Cambridge IGCSE Science - Combined 0653 — 2011 Oct/Nov Paper 1 · Variant 2

Question 1

1 Which leaf tissue has specialised cells that surround stomata? A epidermis B palisade mesophyll C phloem D xylem

Accepted Answer

A

Question 2

2 Which parts of a cell control its activities and control what enters and leaves it? controls cell’s controls what enters activities and leaves the cell A chloroplast cell surface membrane B chloroplast cell wall C nucleus cell surface membrane D nucleus cell wall

Accepted Answer

C

Question 3

3 Which part of a plant cell is made of cellulose? A cell membrane B cell wall C chloroplast D nucleus

Accepted Answer

B

Question 4

4 The graph shows the effect of temperature on the rate of an enzyme-controlled reaction. 4 3 rate of reaction 2 5 1 temperature Where on the graph has all the enzyme been denatured? A 1 B 2 and 3 C 3 and 4 D 5

Accepted Answer

D

Question 5

5 When a leaf is photosynthesising, in which direction do gases diffuse through the stomata? carbon dioxide oxygen A in in B in out C out in D out out

Accepted Answer

B

Question 6

6 What happens during digestion?

large pieces of food are
broken into small pieces

large molecules are broken
into small molecules

0 0O WwW D>

v

v
x
x

v

x
v
x

Accepted Answer

A

Question 7

7 Oxygenated blood returns to the heart from the lungs in vessel X and leaves the heart to circulate around the body in vessel Y. What are X and Y? X Y A aorta pulmonary vein B pulmonary artery vena cava C pulmonary vein aorta D vena cava pulmonary artery

Accepted Answer

C

Question 8

8 Which method of family planning is also likely to reduce the risk of the spread of syphilis? A condom B intra-uterine device (IUD) C pill D sterilisation

Accepted Answer

A

Question 9

9 Aspecies of animal reproduces both sexually and asexually.

Which offspring will be clones?

offspring from sexual offspring from
reproduction asexual reproduction
A v v
B v x
Cc x v
D x x

Accepted Answer

C

Question 10

10 The table shows the level of alcohol in a person’s blood after drinking two litres of beer. time after drinking alcohol in the blood beer (hours) (grams / dm3) 1 7 2 5 3 3 4 0 How long will it be (in hours) before the person’s reaction time returns to normal? A 0 to 1 B 1 to 2 C 2 to 3 D 3 to 4

Accepted Answer

D

Question 11

11 The diagram shows a food chain. grass antelope lion Which types of energy are represented by the black arrows and by the white arrows? black arrows white arrows A chemical heat B chemical light C heat chemical D light chemical

Accepted Answer

A

Question 12

12 Which process reduces soil erosion on hilly ground? A cutting down the trees B increasing the number of grazing animals C ploughing up and down the hilly ground D terracing the hilly ground

Accepted Answer

D

Question 13

13 Albino humans cannot make any pigment in their skin. A pale-skinned student, who is not an albino, sits in the sun on a number of days. The student’s skin becomes suntanned (darker). What causes this suntanning to happen? A the environment and the student’s albino alleles B the environment and the student’s non-albino alleles C the environment only D the student’s genes only

Accepted Answer

B

Question 14

14 A model of a molecule is shown. key = hydrogen = nitrogen Which description and formula are correct for this molecule? description formula A compound NH2 B compound N2H4 C mixture NH2 D mixture N2H4

Accepted Answer

B

Question 15

15 Element X has a nucleon number of 40. The electron arrangement of element X is 2,8,8. Which statements about element X are correct? 1 It has 40 neutrons in its nucleus. 2 It has 2 electrons in its outer shell. 3 It is unreactive. 4 It is in Group 0 of the Periodic Table. A 1 and 2 B 1 and 3 C 2 and 4 D 3 and 4

Accepted Answer

D

Question 16

16 Which diagram shows how a mixture of dyes in a food colouring are separated? A B filter paper filter paper spot of food colouring water food colouring C D spot of food colouring filter paper filter paper spot of food colouring water water

Accepted Answer

D

Question 17

17 Sulfur dioxide is formed as a pollutant when fossil fuels are burned.

Which properties does sulfur dioxide have?

