MEDIUM
Earn 100

What is air made up of?

Important Questions on Pollution of Air and Water

HARD

Draw a neat labelled diagram for the following experiment.

To determine the component of air used up in burning by using phosphorus and a bell jar.

EASY
Which of the following gases is not a constituent of the air?
MEDIUM
What are the sources of air pollution?
EASY
State the utility of water vapour.
MEDIUM

Tabulate the various components of the air, Including the components with variable composition.

EASY
There has been a vast change in the environment in recent years due to construction.
MEDIUM
Write a short note on "Industrial Air Pollution”.
MEDIUM

Form similar pair of words.

Nitrogen and _____ / oxygen and 21%.

HARD
Explain Lavoisier’s experiment which provided evidence to the discovery of components in air.
MEDIUM
List the composition of gases in air with their uses.
MEDIUM
Describe simple experiments to show the presence of water vapor in air using a glass tumbler and ice.
EASY
Name the important scientists & their studies which led to the discovery of the components of air.
MEDIUM
Methane is naturally found in the air. 
HARD

Match the following.

List I List II
1. The constituent of air which is around 0.02%. A. Nitrogen
2. The constituent of air which is inert or unreactive. B. Oxygen
3. The constituent of air which is non-combustible, but supports combustion. C. Sulphur dioxide
4. A pollutant in air responsible for acid rain. D. Carbon dioxide
 
5. The main rare gas present in air. E. Argon
MEDIUM

Explain the composition of air with the help of a diagram.

EASY
The most abundant gas present in the air is _____.
HARD
The molecular weight of air will be

(the components of air given as N2-78%,O2-21%,Ar-09% and CO2-0.1%)
MEDIUM

Compare the main components of air i.e. nitrogen, oxygen & carbon dioxide with reference to their density & solubility, nature & reactivity.