1.

3. Pressure exerted by air is due to its:(a) mass(b) weight(c) space(d) none of these

Answer» <p>Atmospheric pressure is exerted by the weight of the air in the atmosphere. Atmospheric pressure is defined as the force per unit area exerted against a surface by the weight of the air molecules above that surface</p> <p> (b) weight is the answer</p>


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