Using the reactivity series — Question Bank (Cambridge) — Cambridge IGCSE Physics 0625 Revision Notes & Topical Questions

Cambridge Lower Secondary Stage 9

Question 1
Paper Ref: 0620/22_Summer_2014_Q28

Four reactions that take place in the blast furnace to produce iron are shown.
Which reaction is used to keep the furnace hot?
A C+ Oz > CO;
B COz + C > 2CO
C Fe,03 + 3C > 2Fe + 3CO
D FeO; + 3CO – 2Fe + 3COz

Options:
A
B
C
D
Correct Key: A

Question 2
Paper Ref: 0620/11_Winter_2016_Q25

Impure iron from the blast furnace is converted to steel as shown.
oxygen
impure molten iron
Which statement about the process is correct?
A
B
c
D
Acidic oxides are added to remove alkaline impurities.
Coke is added as a reducing agent.
Oxygen is blown in to oxidise the impure iron.
The steel produced contains less carbon than the impure iron.

Options:
A
B
C
D
Correct Key: D

Question 3
Paper Ref: 5129/11_Winter_2020_Q22

A number of different reactions take place in the blast furnace.
The equations for some of these reactions are shown.
1
2
3
4
5
C + QO. > CO,
CaCOQ3 > CaO + CO,
CaO + SiO. > CaSiO;
CO, + C > 2CO
Fe.O03 + 3CO > 2Fe + 3CQO2
Which statement about these reactions is correct?
A Reaction 1 increases the temperature.
0 OO WW
Reaction 3 is a redox reaction.
Reaction 4 is thermal decomposition.
Reaction 5 removes impurities from the iron.

Options:
A
B
C
D
Correct Key: A

Question 4
Paper Ref: 0620/13_Winter_2024_Q30

Iron is extracted from its ore in the blast furnace.
Which statement about one of the reactions in the blast furnace is correct?
A Carbon monoxide is reduced to carbon dioxide.
B_Iron(II) oxide is reduced by carbon dioxide.
C Slag is produced when calcium carbonate reacts with carbon dioxide.
D
The reaction that heats the blast furnace produces carbon dioxide.

Options:
A
B
C
D
Correct Key: D

Question 5
Paper Ref: 0620/12_Summer_2022_Q26

Iron is extracted from hematite in the blast furnace at a temperature of about 1550°C.
Which equation shows the main reaction that increases the temperature in the furnace?
A CaCO; > CaO + CO₂
B C+ OQO,—> COQ,
C CQ, + C > 2CO
D Fe,03 + 3CO > 2Fe + 3CO,

Options:
A
B
C
D
Correct Key: B

Question 6
Paper Ref: 0620/11_Summer_2022_Q29

Which statement about the reactions in the blast furnace is correct?
A_ Carbon reacts with oxygen and heats the furnace.
Carbon monoxide removes the silicon dioxide impurity forming slag.
lron(III) oxide is oxidised to iron.
0 OO WW
Limestone reduces iron(II) oxide to iron.

Options:
A
B
C
D
Correct Key: A

Question 7
Paper Ref: 0620/21_Summer_2019_Q24

Three metal compounds, P, Q and R, are heated using a Bunsen burner.
The results are shown.
P colourless gas produced, which relights a glowing splint
Q_ colourless gas produced, which turns limewater milky
R noreaction
Which row shows the identity of P, @ and R?
magnesium carbonate potassium carbonate potassium nitrate
magnesium carbonate potassium nitrate potassium carbonate
potassium nitrate magnesium carbonate potassium carbonate
potassium nitrate potassium carbonate magnesium carbonate

Options:
A
B
C
D
Correct Key: C

Question 8
Paper Ref: 5129/11_Winter_2022_Q22

Which row describes the electrical conductivity of a metal when solid and when molten?
electrical conductivity electrical conductivity
when solid when molten
conductor conductor
conductor insulator
insulator conductor
insulator insulator

Options:
A
B
C
D
Correct Key: A

Question 9
Paper Ref: 0620/23_Summer_2019_Q26

Four metals, zinc, M, copper and magnesium, are reacted with aqueous solutions of their
nitrates.
The results are shown.
magnesium M copper ZINC
metal
nitrate nitrate nitrate nitrate
-magnesium | | ov | Key
copper | x | x |
What is the order of reactivity of these four metals starting with the most reactive?
A copper —> zinc —~ M —+ magnesium
B copper — M — zinc + magnesium
C magnesium > M — zinc > copper
D
magnesium — zinc + M — copper

Options:
A
B
C
D
Correct Key: D

Question 10
Paper Ref: 0620/12_Winter_2023_Q27

The list gives the order of some metals and hydrogen in the reactivity series.
Metal X is also included.
most reactive K
least reactive Cu
Which row shows the properties of metal X?
reacts with oxide reduced
dilute acids by carbon

