Science True Or False.[1 Marks Each]

Dust particles are always present in air. True/ False.

A policeman, controlling the traffic wears a mask to prevent the dust particles from entering his respiratory system through breathing. True/ False

A firki rotates only in an open area or in a closed room with the ceiling fan switched on. True/ False

Plants do not respire. True/ False

Air is a compound and not an element. True/ False

Air is an opaque material. True/ False

Plants produce oxygen through photosynthesis. True/ False

Air contains dust particles, while inhaling air we also inhale dust particles. Give reason in support of the statement, whether it is True/ False?

The major part of air is nitrogen. True/ False

Air is necessary for burning things. True/ False

Air becomes thinner and thinner as we go higher and higher from the surface of earth. True/ False

Air contains water vapours. True/ False

Open areas allow air to move here and there. True/ False

Nitrogen supports burning of a candle. True/ False.

Moving air helps in flying kite. True/ False.

We can see air around us. True/ False.

All living organisms require air for their survival. True/ False