Cambridge IGCSE Science - Combined 0653 — 2006 May/June Paper 1 · Variant 1

Question 1

1 Which statement about diffusion is correct? A Changing temperature has no effect on the diffusion of molecules. B Diffusion involves the random movement of molecules. C Small molecules enter but do not leave cells by diffusion. D Small molecules diffuse through cell membranes but not through cell walls.

Accepted Answer

B

Question 2

2 A test-tube contains a solution of the enzyme catalase. Which colour is obtained when this solution is tested with biuret solution? A blue B blue-black C orange D violet-mauve

Accepted Answer

D

Question 3

3 In what form is carbohydrate stored in a leaf? A fat B protein C starch D Vitamin C

Accepted Answer

C

Question 4

4 The diagram shows a section through a decaying tooth. decayed region of tooth Which parts of the tooth have decayed? A dentine and enamel B enamel and pulp cavity C pulp cavity and root D root and dentine

Accepted Answer

A

Question 5

5 The diagram shows a section through part of a lung. blood capillary carbon dioxide diffuses out air in and out X oxygen diffuses in What is structure X? A alveolus B bronchus C pleural membrane D trachea

Accepted Answer

A

Question 6

6 The diagram shows an external view of the heart of a man who has recently had a heart attack. Which blood vessel was blocked by a blood clot to cause the attack? B aorta C A D area of dead muscle

Accepted Answer

D

Question 7

7 There are four stages in testing a leaf for starch. 1 soften in hot water 2 stain with iodine 3 boil in alcohol 4 boil in water What is the correct order for these stages? A 1 2 3 4 B 1 4 3 2 C 3 1 2 4 D 4 3 1 2

Accepted Answer

D

Question 8

8 A person is touched on the back of a hand and they decide to move their arm. What is the path of nerve signals, when the skin is touched, that causes this response? A effector → spinal cord → brain → spinal cord → receptor B effector → spinal cord → receptor → spinal cord → brain C receptor → spinal cord → brain → spinal cord → effector D receptor → spinal cord → effector → spinal cord → brain

Accepted Answer

C

Question 9

9 In family planning, what acts as a barrier between eggs and sperms? A cap B IUD C pill D rhythm

Accepted Answer

A

Question 10

10 During pollination, pollen grains are transferred from A anther to ovule. B anther to stigma. C stigma to anther. D stigma to ovule.

Accepted Answer

B

Question 11

11 In the nineteenth century, August Weissmann removed the tails of two mice before breeding from them. He then removed the tails of their offspring before breeding from them again. He repeated this for many generations. All the offspring had tails when they were born. Why were new mice without tails never born? A Asexual reproduction does not produce new varieties. B Genes are not passed on from parents to offspring. C The results of asexual reproduction are not predictable. D Variation due to the environment is not inherited.

Accepted Answer

D

Question 12

12 In the carbon cycle, several different processes may release carbon dioxide from dead organisms. Which process does not do so? A combustion B decomposition C photosynthesis D respiration

Accepted Answer

C

Question 13

13 Deforestation in tropical rain forests can lead to A decreased carbon dioxide in the air. B decreased species diversity. C increased number of habitats. D increased oxygen in the air.

Accepted Answer

B

Question 14

14 The diagram represents an atom. e key p proton p p p p e n n n n neutron e n n e electron e nucleus What is the nucleon number of this atom? A 2 B 4 C 9 D 13

Accepted Answer

C

Question 15

15 Metals and non-metals can each form ions. Which charges do these ions have? metal ion non-metal ion A negative negative B negative positive C positive negative D positive positive

Accepted Answer

C

Question 16

16 A mixture contains two liquids. One liquid has a boiling point of 120 °C and the other boils at 160 °C. water P Q R Which apparatus should be used to separate the two liquids? A P only B Q only C R only D P, Q or R

Accepted Answer

C

Question 17

17 Argon is a gas used to fill lamp bulbs.

What are sources of this argon?

the air seawater
A v v
B v x
Cc x v
D x x

Accepted Answer

B

Question 18

18 The positions of four elements are shown in the outline of the Periodic Table. Which element has a high melting point and forms coloured compounds? A B C D

