Give reasons for the following:
Tyres of automobiles are inflated to lesser pressure in summer than in winter.

Options

A. because the pressure of gas decreases on increase in temperatures.
B. because the pressure of a gas increases on decrease in temmperatures.
C. in order to avoid puncture.
D. because the pressure of gas increases on increase in temperature.

Answer

D

Explanation

The pressure of a given mass of a gas is directly proportional to its absolute temperature. Therefore in summers the atmospheric temperature is much higher as compared to winter. Consequently, the same volume of air will exert greater pressure in summer than in winter.
Therefore, it is advisable in order to avoid burst.