Cambridge IGCSE Science - Combined 0653 — 2011 May/June Paper 1 · Variant 2

Question 1

1 Where does most of the water enter a plant? A guard cells B mesophyll cells C root hair cells D xylem vessels

Accepted Answer

C

Question 2

2 Which list shows substances each of which can diffuse into and out of cells? A amino acids, glucose and oxygen B carbon dioxide, cellulose and glucose C carbon dioxide, oxygen and starch D carbon monoxide, oxygen and protein

Accepted Answer

A

Question 3

3 Which breakdown processes occur inside cells, and which occur outside cells? large molecules to small breakdown of glucose to molecules for absorption release energy A inside inside B inside outside C outside inside D outside outside

Accepted Answer

C

Question 4

4 The diagram shows a palisade cell.

Which parts are found in plant cells and not in animal cells?

1 2 3 4 5 6
A v x v v x x
B v x v x v x
Cc x v x v x v
D x v x x v v

key
¥ = found in plant cells only

X = not found in plant cells only

Accepted Answer

C

Question 5

5 The diagram shows the arrangement of cells in a vertical section of a leaf of a green plant. No cell contents are shown. 1 2 3 4 5 In which cells is light energy turned into chemical energy? A 1, 2 and 4 B 1, 3 and 4 C 2, 3 and 5 D 2, 4 and 5

Accepted Answer

C

Question 6

6 The diagram shows the human heart in section. Which chamber of the heart pumps blood the greatest distance? A B D C

Accepted Answer

C

Question 7

7 The statements describe events that occur when glucose is absorbed from the alimentary canal. 1 Blood sugar level falls. 2 Blood sugar level rises. 3 Insulin is released. 4 Liver removes glucose from the blood. Which is the correct order of events? A 2 → 3 → 4 → 1 B 2 → 4 → 3 → 1 C 3 → 2 → 4 → 1 D 4 → 1 → 3 → 2

Accepted Answer

A

Question 8

8 Which health problems may result from smoking cigarettes?

bronchitis emphysema lung cancer
A v v v
B v x x
Cc x v v
D x v x

key
v/=yes
X =no

Accepted Answer

A

Question 9

9 The diagram shows a section through a flower. P Q R Where are the male gametes made and where are the female gametes made? male gametes female gametes A P Q B P R C Q P D Q R

Accepted Answer

B

Question 10

10 Which feature must all members of the same clone of a plant have in common? A They all grow at the same rate. B They all grow from seeds. C They all have fruits of the same size. D They all have the same alleles.

Accepted Answer

D

Question 11

11. Which type or types of variation in organisms can be inherited?

variation caused by | variation caused by

genes the environment
A Jv v key
B v x v=yes
Cc x v X =no
D x x

Accepted Answer

B

Question 12

12 What does the intra-uterine device (IUD) prevent? A fertilisation of the egg B implantation of the zygote C release of eggs from the ovary D sperms entering the uterus

Accepted Answer

B

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 diagrams show four different mixtures of gases. Which diagram represents a mixture containing only elements? A B C D key different types of atom

Accepted Answer

C

Question 15

15 Which equation is correctly balanced and shows the correct formulae? A H2 + Cl 2 → H2Cl 2 B H2 + Cl 2 → 2HCl C 2H + 2Cl 2 → H2Cl 2 D 2H + Cl 2 → 2HCl 2

Accepted Answer

B

Question 16

16 An atom is represented by the symbol 19 9 X. How many electrons, neutrons and protons are in this atom? electrons neutrons protons A 9 9 9 B 9 10 9 C 10 10 9 D 19 9 10

Accepted Answer

B

Question 17

17 Element X reacts with element Y to form compound XY. It also reacts with element Z to form compound XZ. Compound XY is an electrolyte and compound XZ is a non-electrolyte. Which row correctly shows whether elements X, Y and Z are metals or non-metals? metals non-metals A X Y, Z B X, Z Y C Y X, Z D Y, Z X

Accepted Answer

C

Question 18

18 The position in the Periodic Table of an element Q is shown. Q Which description of Q is correct? A It is green and has diatomic molecules. B It is soft and a good electrical conductor. C It is very dense and has a high melting point. D It reacts violently with cold water.

