (β) convection? (γ) radiation? State one use of the thermos flask.
  4. The diagrams below illustrate an experimental set-up on a physical property of soil using three soil types X, Y and Z. Study the set-up carefully and answer the questions that follow: Name the parts of the set-up labelled I, II, III and IV. Which of the three soil types has the (α) highest water holding capacity? (β) least water holding capacity? Name each of the three soil types X, Y and Z. Suggest a suitable title for the experiment.

PART I [40 marks]

Answer all of Question 1

Questions for this section are in the printed paper.

PART II [60 marks]

Answer all of Question 1

Question 1

  1. List the three particles which make up matter.
  2. State four hereditary features in humans.
  3. State the energy transformation that takes place in each of the following activities: dry cell in use; solar panel in use; electric stove in use; hammering of a piece of metal.
  4. State two ways each in which each of the following cultural practices is important in vegetable production: staking; pruning.

Question 2

  1. What is indiscriminate sex? Give two reasons why teenagers indulge in indiscriminate sex.
  2. Name two sources each of natural light; artificial light.
  3. State three ways in which soil texture is important in crop production.
  4. Write down the systematic name of each of the following chemical compounds: FeS; CO; Cu2O; NaOH.

Question 3

  1. What do the symbols L, N and E represent in an electric plug? What is the function of the fuse box in household electrical wiring?
  2. Mention four classes of insect pest based on their feeding habits.
  3. Classify the first four elements of the periodic table as metals and non-metals.
  4. Name the three types of blood vessels in humans.

Question 4

  1. State the difference between organic fertilizer and inorganic fertilizer. State two effects of inorganic fertilizer on the environment.
  2. Classify the following substances as acids or bases: unripe lemon juice; wood ash; liquid in a car battery; bicarbonate of soda.
  3. What is a fruit? State two differences between a fruit and a seed.
  4. State the effect of heat on each of the following substances: plastics; alcohol; metal rod.

Question 5

  1. Classify the following chemical substances based on their uses under the headings as shown in the table below: N.P.K., Sodium hydroxide, Milk of magnesia, Paracetamol, Alcohol Agricultural Industry Medicine . . .
  2. State one use each of the following instruments used in the study of the weather: rain gauge; hygrometer; anemometer.
  3. Name two types of transistors. Draw and label the circuit symbols of the transistors named in (i).
  4. State three reasons why vegetable farming is important.