2024_Combined science_olevel_mj_paper1

Extracted Content: 2024_Combined science_olevel_mj_paper1

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MATHS GUARDIOLA +447852954215

ZIMBABWE SCHOOL EXAMINATIONS COUNCIL
General Certificate of Education Ordinary Level

COMBINED SCIENCE 4003/1
PAPER 1 Multiple Choice 1 hour

JUNE 2024 SESSION

Additional materials:

Multiple Choice answer sheet

Soft clean eraser

Soft pencil (type B or HB is recommended)
Calculator (Optional)

INSTRUCTIONS TO CANDIDATES

Answer all questions. For each question, there are four possible answers, A, B, C and D. Choose
the correct answer. Record your choice in soft pencil on the separate answer sheet provided.

Read very carefully the instructions on the answer sheet.

INFORMATION FOR CANDIDATES

There are forty questions in this paper. Each correct answer will score one mark. Any rough
working should be done on this question paper.

This question paper consists of 16 printed pages.
Copyright: Zimbabwe School Examinations Council, J2024.

©ZIMSEC J2024 [Turn over

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MATHS GUARDIOLA 2 +447852954215

1 The diagram shows a palisade cell.

The function of part X is to

A trap sunlight.

B maintain the shape of the cell.

Cc control the activities of the cell.

D allow substances in and out of the cell.

2 The diagram shows a food web.

wild dog

frog

)

AN goat /

grass
Which organism is a secondary consumer?

grass
goat
frog
rabbit

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MATHS GUARDIOLA +447852954215

3
3 Which human characteristic shows discontinuous variation?
A sex
B mass
Cc height
D foot length
4 During digestion, the enzyme amylase converts
A protein to amino acids.
B starch to glycogen.
Cc starch to maltose.
D fats to fatty acids and glycerol.
5 Kwashiorkor is a deficiency disease caused by lack of
A fats.
B proteins.
Cc vitamins.
D carbohydrates.
6 An experiment was set up to investigate a factor of photosynthesis as shown in the diagram.

sodium hydroxide
solution

What is the function of the sodium hydroxide in the experiment?

to release oxygen
to absorb oxygen
to absorb carbon dioxide
to release carbon dioxide

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7 The diagram shows part of the human respiratory system.
In which part, A, B, C or D, does gaseous exchange take place?

8 Blood capillaries have
A valves.
B very large lumen.
Cc walls that are one cell thick.
D muscle layers which are very thick.
9 Which component of blood carries hormones around the body?
A plasma
B platelets
Cc red blood cells
D white blood cells

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10 The diagram shows the general structure of a flower.
Which part, A, B, C or D, develops into a fruit after fertilisation?

11 The diagram shows the male reproductive system.
Which part, A, B, C or D, is cut or tied during sterilisation?

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13

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MATHS GUARDIOLA +447852954215

Which process is shown?

A ovulation

B menstruation
Cc implantation
D fertilisation

Which disease is caused by bacteria?

A malaria
B bilharzia
C syphilis

D genital herpes

Vomiting, diarrhoea and abdominal pains are signs and symptoms of

A scurvy.

B cholera.

Cc aenamia.

D gonorrhoea.

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MATHS GUARDIOLA +447852954215

The diagram shows a method of separating dyes.

The method of separation shown in the diagram is
A filtration.

B distillation.

Cc evaporation.

D chromatography.

Which substance is a mixture?

A air

B oxygen
Cc magnesium
D magnesium oxide

One mole of hydrogen and one mole of sodium chloride have the same number of

A neutrons.
B electrons.
Cc protons.

D particles.

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MATHS GUARDIOLA 4447852954215

18 Anorganic compound contains 84% carbon (C) and 16% hydrogen (H) by mass.

What is the empirical formula of the organic compound?
[Atomic mass of carbon is 12 and that of hydrogen is 1]

A CH
B CH,
C C,H
D Ci.

