Cambridge IGCSE Sciences - Co-ordinated (Double) 0654 — 2017 Oct/Nov Paper 1 · Variant 2

Question 1

1 The bicuspid valve in the heart stops blood from flowing in which direction? A left atrium to left ventricle B left ventricle to left atrium C right atrium to right ventricle D right ventricle to right atrium

Accepted Answer

B

Question 2

2 Four test-tubes contain the same volume of starch suspension but each test-tube is kept at a different temperature, as shown. 2 °C 10 °C 30 °C 60 °C An equal quantity of enzyme is added to each test-tube and, after ten minutes, iodine solution is added to each test-tube. The results are shown below. 2 °C 10 °C 30 °C 60 °C What do the results show? A At 2 °C the enzyme works slowly. B At 10 °C the enzyme does not work. C At 30 °C the enzyme works well. D At 60 °C the enzyme works best.

Accepted Answer

C

Question 3

3 What is homeostasis? A the maintenance of the body’s external environment B the maintenance of the body’s internal environment C the processes that produce heat in the body D the removal of wastes from the body

Accepted Answer

B

Question 4

4 The test-tube shows gelatine with a layer of black dye. The dye can diffuse through the gelatine. gelatine black dye What was the appearance of the test-tube after six hours? A B C D

Accepted Answer

D

Question 5

5 The diagram shows parts of a mesophyll cell. X What is found in the part labelled X? A chloroplasts and nucleus B chloroplasts only C nucleus only D watery solution

Accepted Answer

D

Question 6

6 Self-pollination occurs when pollen is transferred from the male part of a flower to the female part of the same flower. Which arrow on the diagram shows self-pollination? D A C B

Accepted Answer

A

Question 7

7 Which statement about food chains is correct? A A carnivore is a consumer that gets its energy from plants. B A carnivore is a producer that gets its energy from animals. C A herbivore is a consumer that gets its energy from plants. D A herbivore is a producer that gets its energy from animals.

Accepted Answer

C

Question 8

8 Food tests are performed on four substances.

Which substance contains fat and protein?

test reagent

Benedict's biuret ethanol iodine
A J J x x
B J x x J
Cc x J J x
D x x Jv Jv

key
¥ = positive test result

X = negative test result

Accepted Answer

C

Question 9

9 Which substance causes an increase in blood glucose concentration? A adrenaline B insulin C oxygen D vitamin C

Accepted Answer

A

Question 10

10 Humans must breathe air so that respiration can take place to release energy. Which gas in the air we breathe is needed to do this? A carbon dioxide B nitrogen C oxygen D water vapour

Accepted Answer

C

Question 11

11 Predators that hunt at night have large eyes and ears. This has resulted from the passing on of genes by the best-adapted organisms. What is this process called? A artificial selection B conservation C homeostasis D natural selection

Accepted Answer

D

Question 12

12 Which statements about X chromosomes in humans are correct?

present in present in
body cells in body cells of carry genes
males females
A v v v
B v x v
Cc J x x
D x v x

Accepted Answer

A

Question 13

13 Plants release oxygen as a waste product of photosynthesis. Which characteristic of living organisms does this demonstrate? A excretion B growth C nutrition D reproduction

Accepted Answer

A

Question 14

14 Which statement about atoms and molecules is correct? A All molecules are gases at room temperature and pressure. B Atoms are the smallest part of an element. C Atoms of the same element all have the same mass. D Molecules always contain atoms of more than one element.

Accepted Answer

B

Question 15

15 Excess copper sulfate is mixed with water. The mixture is filtered and the filtrate is distilled. What are the colours of the solid left in the filter and the liquid collected after distillation? liquid collected solid after distillation A blue blue B blue colourless C colourless blue D colourless colourless

Accepted Answer

B

Question 16

16 Which statement about fractional distillation is correct? A A chemical change occurs because new substances are formed. B A chemical change occurs because no new substances are formed. C A physical change occurs because new substances are formed. D A physical change occurs because no new substances are formed.

Accepted Answer

D

Question 17

17 The electronic structures of carbon and of hydrogen are shown. C H What is the formula of a compound formed between carbon and hydrogen? A CH2 B CH3 C CH4 D C4H

Accepted Answer

C

Question 18

18 The electrolysis of aqueous copper chloride is shown. Inert electrodes are used. bulb anode cathode aqueous copper chloride What is produced at the cathode? A chlorine B copper C hydrogen D oxygen

Accepted Answer

B

Question 19

19 Some white anhydrous copper(II) sulfate powder is put into a beaker of water and stirred. Which observation shows that the process is exothermic? A A blue solution forms. B A colourless solution forms. C The beaker becomes cooler. D The beaker becomes warmer.

