JAMB and WAEC Chemistry questions: Air

37 questions with answers and explanations. Tap an option to check yourself.

All topics Acids, bases and salts · 58 Air · 37 Atomic structure and bonding · 59 Chemical combination · 58 Chemical equilibrium · 37 Chemistry and industry · 35 Electrolysis · 41 Energy changes · 38 Environmental pollution · 32 Kinetic theory of matter and gas laws · 45 Metals and their compounds · 47 Non-metals and their compounds · 45 Organic compounds · 72 Oxidation and reduction · 41 Rates of chemical reaction · 38 Separation of mixtures and purification · 42 Solubility · 36 Water · 39

Question 21· Air· JAMB
Argon makes up about what percentage of the air by volume?
Explanation and discussion
Question 22· Air· WAEC
The noble gas used in advertising signs because it glows red is
Explanation and discussion
Question 23· Air· JAMB
The most abundant gas in the atmosphere is:
Explanation and discussion
Question 24· Air· JAMB
Iron rusts only when it is exposed to
Explanation and discussion
Question 25· Air· JAMB
Weather balloons are filled with helium because it is
Explanation and discussion
Question 26· Air· WAEC
The percentage of oxygen in air by volume is about
Explanation and discussion
Question 27· Air· JAMB
Liquid air is fractionally distilled mainly to obtain
Explanation and discussion
Question 28· Air· JAMB
In terms of oxygen, the rusting of iron is
Explanation and discussion
Question 29· Air· JAMB
The part of the air that supports combustion is
Explanation and discussion
Question 30· Air· WAEC
Air is regarded as a mixture rather than a compound because
Explanation and discussion
Question 31· Air· WAEC
When air is passed over heated copper, the copper turns black because
Explanation and discussion
Question 32· Air· JAMB
The rusting of iron in moist air is an example of
Explanation and discussion
Question 33· Air· JAMB
The noble gases are unreactive because
Explanation and discussion
Question 34· Air· JAMB
100 cm³ of air is passed repeatedly over heated copper until there is no further change. The volume left is about
Explanation and discussion
Question 35· Air· JAMB
Two gases that contribute most to global warming are
Explanation and discussion
Question 36· Air· WAEC
The component of air that supports burning is
Explanation and discussion
Question 37· Air· JAMB
Which noble gas in the air is used to fill electric light bulbs?
Explanation and discussion

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JAMB and WAEC Chemistry questions: Air

Argon makes up about what percentage of the air by volume?

The noble gas used in advertising signs because it glows red is

The most abundant gas in the atmosphere is:

Iron rusts only when it is exposed to

Weather balloons are filled with helium because it is

The percentage of oxygen in air by volume is about

Liquid air is fractionally distilled mainly to obtain

In terms of oxygen, the rusting of iron is

The part of the air that supports combustion is

Air is regarded as a mixture rather than a compound because

When air is passed over heated copper, the copper turns black because

The rusting of iron in moist air is an example of

The noble gases are unreactive because

100 cm³ of air is passed repeatedly over heated copper until there is no further change. The volume left is about

Two gases that contribute most to global warming are

The component of air that supports burning is

Which noble gas in the air is used to fill electric light bulbs?