Air is a mixture of many gases, dust particles and water vapour.
What percentage of air is accounted by carbon dioxide, water vapour, dust particles and other gases?
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?
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