2023_Combined science_olevel_mj_paper1

Extracted Content: 2023_Combined science_olevel_mj_paper1

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Extracted Text

Which part of a cell is found in both plant and animal cells?

A cell membrane

B vacuole
Cc cell sap
D cell wall

The diagram shows the internal structure of the root of a dicotyledonous plant.

Part X is the

A cortex.

B xylem.

c phioem.
D epidermis.

A manual worker's diet must contain a higher proportion of

A fibre.
B iodine.
Cc vitamin D.

D carbohydrates.

e n ecosystem, a zebra feeds on grass, a lion feeds on the zebra and a vulture feeds on
e lion.

The lion is a
MuchA2Tutor
A producer. 0778101119/0779482512
B primary consumer. Fanta College
Cc secondary consumer.
D tertiary consumer,

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$ The diagram shows part of the human digestive system.

What is labelled A?

A the stomach

B the pancreas

Cc the large intestine

D the small intestine

6 The rate of transpiration is measured by a

A barometer.

B manometer.

Cc micrometer.

D potometer.

MuchA?Tutor
0778101119/0779482512

Fanta College

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4

10

The diagram shows a flower.

Which part, A, B, C or D, develops into a fruit after fertilisation?

B Cc

A farmer planted 30 bean seeds and 12 seeds did not germinate.

What was the percentage germination?

\“F —- -_.
A 18% ee
B 40% a
C 42%
D 60%

Which characteristic, in humans, shows continuous variation?

A sex

B height

Cc tongue rolling

D left or right handedness

Which part of the male reproductive system carries urine and semen out of the body
through the penis?

A scrotum.

B urethra.

Cc sperm duct.
D epididymis.

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11

12

13

14

16

Which organism causes genital herpes?

A
B
Cc
D

fungi
virus
bacterium
protozoan

Which blood vessel transports deoxygenated blood to the lungs?

A vena cava

B pulmonary artery
Cc pulmonary vein
D aorta

Aerobic respiration takes place in the
A nucleus.

B vacuole.

Cc chloroplast.

D mitochondria.

A food sample was mixed with Benedict's solution in a test tube. The test tube was
placed into a hot water bath. The solution changed from blue to brick-red.

The food sample contained

A starch.
B glucose.
Cc protein.

D maltose.
Which method is used to separate an insoluble solid from a liquid?

filtration
magnetism
distillation
evaporation

SAOW>

The the mass number and the proton number of an element X is shown below.
ax

How many neutrons are there in an atom of element X?

35

46

81
116

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17

18

19

20

elements M and N.
The diagram shows bonding in 8 compound formed between

In which Group of the Periodic Table is element N found?

A I

B I

c VI
D Vill

How many moles are present in 6 grams of carbon?

[mass number of carbon = 12; atomic number of carbon = 6]

A 0.5 i %, \
B 1.0 YAU

4 .
c 120 | ane
D 6.0x 10

A metal reacts with steam to produce hydrogen and a

A metal oxide.

B metal salt.

Cc metal chloride,
D metal hydroxide.

A stage in the manufacture of sulphuric acid is shown by the equation:
280,(g) + Ox(g) = 280(g) A H=-94k3/ mol

The sign — shows that the reaction is

an endothermic reaction.

a reversible reaction.

an exothermic reaction,
an oxidation reaction,

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21

22

Oxygen is separated from nitrogen by fractional distillation because

A nitrogen makes 78% of the air.
B oxygen is denser than nitrogen.
C nitrogen is an inert element.

D of their different boiling points.

The diagram shows a method used to decorate a ring.

The method used is

A alloying.

B painting.

Cc galvanising.
D electroplating.

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23. _A salt can be prepared by adding an acid slowly using a burette to a conical flask wich Contains an indicator and sodium hydroxide.

acid

indicator + basic
solution

The method used is

A titration.

B filtration,

Cc distillation.

D fractional distillation.

24 Which reaction, in the blast furnace, shows the formation of slag?
CaCO, —* CaO +CO,

co,+c —> 20

Fe,O, +3C —* 2Fe + 3CO

CaO + SiO,— CaSiO,

Saar,

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oor

26

27

Which diagram, A
» A, B,C or D, shows the structure of ethene?

ne
hs oes
H H

H ‘H
SS i
B C=
H~ : Ny

ia
oe
H H H
H
a |
D c=¢-—C-
a OT CO] a
H H

Which statement, about halogens, is correct ?

A They are all gases.

B They are poor oxidising agents.
Cc Their reactivity increases down the Group.
D They have seven electrons in the outer shell

Which process is used to produce the hydrogen gas needed for the Haber process?

A roasting

B reduction

Cc electrolysis

D fractional distillation

The SI unit of mass is the

A metre.

B gram.

Cc newton.
D kilogram.

annaed Pere

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29 The relationship between mass (m) , volume (V) and density (P) of a substance s

expressed as
V
A P= —
m
m
rv
c P=m-V
D ?P=v-m

| 30 Which pair of physical quantities correctly defines weight and mass?

31

z

diagram shows a stone resting on a table.

Which principle of Newton's laws of motion is shown by the diagram?

weight is equivalent to mass and velocity
action and reaction are equal and opposite
a body remains at rest or in motion unless acted uy
s ; : pon b em
acceleration of a mass is proportional to the force provides ac minim —
is constant

on Ed

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32 Shiny surfaces are

A poor absorbers of heat .
B poor reflectors of heat ,
C good emitters of heat .
D good absorbers of heat .
33

Which row i i
one, A, B, C or D, correctly describes the events for the compression stroke
of a four stroke engine?

piston direction inlet valve exhaust valve
A up closed closed
B down open open
Cc up open open
D down closed closed

34 The diagram shows an object pulled along a 3 m horizontal surface.

eee
ee

What is the energy used?
A 0.1 J

B 10.0 J

Cc 33.03

D 90.0 J

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35 —‘ The diagram shows a simple machine.

What is the mechanical advantage of the machine?

ta /
A 05 w poe es
B 20 ig
Cc 200
D 600

36 Decoding of information is done by a

A cable.

B sender.

Cc receiver.

D transmission media.

37 Fluid pressure is measured by a

A voltmeter.

B manometer.
Cc micrometer.
D a photometer.

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| 38

39

—- ___..
_

13

The diagram shows two balloon

The balloons repel each other. s, X and Y, being brought closer to each other.

IITITTTNTTTTTTIT TUTTI TIT TITI

—— £ ¥ —5

Which are the possible charges on the balloons?

both are neutral

both are positively charged

X is positively charged and Y 1s negatively charged
X is negatively charged and Y is positively charged

oan S>

Which factor affects the rotation of a coil in an electric motor?

direction of coil

direction of motion of coil
strength of the magnetic field
number of coils

SARS

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14

40 = The diagram shows an electric circuit.
12V

2A

What is the resistance of the circuit?

A 200
B 6.02
Cc 12.02
D 24.02

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