Accepted Answer

C

Question 19

19 Substance X is added to dilute sulfuric acid until reaction is complete. The graph shows how the pH changes during the reaction. pH 7 0 0 amount of X added Which type of substance is X? A base B catalyst C indicator D salt

Accepted Answer

A

Question 20

20 Metal X reacts vigorously with dilute hydrochloric acid. Salts of metal X give a red colour in a flame test. What is X? A calcium B copper C potassium D sodium

Accepted Answer

A

Question 21

21 A new alloy is resistant to corrosion. It costs about the same as aluminium but it is slightly poisonous. Its density compared with stainless steel and aluminium is shown. aluminium new alloy stainless steel density / g / cm3 2.7 2.8 7.9 What could this new alloy be used to make? A aircraft frames B cutlery C electrical insulators D food containers

Accepted Answer

A

Question 22

22 Carbon monoxide gas is present in car exhausts. Why is this gas a pollutant? A It causes acid rain. B It causes asthma. C It damages buildings. D It is poisonous.

Accepted Answer

D

Question 23

23 Many industrial reactions use a catalyst.

What are the advantages of using a catalyst?

0 0O WD >

they are not used up
in the reaction

v

v
x
x

they increase speed
of the reaction

v

x
v
v

they increase the
amount of product

x < * x

key
Jv = true
X = not true

Accepted Answer

A

Question 24

24 Which chemical equation represents a thermal decomposition reaction? A CH4 + 2O2 → CO2 + 2H2O B HCl + NaOH → NaCl + H2O C H2 + Cl 2 → 2HCl D MgCO3 → MgO + CO2

Accepted Answer

D

Question 25

25 Element X is non-metallic. It is used in the purification of water. It is made by electrolysis of one of its salts. At which electrode is it formed and what is its colour? electrode colour A anode red B anode yellow-green C cathode red D cathode yellow-green

Accepted Answer

B

Question 26

26 Plastics are used as substitutes for natural materials. Which statement about the manufacture of plastics is correct? A Plastics are made by breaking long-chain molecules into shorter chain ones. B Plastics are made by joining polymers together. C Plastics are made by fractional distillation of crude oil (petroleum). D Plastics are made by joining short-chain molecules together.

Accepted Answer

D

Question 27

27 Kerosene is a hydrocarbon fuel obtained from crude oil. Which statement is correct? A Kerosene burns to form carbon dioxide and water. B Kerosene contains the elements carbon, hydrogen and oxygen. C Kerosene is used as a fuel for cars. D The combustion of kerosene is an endothermic reaction.

Accepted Answer

A

Question 28

28 Which is the unit for force and which is the unit for weight? force weight A kg kg B kg N C N kg D N N

Accepted Answer

D

Question 29

29 A car takes 30 minutes to travel a distance of 60 km. What is the average speed of the car? A 2.0 km / hour B 30 km / hour C 120 km / hour D 1800 km / hour

Accepted Answer

C

Question 30

30 The graph shows how the speed of a car changes with time. 12 speed Q R m / s 10 8 6 4 2 P S 0 0 2 4 6 8 10 12 14 16 18 20 time / s Between which points on the graph is the acceleration zero? A PQ only B QR only C RS only D PQ and RS

Accepted Answer

B

Question 31

31 A glass tank contains some water. water V T Q U S R The length QR and the width RS of the tank are known. What other distance needs to be known in order to be able to calculate the volume of the water? A ST B SV C TU D TV

Accepted Answer

A

Question 32

32 Which row shows the input energy and the output energy for a microphone? input energy output energy A electrical potential B electrical sound C sound electrical D sound potential

Accepted Answer

C

Question 33

33 A man warms himself by a fire. Which method of heat transfer supplies the most heat energy to him? A conduction through the air B convection by moving air C evaporation by moving water vapour D infra-red radiation

Accepted Answer

D

Question 34

34 Which transformer would change a 240 V a.c. input into a 15 V a.c. output? A B 800 turns 40 turns 1000 turns 25 turns C D 1200 turns 75 turns 2400 turns 15 turns