19 Which process is used to manufacture ammonium nitrate fertiliser from ammonia?

A reduction

B distillation

Cc electrolysis
D neutralisation

20 Lemon juice is considered to be a weak acid.
Which observations, with litmus paper, shows that lemon juice is an acid?

[___[blue litmus [redlitmus |
[B<strong>_|tumsred </strong>[remainsred<strong></strong>
[D<strong>|bleaches [bleaches </strong>__|

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MATHS GUARDIOLA ___-+447852954215 9

21 The diagram shows a reaction of dilute hydrochloric acid with substance X to produce a
magnesium salt.

hydrogen gas

Substance X is

A magnesium.

B magnesium oxide.

Cc magnesium chloride.
D magnesium hydroxide.

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AMIGA

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23

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MATHS GUARDIOLA ___ 4447852954215

10

The flow diagram shows the stages involved in the separation of the gases in air.

cool to -78°C

compress and cool to -200°C

fractional distillation

Which gas is collected as a liquid at a temperature of -183 °C by the fractional distillation
process?

A hydrogen
B nitrogen
Cc oxygen

D carbon dioxide

The equation shows the production of sulphur trioxide.
2SO xq) + Ox = 2SOyq AH = -98 KI/mol

The equation shows that the production of sulphur trioxide is

an endothermic process.
a displacement process.
a reduction process.

an exothermic process.

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MATHS GUARDIOLA 4447852954215

24 The diagram shows an experimental set up to investigate conditions necessary for rusting.
Which test tube, A, = CorD, a havea ae nail?

oil layer
nail
nail “ion

boiled water
cold water waltuns ‘thlotide

25 Which metal is used to galvanise iron?

A tin

B zinc

Cc copper

D chromium

26 The diagram shows the preparation of ethanol.

—limewater turns
milky

Substance Z is

A water.

B glucose solution.

c dilute sulphuric acid.

D calcium carbonate solution.

27 To which homologous series do methane, ethane and propane belong?

A alkanes

B alkenes

Cc alcohols

D carboxylic acids

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28 The diagram shows a scale on a micrometer screw gauge.

The measurement shown is

A 3.30 mm.
B 3.50 mm.
Cc 3.80 mm.
D 30.0 mm.

29 Which one is a form of potential energy?

A heat energy

B light energy

Cc elastic energy

D electrical energy

30 A force of 20 N is used to push an object of mass 8 kg.
The acceleration of the object is

A 04m.

B 25m/s.
Cc 120ms.
D 160.0mss.

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31 The diagrams show the four strokes of a petrol engine but not in sequential order.
In which diagram, A, B, C or D, is chemical energy converted to kinetic energy?

32 The diagram shows a simple machine.

100 N

What is the velocity ratio of the machine?

Damp
Ww
s

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33 The diagram shows forces acting on an object.

10N 20N
The resultant force is
A 10N.
B 20N.
Cc 30N.
D 200 N.

34 Which one is the correct formula for calculating pressure?

area
A fe
force
force
B —
area
Cc force X area
D force + area

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MATHS GUARDIOLA +447852954215

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35 In a hydraulic system, there are two valves, P and Q, as shown in the diagram.

What happens to the valves when piston R moves down?

valve P
A opens
B closes
Cc opens
D closes

valve Q

closes
closes
opens
opens

36 The total mass of 40 identical seeds is 4.80 g.

What is the mass of one seed?

A 012g

B 19.208
C 4048
D ~=-83.33g

37 Which physical quantity should remain constant when applying Ohm's law?

A pressure
B voltage
Cc current

D temperature

38 A direct current (d.c) motor converts

Sap

UATE

kinetic energy to electrical energy.
heat energy to electrical energy.
electrical energy to kinetic energy.
heat energy to kinetic energy.

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39

40.

Light waves are transmitted inside

A optic fibres.

B coaxial cables.

Cc twisted wire lines.
D sheathed pair cables.

An example of an unguided transmission media is
A sheathed pair cables.
optic fibre.

B
Cc coaxial cable.
D Wi-Fi.

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