Air is a mixture of many gases, dust particles and water vapour.
Statement I: Air is a mixture of gases, water vapour and dust particles.
Statement II: Air is composed of only one gas that is nitrogen.
Statement III: Air is composed of two gases, nitrogen and oxygen only.
Which of the above statement is incorrect?
What percentage of air is accounted by carbon dioxide, water vapour, dust particles and other gases?
Question 7
Clouds are
(a) tiny drops of water floating in air (b) mixture of dust and water vapour (c) particles of water vapour (d) rain drops in air