toxic acidic corrosive

v v v

0 0O WD >

v v x
v x x
x x x

Accepted Answer

A

Question 18

18 Which equation is correctly balanced? A 2Al + 3Cl 2 → 2Al Cl 3 B Fe2O3 + 3C → 2Fe + 3CO2 C KCl + Br2 → KBr + Cl 2 D Na + H2O → NaOH + H2

Accepted Answer

A

Question 19

19 A soft metal reacts vigorously with cold water. Which letter shows the position of this metal in the Periodic Table? D C B A

Accepted Answer

D

Question 20

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

Accepted Answer

A

Question 21

21 In an experiment the elements calcium, copper, potassium and sodium were separately reacted with water. In a second experiment a flame test was carried out on compounds of each of the elements. compound of element element water Bunsen burner Which row correctly shows the reaction of the elements with water and the colour of the flame? reaction with colour of the element water flame A calcium vigorous green B copper no reaction red C potassium vigorous lilac D sodium no reaction yellow

Accepted Answer

C

Question 22

22 The diagram shows the electrolysis of lead(II) bromide using inert electrodes. Lead is formed at electrode X and coloured fumes at electrode Y. electrode X electrode Y coloured fumes lead bromide lead Which statement about the electrolysis of lead(II) bromide is correct? A Electrode X is the anode. B The colour of the fumes is brown. C The lead(II) bromide is in aqueous solution. D The mass of the lead(II) bromide does not change during the reaction.

Accepted Answer

B

Question 23

23 When compound X is added to pure water, the pH increases. Which formula could not be a correct formula for X? A HNO3 B KOH C NaOH D NH3

Accepted Answer

A

Question 24

24 Ethene burns as shown. C2H4(g) + 3O2(g) → 2CO2(g) + 2H2O(l) What happens to ethene in this reaction? A decomposition B neutralisation C oxidation D reduction

Accepted Answer

C

Question 25

25 Many molecules of X combine to form a single molecule Y as shown in the equation. n X → Y (n is a very large number) Which terms best describe X and Y in this reaction? X Y A fraction monomer B monomer fraction C monomer polymer D polymer fraction

Accepted Answer

C

Question 26

26 Which change does not alter the rate of reaction between zinc and dilute sulfuric acid? A addition of a catalyst B change in concentration of the acid C change in atmospheric pressure D change in temperature

Accepted Answer

C

Question 27

27 The structure of a molecule is shown. H H H H H C C C C H H H H H Which term correctly describes this molecule? A hydrocarbon B monomer C petroleum D polymer

Accepted Answer

A

Question 28

28 The table gives information about a liquid in a container. depth of liquid 10 cm mass of liquid 30 g temperature of liquid 25 °C volume of liquid 20 cm3 What is the density of the liquid? A 0.33 cm / g B 1.2 g / °C C 1.5 g / cm3 D 3.0 g / cm

Accepted Answer

C

Question 29

29 Some water is poured into four tubes of different cross-sectional areas. Which tube holds the largest volume of water? A B C D area = 10 cm2 area = 20 cm2 area = 30 cm2 area = 40 cm2 6 cm 4 cm 3 cm 2 cm

Accepted Answer

C

Question 30

30 What is the meaning of the weight of an object? A the density of the material from which it is made B the force exerted on it by gravity C the mass of the matter it contains D the pressure it exerts on the ground

Accepted Answer

B

Question 31

31 Which source releases energy by burning when it is used in the process of generating electricity? A a fossil fuel B hydroelectric C nuclear D solar

Accepted Answer

A

Question 32

32 An object travels 6.0 km in 2 minutes. What is its speed? A 0.050 m / s B 3.0 m / s C 50 m / s D 3000 m / s

Accepted Answer

C

Question 33

33 When flying, some birds use warm air currents to gain height. What is the cause of these currents? A conduction B convection C evaporation D radiation

