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Dry cobalt chloride paper change from blue to pink in the presence of water
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Breathed air is warmer than unbreathed air
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Breathed air is saturated with water vapour
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The layers of air surrounding the Earth is called the ( )
atmosphere
Neon belongs to a group of gas called the ( )which makes up about 0.9% of the air
noble gases
We can blow out the flame of a burning splint to get a (. )splint which relight in ( )
oxygen
Carbon dioxide turns lime water ( )
milky
Breathed air contains more ( )and water vapour than unbreathed air .its temperature is ( )than that of Unbreathed air
carbon dioxide,higher
Which of the following gas
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