Accepted Answer

D

Question 20

20 Ammonia is oxidised as shown. platinum wire ammonia oxides of nitrogen + + air water vapour heat The platinum is chemically unchanged at the end of the reaction. What is the reason for using platinum? A to absorb the heat from the reaction B to filter out oxygen from the air C to increase the rate of the reaction D to neutralise the ammonia

Accepted Answer

C

Question 21

21 In which reaction do both oxidation and reduction occur? A copper chloride  +  sodium hydroxide  →  copper hydroxide  +  sodium chloride B hydrochloric acid  +  sodium hydroxide  →  sodium chloride  +  water C iron oxide  +  carbon  →  iron  +  carbon dioxide D silver nitrate  +  potassium chloride  →  silver chloride  +  potassium nitrate

Accepted Answer

C

Question 22

22 Which substances react with dilute sulfuric acid to form a salt?

magnesium | ™agnesium | magnesium | magnesium
oxide carbonate chloride

A v 4 W, x

B WA V4 x y,

Cc v x W, y,

D x V4 W, y,

Accepted Answer

A

Question 23

23 Substance X is tested using aqueous barium ions under acidic conditions. A white precipitate forms. Which anion is present in X? A ammonium B carbonate C nitrate D sulfate

Accepted Answer

D

Question 24

24 Sodium is a metal in Group I of the Periodic Table. Some of the properties of sodium are listed. 1 It conducts electricity. 2 It forms white compounds. 3 It forms a basic oxide. 4 It is malleable. Nickel is a transition metal. Which properties are shown by nickel as well as by sodium? A 1, 2 and 3 B 1, 2 and 4 C 1, 3 and 4 D 2, 3 and 4

Accepted Answer

C

Question 25

25 Which gas is formed when ammonium nitrate is warmed with aqueous sodium hydroxide? A ammonia B ammonium C nitrogen D nitrogen dioxide

Accepted Answer

A

Question 26

26 Which word equation describes the manufacture of lime from limestone? A calcium carbonate  →  calcium hydroxide  +  carbon dioxide B calcium carbonate  →  calcium oxide  +  carbon dioxide C calcium hydroxide  →  calcium oxide  +  water D calcium oxide  +  carbon dioxide  →  calcium carbonate

Accepted Answer

B

Question 27

27 The structures of four hydrocarbons are shown. 1 2 H H H H H H H H C C C C H H C C C H H H H 3 4 H H H H H H H H C C C C C H H C C H H H H H H H H Which of the hydrocarbons change the colour of aqueous bromine? A 1 and 2 B 1 and 3 C 2 and 4 D 3 and 4

Accepted Answer

A

Question 28

28 Which graph represents the motion of an object that is accelerating? A B distance speed 0 0 0 time 0 time C D distance speed 0 0 0 time 0 time

Accepted Answer

D

Question 29

29 The scale diagram shows three identical solid blocks P, Q and R. The blocks have different areas of contact with the ground. P Q R Which block exerts the greatest pressure on the ground? A block P B block Q C block R D they all exert the same pressure

Accepted Answer

A

Question 30

30 The diagram shows a solid rectangular block made of material of density 2.0 g / cm3. 3.0 cm 2.0 cm 2.0 cm What is the mass of the block? A 2.0 g B 6.0 g C 14 g D 24 g

Accepted Answer

D

Question 31

31 A worker carries bricks up a ladder. The following quantities are known. ● the height the bricks are lifted up ● the time taken for the worker to lift the bricks ● the volume of the bricks ● the weight of the bricks Which quantities are needed to calculate the useful power produced by the worker as he carries the bricks up the ladder? A height, time and volume B height, time and weight C height, volume and weight D time, volume and weight

Accepted Answer

B

Question 32

32 A convector heater is fixed to a wall. Which diagram shows how warm air near the heater moves because of convection in the air? A B wall wall heater heater warm air warm air floor floor C D wall warm wall air warm air heater heater floor floor

Accepted Answer

C

Question 33

33 The diagram shows the direction of a wave that passes a particle. The particle is made to vibrate by the wave. The direction of vibration of the particle is shown. direction of wave direction of vibration of particle particle Which row states the type of wave that passes the particle, and gives an example of this type of wave? type of wave example A longitudinal light B longitudinal sound C transverse light D transverse sound