Accepted Answer

A

Question 19

19 Two properties of a white solid are shown. • The solid dissolves in water forming an alkaline solution. • The solid gives a yellow flame test. Which solid has both of these properties? A calcium chloride B calcium hydroxide C sodium chloride D sodium hydroxide

Accepted Answer

D

Question 20

20 Which two elements do not form an alloy? A carbon and sulphur B carbon and iron C copper and zinc D silver and gold

Accepted Answer

A

Question 21

21 Which property of a metal determines the method used to extract the metal from its ore? A the melting point of the metal B the position of the metal in the Periodic Table C the reactivity of the metal D the relative atomic mass, Ar, of the metal

Accepted Answer

C

Question 22

22 Aqueous sodium hydrogensulphate reacts with aqueous sodium hydroxide as shown. In this
reaction, the sodium hydrogensulphate loses hydrogen.

sodium hydrogensulphate + sodium hydroxide — sodium sulphate + water

NaHSQ, + NaOH > NazSO, +H20

Which terms apply to sodium hydrogensulphate in this reaction?

acid alkali salt
A v x x
B v x v
Cc x v x
D x v v

Accepted Answer

B

Question 23

23 When glucose, C6H12O6, is heated in a test-tube, it can form carbon and water. This change is an example of A combustion. B decomposition. C distillation. D evaporation.

Accepted Answer

B

Question 24

24 Molten lead(II) bromide conducts electricity and the bulb lights up in the experiment shown. 6 V d.c. V electrode molten lead(II) bromide heat The bulb goes out soon after the heat is removed. 1 Lead and bromide ions can no longer move freely. 2 Lead and bromide ions have all reacted. 3 Lead(II) bromide has fully melted. Which reasons explain this? A 1 only B 2 only C 3 only D 1 and 2 only

Accepted Answer

A

Question 25

25 The diagrams show two experiments X and Y. platinum aqueous ammonia (—-} ammonia + oxygen ———» nitrogen oxide + water Y copper(II) oxide hydrogen —> heat copper(II) oxide + hydrogen ———> copper + water Which experiments involve a catalyst? 0 ONO DW > x x <<] x x

Accepted Answer

B

Question 26

26 Plastics and wood can each be used to make doors and window frames. Which row in the table shows two correct statements? requires painting for obtained from a renewable maintenance resource A plastics plastics B plastics wood C wood plastics D wood wood

Accepted Answer

D

Question 27

27 Some man-made polymers, for example, poly(ethene), are made from monomers that join together by forming carbon-to-carbon bonds. From what source are the monomers obtained and what type of carbon-to-carbon bonds form? source of carbon-to-carbon bonds monomers A coal covalent B coal ionic C oil covalent D oil ionic

Accepted Answer

C

Question 28

28 A measuring cylinder contains some water. When a stone is put in the water, the level rises. cm3 cm3 200 200 150 150 100 100 50 50 stone What is the volume of the stone? A 50 cm3 B 70 cm3 C 75 cm3 D 125 cm3

Accepted Answer

A

Question 29

29 A child is standing on the platform of a station, watching the trains. A train travelling at 30 m / s takes 3 s to pass the child. What is the length of the train? A 10 m B 30 m C 90 m D 135 m

Accepted Answer

C

Question 30

30 A person measures the length, width, height and mass of a rectangular metal block. Which of these measurements are needed in order to calculate the density of the metal? A mass only B height and mass only C length, width and height only D length, width, height and mass

Accepted Answer

D

Question 31

31 Which form of energy do we receive directly from the Sun? A chemical B light C nuclear D sound

Accepted Answer

B

Question 32

32 A labourer on a building site lifts a heavy concrete block onto a lorry. He then lifts a light block the same distance in the same time. Which of the following is true? work done in lifting the power exerted by labourer blocks A less for the light block less for the light block B less for the light block the same for both blocks C more for the light block more for the light block D the same for both blocks more for the light block

Accepted Answer

A

Question 33

33 Two plastic cups are placed one inside the other. Hot water is poured into the inner cup and a lid is put on top as shown. lid small spacer small air gap hot water bench Which statement is correct? A Heat loss by radiation is prevented by the small air gap. B No heat passes through the sides of either cup. C The bench is heated by convection from the bottom of the outer cup. D The lid is used to reduce heat loss by convection.

