The layer of air around the earth is known as ______.

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The layer of air around the earth is known as atmosphere.

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Is there an error in this question or solution?

Fill in the blank:

_____________ discovered the oxygen gas.

What is wind?

What do you observe when a burning candle is covered with an inverted jar.

Give two uses of the following component present in air:

carbon dioxide

How is air useful to scooters and cars.?

Write ‘true’ or ‘false for the following;

Air is a compound.

Tick (√) the correct alternative from the choice given for the following statement.

Rust is

Match the statements in List I with the correct answer from List II.

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

Draw a neat labelled diagram for the following experiment.

To prove that oxygen is non-combustible, but supports combustion.

Mention two advantages of wind energy.