Accepted Answer

C

Question 34

34 The diagram represents a converging lens forming an image of an object. converging lens object Q R S P image Which distance is the focal length of the lens? A PQ B PR C QR D QS

Accepted Answer

C

Question 35

35 Which type of electromagnetic wave is emitted by a television remote controller? A infra-red B radio C visible light D X-rays

Accepted Answer

A

Question 36

36 A student claps his hands once when standing 100 m away from a large wall. The speed of sound in air is 330 m / s. How long after clapping does the student hear an echo? A 0.30 s B 0.61 s C 1.7 s D 3.3 s

Accepted Answer

B

Question 37

37 A battery of e.m.f. V is connected across a resistor of resistance R. There is a current in the resistor. V R current Which row shows two changes that both increase the current in the resistor? change 1 change 2 A decrease V decrease R B decrease V increase R C increase V decrease R D increase V increase R

Accepted Answer

C

Question 38

38 The circuit shows a battery and four lamps. All the lamps are lit. One lamp fails and all the lamps go out. Which lamp failed? A B D C

Accepted Answer

A

Question 39

39 Three charged balls P, Q and R are suspended by insulating threads. Ball P is negatively charged. Ball Q is brought close to ball P. The balls move away from each other. insulating thread P – Q Ball Q is now brought close to ball R. The balls move closer to each other. Q R What are the signs of the charges on ball Q and ball R? ball Q ball R A negative negative B negative positive C positive negative D positive positive

Accepted Answer

B

Question 40

40 The diagrams represent pairs of nuclei of some atoms. Which pair shows nuclei of different isotopes of the same element? A B key neutron proton C D

Accepted Answer

B

Question paper20 pages

Mark scheme3 pages

Questions as text

Q1 · The bicuspid valve in the heart stops blood from flowing in which direction?

Q2 · Four test-tubes contain the same volume of starch suspension but each test-tube is kept…

Question 3

Q4 · The test-tube shows gelatine with a layer of black dye

Q5 · The diagram shows parts of a mesophyll cell

Q6 · Self-pollination occurs when pollen is transferred from the male part of a flower to the…

Q7 · Which statement about food chains is correct?

Q8 · Food tests are performed on four substances

Q9 · Which substance causes an increase in blood glucose concentration?

Q10 · Humans must breathe air so that respiration can take place to release energy

Q11 · Predators that hunt at night have large eyes and ears

Q12 · Which statements about X chromosomes in humans are correct?

Q13 · Plants release oxygen as a waste product of photosynthesis

Q14 · Which statement about atoms and molecules is correct?

Q15 · Excess copper sulfate is mixed with water

Q16 · Which statement about fractional distillation is correct?

Q17 · The electronic structures of carbon and of hydrogen are shown

Q18 · The electrolysis of aqueous copper chloride is shown

Q19 · Some white anhydrous copper(II) sulfate powder is put into a beaker of water and stirred

Q20 · Ammonia is oxidised as shown

Q21 · In which reaction do both oxidation and reduction occur?

Q22 · Which substances react with dilute sulfuric acid to form a salt?

Q23 · Substance X is tested using aqueous barium ions under acidic conditions

Q24 · Sodium is a metal in Group I of the Periodic Table

Q25 · Which gas is formed when ammonium nitrate is warmed with aqueous sodium hydroxide?

Q26 · Which word equation describes the manufacture of lime from limestone?

Q27 · The structures of four hydrocarbons are shown

Q28 · Which graph represents the motion of an object that is accelerating?

Q29 · The scale diagram shows three identical solid blocks P, Q and R

Q30 · The diagram shows a solid rectangular block made of material of density 2.0 g / cm3

Q31 · A worker carries bricks up a ladder

Q32 · A convector heater is fixed to a wall

Q33 · The diagram shows the direction of a wave that passes a particle

Q34 · The diagram represents a converging lens forming an image of an object

Q35 · Which type of electromagnetic wave is emitted by a television remote controller?

Q36 · A student claps his hands once when standing 100 m away from a large wall

Q37 · A battery of e.m.f

Q38 · The circuit shows a battery and four lamps

Q39 · Three charged balls P, Q and R are suspended by insulating threads

Q40 · The diagrams represent pairs of nuclei of some atoms

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