Warmer air becomes lighter and so it rises whereas cold air sinks.
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Which of the following is/are not correctly matched:
Which of the following is/are true? I. Benzene hexachloride is a non-biodegradable pollutant. II. Anthropogenic air pollutants are natural in origin. III. Carbon monoxide is a primary air pollutant. IV. Sulphur dioxide causes brown air effect during traffic congestion in cities.
Which of the following is/are present in air?
A forceful sinking of air will always leads toof temperature of the air.
Which of the following describes the difference between pure air and polluted air?