2019_Combined science_olevel_mj_paper1

Extracted Content: 2019_Combined science_olevel_mj_paper1

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Centre Number Candidate Satiber

L J )

ZIMBABWE SCHOOL EXAMINATIONS COUNCIL

General Certificate of Education Ordinary Level

COMBINED SCIENCE 4003/1
PAPER I Multiple Choice

JUNE 2020 SES

I hour
Additional materials:

Multiple Choice answer sheet

Soft clean eraser

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

INSTRUCTIONS TO CANDIDATES

Do not open this booklet until you are told to do so,
Write your name, centre number and candidate number on the answer sheet in the spaces
provided unless this has already been done for you.

Read very carefully the instructions on the answer sheet.
INFORMATION FOR CANDIDATES

Each correct answer will score one mark. A mark will not be deducted for a wrong answer.
Any rough working should be done in this booklet.

There are forty questions in this paper.
Answer all questions.
For each question, there are four possible answers, A, B, C and D.

Choose the one you consider correct and record your choice in soft pencil on the separate
answer sheet provided.

This question paper consists of 16 printed pages.

Copyright: Zimbabwe School Examinations Council, J2020.

© AIMSEC 32020

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B fungi

C humus

D bacteria

What is the function of the vacuole in a plant cell?
A stores salts and sugars

B_ controls the activities of the cell

C produces food by photosynthesis

D controls movement of substances in and out of the cell

The equation for anaerobic respiration in muscle cells is given below:
glucose —~* energy + Q

What is Q?

A carbon dioxide

B lactic acid

C alcohol

D_ water

40001 DIPLO

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Phe diagram shows part of teeth on the Upper jaw ofr linnan being,

Fi

The tooth labelled X is
a molar,
@ canine,

an incisor,

s> Oo = +

a premolar.

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The diagram shows a stage in the proces

«of testing a leaf for starch.

———« bowing tube

alcohol
hot water

leaf

burner

Why is the stage shown important?

5 Oo BS}

to soften the leaf
to make the leaf brittle
to kill and open up the leaf cells

to remove chlorophyl! from the leaf

d00V1 13020

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What was the percentage germination?

A 30 100
ae yy ee
80 L

B50 100
= x ae

80 1

c 30. 80

Too ~ 1
D 50 80
100 ~ 1

Where does gaseous exchange occur?
A in the bronchiole

Bin the bronchus

Cin the trachea
D

in the alveoli

Which one is not a function carried out by the blood?
A defence

excretion
C transport

D homeostasis

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Why is transpiration good for a plant?

>

It helps the plant to take up water and mineral salts.

It helps to transport sugars around the plant.
C It maintains a balance of starch.
D

It keeps the plant cells turgid.

The diagram shows the double blood circulation system in humans.

rest of
the body

Which blood vessels are thick walled?

A land2
B_ land3
Cc 2and4
D 3and4

4003 1 2020

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12.

Phe diagram shows the structure of a wind pollinated Hower,

Which part produces pollen grams?

The diagram shows the transfer of a substance between the placenta and the uterine

wall in a pregnant woman.

The substance carried in the direction of the arrows is

A urea.
oxygen.

glucose.

>: A 8

an antibody,

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15.

8

The diagram shows the life cycle of the anopheles mosquito.

Which method can effectively control the mosquito at stage J?
spraying with insecticide

A

Busing mosquito repellents

C covering water ponds with oil
D

cutting grass around the home

Active immunity may be developed by

A suffering and recovering from a disease.
B breast feeding for at least six months.

C avoiding contact with sick people.
D

being injected with antibodies.

The Avogadro’s number is the number of
particles in one mole of a substance.
protons in one mole of a substance.

electrons in one mole of a substance.

5 A @B >

neutrons in one mole of a substance.

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7.

9
The two types of sub-atomic particies found in the nucleus are the
A electron and proton
B electron and neutron
C protan and neutron
D nucteon and clectron

The sytribol 29 represents an atom of oxygen

How many neutrons does the atom have’

>. 7 SB +

What ts the rebative molecular mace of water Hi”
{ArefHwl. ArofO w 16!

A 14
eo
Cc it
DR

om

Veen ever

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20.

21,

10

eS . KY
The diagram shows the type of banding ia compound,

XY has

A hydrogen bonding.
Bmetallic bonding.
C covalent bonding.
D

tonic bonding.

Which product is formed when a metal re¢

A asalt
Banoxide
Ca carbonate
D

a hydroxide

The best method of separating a mixture of liquids of diffe

filtration.
evaporation,

simple distillation,

SA wie

fractional distillation.

.
.

X:

(OUND ag

lets with air?

tent boiling pointe is

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23.

24.

11

A solution has a pH of 6.
The solution is a

strong acid.
weak acid.

strong base.

os AO Be +}

weak base.

A neutralisation reaction occurs when

a salt only is formed.
water only is formed.

oxidation only occurs.

59 AO BF}

water and a salt are formed.

The production of ammonia requires
pressure of 200 atm to 300 atm.
temperature of 200 °C to 250 °C.

vanadium (V) oxide catalyst.

5 AO mB >}

sulphur dioxide and oxygen.

What type of a reaction occurs when carbon monoxide reacts with iron (III) oxide?

A. oxidation only
reduction only

decomposition only

o> AO 8

oxidation and reduction

4003/1 J2020
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27.

28.

12
Which fuel is a hydrocarbon?
A hydrogen
B coal gas
C butane

D ethanol

The diagram shows an organic molecule.

The molecule is
A ethane.

B_ ethene.

C ethanol.

D propene.

A possible unit of density is
3

A cm/g.
git

B cme.

C gicm’.

D g /em.

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VMs Mesa Tra os ak obit apile: Geis Latins

WAKE Ope aba stiiple iiiehtie is shawna in the diagram?

Nye
We lever
4 pulley

ae lined plane

Vi ettartat FAQ. N paises a load of 600 N through a distance of 2m, The effort
Wovens a divtimee ab LO na

What is the effeteney of the systea?

; ed
[| ay
C 75%

Hydraulic ayatenis are based on the tiet that

\ liquids cannot be compressed,
Be liquids How cannot be stopped.
© pressure (0 Liquids inereases: with depth,

D liquids Ganamtt equal forces in all directions,

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34.

Convechon takes place tn
A pases and solids

Bo gases and liquids

© liguids and solids

D gases, liquids and solids,

What is the purpose of the curved surface of a solar cooker?
A to absorb maximum energy from the sun

B to focus energy trom the sun to the pot

C to reflect heat away from the pot

D to absorb heat from the pol

The diagram shows a carburettor,

Which part controls the amount of air that mixes with petrol?

. . - P u
Air, with a pressure of 400 Pa, acts on a wall of area 5 m’,

What is the force exerted by the air?

A 80N
B 395N
C 405N
D 2000N

AO0WT D000

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37.

The energy change that happens to information before transriss100 ina Ge

1%
A
8
C

D

I] shone

sound to light,
light to sound,
electrical to sound,

sound to electrical,

An electrical appliance with double insulation does not have

A

B

D

a neutral wire,
an earth wire.
a live wire.

insulation,

Which material is used to make a core of an electromagnet?

A
B
Cc

D

iron
steel
copper

aluminium

4A S220
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39. The diagram shows an alternating current generator.

Which component allows current to change direction?

40. Which graph shows the relationship between voltage (V) and current (I) in a pure
metal?

viv |

VV

4004} 2020

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