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BECEzone

THE WEST AFRICAN EXAMINATIONS COUNCIL GHANA

Basic Education Certificate Examination

Integrated Science 2001

OBJECTIVE TEST

Objective Test

Question 1

The main pollutant from domestic fires is

Question 2

Plantain is propagated vegetatively by

Question 3

Which of the following gases supports combustion?

Question 4

The main function of petals in a flower is to

Question 5

The organ in the human body which is responsible for the removal of urea is the

Question 6

The sun and the planets form the

Question 7

The bilharzia worm can enter the human body through the

Question 8

Brass is an alloy of copper and

Question 9

Question 9 diagram
Which of the following diseases is contracted through infected wounds? Use the figure below to answer the following questions

Question 10

Which of the parts labeled represents the pivot?

Question 11

The effort is represented by

Question 12

Which of the following parts of the human body are sense organs? I. Tongue II. Hair III. Nose IV. Skin

Question 13

The function of the cotyledon is to

Question 14

Which of the following substances are components of a fertile soil?

Question 15

Which of the following appliances transform(s) electrical energy to heat energy? I. Swish oven II. Hair dryer III. Refrigerator motor

Question 16

A ray of light makes an angle of 20° with the surface of a plane mirror. Determine the angle of reflection.

Question 17

Seasonal changes are the result of the

Question 18

Crystals of sugar were obtained when a hot solution of sugar was cooled to room temperature. What conclusion can be drawn from this observation?

Question 19

Which of the following processes about all living things is / are true? I. Reproduction II. Respiration III. Locomotion IV. Excretion

Question 20

Tendrils in plants are adaptations that enable the plant to

Question 21

The density of a substance is 2.5gcm-3. Calculate the volume of the substance if its mass is 25.0 g.

Question 22

The food substance that promotes good health is

Question 23

The energy that causes the turbine of hydro-electric plant to rotate is

Question 24

Which of the following pairs of organs are parts of the central nervous system?

Question 25

Plants manufacture their food using I. carbon dioxide II. oxygen III. light IV. chlorophyll

Question 26

Which of the following crops improves soil fertility when cultivated continuously on the same piece of land?

Question 27

It is necessary to keep household refuse in covered containers in order to prevent

Question 28

The fraction of the earth’s surface that faces the sun at any particular time is

Question 29

Which of the following is a micro-organism?

Question 30

Which of the following statements about machines is/are correct? I. Machines help us to do work more easily II. A force applied at one point of the machine overcomes a load at another point of the machine III. All machines have engines

Question 31

The female part of a flower is called the

Question 32

Which of the following substances is a compound?

Question 33

A solution in which no more solute will dissolve at a particular temperature is said to be

Question 34

The process of respiration could be represented by the following equation: Glucose + oxygen → water + carbon dioxide + X What does X represent?

Question 35

When oil and water are shaken together they form a mixture called

Question 36

The organism which lives in the human blood as a parasite is

Question 37

The fusion of an egg cell with sperm forms

Question 38

The instrument used to measure current in an electric circuit is the

Question 39

The atom of an element has 4 protons and 5 neutrons in its nucleus. How many shells are occupied in the atom?

Question 40

The gaps left between railway lines is to allow for

THEORY

ESSAY

Answer three questions only from this section. Illustrate your answers wherever possible, with large, clear and fully labelled diagrams. Credit will be given for clarity of expression and orderly presentation of material. All questions carry equal marks

Question 1

(a) (i) What is surface tension? (ii) Name two household devices that make use of surface tension (iii) Explain how the principle of surface tension operates in one of the devices you have named b) (i) What is constipation? (ii) State four ways by which constipation can be prevented c) A block of mass 10kg is suspended from a spring. Calculate the force acting on the block. [g = 10ms-2] d) An amount of sodium hydroxide solution was put into a beaker and a piece of litmus paper was added. Dilute hydrochloric acid was added a little at a time with stirring until the litmus paper just turned purple. The resulting solution was evaporated to dryness. (i) What was the colour of the litmus paper in the sodium hydroxide solution? (ii) What does the colour change of the litmus paper indicate? (iii) What substance was left after the evaporation? (iv) Write a balanced equation for the reaction that took place.

Question 2

a) State and explain three ways by which plants protect themselves from danger b) (i) What is an anion? (ii) Give the names of the products formed when the following pairs of compounds react together: α) NH4OH and dilute HCL β) CaCO3 and dilute HCL c) (i) What is electromagnetism? (ii) With the aid of a circuit diagram describe how a piece of metal can be magnetized

Question 3

a) (i) State three characteristics of roots (ii) two functions of roots b) State two conditions necessary for the germination of seeds c) Describe briefly how the volume of an irregular shaped metal ball could be determined d) Write down the chemical formula for each of the following compounds: (i) sodium chloride (ii) copper sulphate (iii) magnesium sulphate (iv) potassium carbonate e) State the method that could be used to separate each of the following compounds: (i) iodine and sand (ii) ethanol and water

Question 4

a) (i) What is digestion? (ii) Describe briefly how food is digested in the stomach b) (i) What is meant by eclipse of the sun? (ii) With the aid of a labelled diagram, distinguish between total eclipse and partial eclipse. c) (i) State the difference between a physical change and a chemical change (ii) Give one example of each of a physical change and a chemical change

PART I [40 marks]

Answer all of Question 1

Questions for this section are in the printed paper.