Question 1

Which is the most reactive of these three metals?

Accepted Answer

Lithium

Answer

Aluminium

Answer

Zinc

Answer

Copper

Question 2

What are the reactants in the thermite reaction?

Accepted Answer

Aluminium and iron oxide

Answer

Aluminium oxide and iron

Answer

Aluminium oxide and iron oxide

Answer

Aluminium and iron

Question 3

Which metal can be displaced from its ores by heating with carbon?

Accepted Answer

Iron

Answer

Aluminium

Answer

Calcium

Answer

Magnesium

Question 4

Which of the following combinations will result in a displacement reaction?

Accepted Answer

Magnesium and copper sulfate

Answer

Zinc and magnesium nitrate

Answer

Copper and zinc nitrate

Answer

Carbon and calcium oxide

Question 5

What has been reduced in this reaction: iron oxide + carbon → iron + carbon monoxide?

Accepted Answer

Iron oxide

Answer

carbon monoxide

Answer

Iron and carbon

Answer

carbon

Question 6

What is the oxidising agent in this reaction: lead oxide + carbon → lead + carbon monoxide?

Accepted Answer

Lead oxide

Answer

carbon monoxide

Answer

carbon

Answer

Lead

Question 7

Which three substances are essential for rusting to take place?

Accepted Answer

Iron, oxygen, water

Answer

Iron, salt and water

Answer

Steel, water, acid

Answer

Steel, oxygen, acid

Question 8

Why does aluminium not corrode as quickly as steel and iron?

Accepted Answer

It has a protective layer of aluminium oxide

Answer

it is not reactive metal

Answer

It is not very reactive

Answer

It is always painted

Question 9

Which metal could be used for the sacrificial protection of iron?

Accepted Answer

Magnesium

Answer

Tin

Answer

Copper

Answer

Lead

Question 10

Fe2O3 + 3CO → 2Fe + 3CO2

Choose from the grid the term used to describe the removal of oxygen from iron(III) oxide

Accepted Answer

reduction

Answer

oxidation

Answer

combustion

Answer

decomposition

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