Accepted Answer

D

Question 34

34 A ray of light passes through a window. Which path does it take? A air glass air B C D

Accepted Answer

C

Question 35

35 Sounds are made by vibrating objects. A certain object vibrates but a person nearby cannot hear any sound. Which statement might explain why nothing is heard? A The amplitude of the sound waves is too large. B The frequency of the vibration is too high. C The sound waves are transverse. D The speed of the sound waves is too high.

Accepted Answer

B

Question 36

36 What are the symbols used for the units of current and resistance? unit of current unit of resistance A A W B A Ω C V W D V Ω

Accepted Answer

B

Question 37

37 Four lamps and four switches are connected to a power supply as shown in the circuit diagram. When all the switches are closed, all the lamps are lit. When one of the switches is then opened, only one lamp goes out. Which switch is opened? A B C D

Accepted Answer

C

Question 38

38 An electric power tool is being used outdoors in a shower of rain. What is the greatest hazard to the user? A The cable gets hot and causes burns. B The circuit-breaker cuts off the current. C The current passes through water and causes a shock. D The tool rusts.

Accepted Answer

C

Question 39

39 A transformer is to be used to produce a 6 V output from a 24 V input. coil X coil Y 24 V 6 V What are suitable numbers of turns for coil X and for coil Y? number of turns number of turns on coil X on coil Y A 240 60 B 240 240 C 240 960 D 960 60

Accepted Answer

A

Question 40

40 A Geiger counter detects radiation from radioactive sources. A radioactive source is inside a thick aluminium container as shown. radioactive source 2 m Geiger counter thick aluminium container Which type of radiation from this source is being detected? A alpha-particles B beta-particles C gamma-rays D radio waves

Accepted Answer

C

Question paper16 pages

Mark scheme2 pages

Questions as text

Q1 · Which statement about diffusion is correct?

Q2 · A test-tube contains a solution of the enzyme catalase

Q3 · In what form is carbohydrate stored in a leaf?

Q4 · The diagram shows a section through a decaying tooth

Q5 · The diagram shows a section through part of a lung

Q6 · The diagram shows an external view of the heart of a man who has recently had a heart…

Q7 · There are four stages in testing a leaf for starch

Q8 · A person is touched on the back of a hand and they decide to move their arm

Q9 · In family planning, what acts as a barrier between eggs and sperms?

Q10 · During pollination, pollen grains are transferred from A anther to ovule

Q11 · In the nineteenth century, August Weissmann removed the tails of two mice before breeding…

Q12 · In the carbon cycle, several different processes may release carbon dioxide from dead…

Q13 · Deforestation in tropical rain forests can lead to A decreased carbon dioxide in the air

Q14 · The diagram represents an atom

Q15 · Metals and non-metals can each form ions

Q16 · A mixture contains two liquids

Q17 · Argon is a gas used to fill lamp bulbs

Q18 · The positions of four elements are shown in the outline of the Periodic Table

Q19 · Two properties of a white solid are shown

Q20 · Which two elements do not form an alloy?

Q21 · Which property of a metal determines the method used to extract the metal from its ore?

Q22 · Aqueous sodium hydrogensulphate reacts with aqueous sodium hydroxide as shown

Q23 · When glucose, C6H12O6, is heated in a test-tube, it can form carbon and water

Q24 · Molten lead(II) bromide conducts electricity and the bulb lights up in the experiment…

Q25 · The diagrams show two experiments X and Y

Q26 · Plastics and wood can each be used to make doors and window frames

Q27 · Some man-made polymers, for example, poly(ethene), are made from monomers that join…

Q28 · A measuring cylinder contains some water

Q29 · A child is standing on the platform of a station, watching the trains

Q30 · A person measures the length, width, height and mass of a rectangular metal block

Q31 · Which form of energy do we receive directly from the Sun?

Q32 · A labourer on a building site lifts a heavy concrete block onto a lorry

Q33 · Two plastic cups are placed one inside the other

Q34 · A ray of light passes through a window

Q35 · Sounds are made by vibrating objects

Q36 · What are the symbols used for the units of current and resistance?

Q37 · Four lamps and four switches are connected to a power supply as shown in the circuit…

Q38 · An electric power tool is being used outdoors in a shower of rain

Q39 · A transformer is to be used to produce a 6 V output from a 24 V input

Q40 · A Geiger counter detects radiation from radioactive sources

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