Accepted Answer

B

Question 34

34 Diagram 1 shows two identical resistors R1 and R2 connected in series in a circuit. R2 is then removed, as shown in diagram 2. diagram 1 diagram 2 A A R1 R2 R1 V V How do the readings on the ammeter and the voltmeter change when R2 is removed? ammeter voltmeter A decreases decreases B decreases increases C increases decreases D increases increases

Accepted Answer

D

Question 35

35 Why is a fuse used in an electric circuit in a house? A to increase the resistance of the circuit B to keep the power used to a minimum value C to prevent a short circuit from occurring D to stop the cables overheating

Accepted Answer

D

Question 36

36 Which row shows two of the essential items used in the construction of a transformer?

iron core permanent primary coil | — slip rings
magnet
A v v
B v v
Cc v v
D v v

Accepted Answer

B

Question 37

37 A ray of light passes through the centre of a thin converging lens. In which direction does the ray leave the lens? ray A B C D

Accepted Answer

C

Question 38

38 The diagram shows the spectrum of electromagnetic waves. Which labelled region represents gamma rays? micro visible A B C X-rays D waves light increasing frequency

Accepted Answer

D

Question 39

39 Which is the best description of a wave that is a quiet, high-pitched sound? A large amplitude and high frequency. B large amplitude and low frequency. C small amplitude and high frequency. D small amplitude and low frequency.

Accepted Answer

C

Question 40

40 Which nuclear process occurs in the Sun, and which process is used in a nuclear power station? in the Sun in a nuclear power station A fission fission B fission fusion C fusion fission D fusion fusion

Accepted Answer

C

Question paper16 pages

Mark scheme2 pages

Questions as text

Q1 · Which leaf tissue has specialised cells that surround stomata?

Q2 · Which parts of a cell control its activities and control what enters and leaves it?

Q3 · Which part of a plant cell is made of cellulose?

Q4 · The graph shows the effect of temperature on the rate of an enzyme-controlled reaction

Q5 · When a leaf is photosynthesising, in which direction do gases diffuse through the stomata?

Q6 · What happens during digestion?

Q7 · Oxygenated blood returns to the heart from the lungs in vessel X and leaves the heart to…

Q8 · Which method of family planning is also likely to reduce the risk of the spread of…

Q9 · Aspecies of animal reproduces both sexually and asexually

Q10 · The table shows the level of alcohol in a person’s blood after drinking two litres of beer

Q11 · The diagram shows a food chain

Q12 · Which process reduces soil erosion on hilly ground?

Q13 · Albino humans cannot make any pigment in their skin

Q14 · A model of a molecule is shown

Q15 · Element X has a nucleon number of 40

Q16 · Which diagram shows how a mixture of dyes in a food colouring are separated?

Q17 · Sulfur dioxide is formed as a pollutant when fossil fuels are burned

Q18 · Which equation is correctly balanced?

Q19 · A soft metal reacts vigorously with cold water

Q20 · Which two elements do not form an alloy?

Q21 · In an experiment the elements calcium, copper, potassium and sodium were separately…

Q22 · The diagram shows the electrolysis of lead(II) bromide using inert electrodes

Q23 · When compound X is added to pure water, the pH increases

Q24 · Ethene burns as shown

Q25 · Many molecules of X combine to form a single molecule Y as shown in the equation

Q26 · Which change does not alter the rate of reaction between zinc and dilute sulfuric acid?

Q27 · The structure of a molecule is shown

Q28 · The table gives information about a liquid in a container

Q29 · Some water is poured into four tubes of different cross-sectional areas

Q30 · What is the meaning of the weight of an object?

Q31 · Which source releases energy by burning when it is used in the process of generating…

Q32 · An object travels 6.0 km in 2 minutes

Q33 · When flying, some birds use warm air currents to gain height

Q34 · Two identical resistors R1 and R2 connected in series in a circuit

Q35 · Why is a fuse used in an electric circuit in a house?

Q36 · Which row shows two of the essential items used in the construction of a transformer?

Q37 · A ray of light passes through the centre of a thin converging lens

Q38 · The diagram shows the spectrum of electromagnetic waves

Q39 · Which is the best description of a wave that is a quiet, high-pitched sound?

Q40 · Which nuclear process occurs in the Sun, and which process is used in a nuclear power…

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