Options:
A
B
C
D
Correct Key: B

Question 11
Paper Ref: 0620/11_Winter_2022_Q24

Metal M is placed between zinc and iron in the reactivity series.
Which row shows the reactions of M and its oxide?
M can be extracted
by heating its oxide
with carbon
M reacts with dilute
hydrochloric acid

Options:
A
B
C
D
Correct Key: D

Question 12
Paper Ref: 0620/21_Summer_2020_Q26

Sodium nitrate is a white crystalline solid that decomposes on heating.
sodium nitrate
heat
Which row describes the decomposition products formed when sodium nitrate is heated strongly?
— solid products gaseous products
sodium nitrite NO, and Oz
sodium nitrite Oz only
sodium oxide NO. and Oz
sodium oxide Oz only

Options:
A
B
C
D
Correct Key: B

Question 13
Paper Ref: 0620/21_Winter_2024_Q8

Which statement about the structure of metals explains why metals are malleable?
A
B
Cc
D
The electrons can move freely throughout the lattice.
The layers of metal ions can slide over each other.
The metal ions are positively charged.
There is a strong force of attraction between the metal ions and the electrons.

Options:
A
B
C
D
Correct Key: B

Question 14
Paper Ref: 0620/23_Summer_2024_Q27

Part of the reactivity series is shown.
potassium
Xx
calcium
Y
aluminium
Which metals are represented by X and Y?
copper magnesium
sodium magnesium
sodium silver
copper silver

Options:
A
B
C
D
Correct Key: B

Question 15
Paper Ref: 0620/21_Winter_2021_Q28

Which statements about the thermal decomposition of copper(II) nitrate are correct?
1 A brown gas is given off.
2 Agas which relights a glowing splint is given off.
3 The solid residue is an acidic oxide.
A 1only B iand2 C 1and3 D 2and3

Options:
A
B
C
D
Correct Key: B

Question 16
Paper Ref: 0620/22_Summer_2018_Q26

Which statement about the industrial extraction of zinc is correct?
A Cryolite is added to lower the melting point.
Molten zinc oxide is electrolysed.
Zinc oxide is heated with coke.
0 9 DW
Zinc sulfide is heated with coke.

Options:
A
B
C
D
Correct Key: C

Question 17
Paper Ref: 0620/22_Summer_2013_Q26

A substance, X, has the following properties.
1 It has a high melting point.
2 It conducts electricity in the solid and liquid states.
3 Itis malleable.
4 Ithad a high density.
What is X?
A aceramic
B copper
C graphite
D
sodium chloride

Options:
A
B
C
D
Correct Key: B

•1•.• • • •[•▍• •C•P• •M•a•r•c•h• •2•0•2•6• •P•2• • •·• • •Q•2• • •P•a•r•t• •(•b•)• • •·• • •2•0•2•6• • •·• • •L•o•w•e•r• •S•e•c• •0•8•9•3•]• • • • • • •S•i•l•v•e•r• •n•i•t•r•a•t•e• •i•s• •m•o•r•e• •r•e•a•c•t•i•v•e• •t•h•a•n• •m•a•g•n•e•s•i•u•m• •n•i•t•r•a•t•e•.• •1• •m•o•r•e• •t•h•a•n• •o•n•e• •a•n•s•w•e•r• •t•i•c•k•e•d• •=• •0• •m•a•r•k•s• •••c•c•e•p•t• •a•n•y• •i•n•d•i•c•a•t•i•o•n• •o•f• •t•h•e• •c•o•r•r•e•c•t• •a•n•s•w•e•r•,• •S•i•l•v•e•r• •i•s• •m•o•r•e• •r•e•a•c•t•i•v•e• •t•h•a•n• •m•a•g•n•e•s•i•u•m•.• •e•.•g•.• •c•i•r•c•l•i•n•g• •o•r• •u•n•d•e•r•l•i•n•i•n•g•,• •b•u•t• •t•i•c•k•i•n•g• •t•a•k•e•s• •p•r•e•c•e•d•e•n•c•e• •M•a•g•n•e•s•i•u•m• •i•s• •m•o•r•e• •r•e•a•c•t•i•v•e• •t•h•a•n• •s•i•l•v•e•r•.• •• •M•a•g•n•e•s•i•u•m• •n•i•t•r•a•t•e• •i•s• •m•o•r•e• •r•e•a•c•t•i•v•e• •t•h•a•n• •s•i•l•v•e•r• •n•i•t•r•a•t•e•.•

•2•.• • • •[•▍• •P•T• •S•7• •2•0•2•0• •P•2• • •·• • •Q•3• • •P•a•r•t• •(•a•)• • •·• • •2•0•2•0• • •·• • •L•o•w•e•r• •S•e•c• •s•o•u•r•c•e• •a•d•d•i•t•i•o•n•]• • • • • • •N•o• •m•a•t•c•h•i•n•g• •m•a•r•k•-•s•c•h•e•m•e• •e•n•t•r•y• •w•a•s• •f•o•u•n•d• •i•n• •M•a•r•k•_•S•c•h•e•m•e•s•.•d•o•c•x•.•