Accepted Answer

C

Question 35

35 In which diagram will the two light rays shown both pass through the principal focus (focal point) of the lens after passing through the lens? A B C D

Accepted Answer

A

Question 36

36 A circuit diagram contains the following symbol. What does this symbol represent? A a fixed resistor B a fuse C a relay D a variable resistor

Accepted Answer

B

Question 37

37 The diagram shows a circuit with three ammeters, X, Y and Z. Z A X A 5 Ω Y A 10 Ω The ammeter readings are 1 A, 2 A and 3 A. Which ammeter has which reading? X Y Z A 1 A 2 A 3 A B 3 A 2 A 1 A C 2 A 3 A 1 A D 2 A 1 A 3 A

Accepted Answer

D

Question 38

38 The diagram shows an electric circuit. S1 X S2 S3 Which switches will have to be closed so that only bulb X will light? A S1, S2 and S3 B S1 and S2 only C S1 and S3 only D S2 and S3 only

Accepted Answer

B

Question 39

39 Which type of radiation has the greatest ionising effect, and which is the most penetrating? greatest ionising most penetrating effect A alpha-particles alpha-particles B alpha-particles gamma-rays C gamma-rays alpha-particles D gamma-rays gamma-rays

Accepted Answer

B

Question 40

40 A student copies a diagram of the electromagnetic spectrum but makes a mistake. radio micro- infra-red visible ultraviolet gamma X-rays waves waves waves light waves rays large wavelength small wavelength Which two names should be interchanged so that the order is correct? A infra-red waves and ultraviolet waves B radio waves and infra-red waves C radio waves and visible light D X-rays and ultraviolet waves

Accepted Answer

D

Question paper16 pages

Mark scheme2 pages

Questions as text

Q1 · Where does most of the water enter a plant?

Q2 · Which list shows substances each of which can diffuse into and out of cells?

Q3 · Which breakdown processes occur inside cells, and which occur outside cells?

Q4 · The diagram shows a palisade cell

Q5 · The diagram shows the arrangement of cells in a vertical section of a leaf of a green…

Q6 · The diagram shows the human heart in section

Q7 · The statements describe events that occur when glucose is absorbed from the alimentary…

Q8 · Which health problems may result from smoking cigarettes?

Q9 · The diagram shows a section through a flower

Q10 · Which feature must all members of the same clone of a plant have in common?

Q11 · Which type or types of variation in organisms can be inherited?

Q12 · What does the intra-uterine device (IUD) prevent?

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

Q14 · The diagrams show four different mixtures of gases

Q15 · Which equation is correctly balanced and shows the correct formulae?

Q16 · An atom is represented by the symbol 19 9 X

Q17 · Element X reacts with element Y to form compound XY

Q18 · The position in the Periodic Table of an element Q is shown

Q19 · Substance X is added to dilute sulfuric acid until reaction is complete

Q20 · Metal X reacts vigorously with dilute hydrochloric acid

Q21 · A new alloy is resistant to corrosion

Q22 · Carbon monoxide gas is present in car exhausts

Q23 · Many industrial reactions use a catalyst

Q24 · Which chemical equation represents a thermal decomposition reaction?

Q25 · Element X is non-metallic

Q26 · Plastics are used as substitutes for natural materials

Q27 · Kerosene is a hydrocarbon fuel obtained from crude oil

Q28 · Which is the unit for force and which is the unit for weight?

Q29 · A car takes 30 minutes to travel a distance of 60 km

Q30 · The graph shows how the speed of a car changes with time

Q31 · A glass tank contains some water

Q32 · Which row shows the input energy and the output energy for a microphone?

Q33 · A man warms himself by a fire

Q34 · Which transformer would change a 240 V a.c

Q35 · In which diagram will the two light rays shown both pass through the principal focus…

Q36 · A circuit diagram contains the following symbol

Q37 · The diagram shows a circuit with three ammeters, X, Y and Z

Q38 · The diagram shows an electric circuit

Q39 · Which type of radiation has the greatest ionising effect, and which is the most…

Q40 · A student copies a diagram of the electromagnetic spectrum but makes a mistake

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