Air Around us

Which gas do fire extinguishers contain?

• Helium

• Carbon-Dioxide

• Hydrogen

• Nitrogen

• Oxygen

Which gas to plants breathe?

• Carbon- Dioxide

• Hydrogen

• Oxygen

• Nitrogen

When a person goes on a higher altitude the air gets

Why do animals living in deep burrows emerge out of the soil when it rains?

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What are the uses of a windmill?

• run flour factories

• generate electricity

• create water

• draw water from tube mills

Apart from Nitrogen, which is the other major gas present in the air.

• Nitrogen

• Hydrogen

• Water Vapour

• Oxygen

Apart from the different gases what does air contain?

• Smoke

• Water

• Dust

• Fire

Water dissolves in the air. (True/False)

If air is in motion what do we call it?

Define atmosphere.

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