Question

Absolute zero (0 K) is that temperature at which

• A. Matter ceases to exist
• B. Ice melts and water freezes
• C. Volume and pressure of a gas becomes zero
• D. None of these

Answer 1

Answer: (C)

Volume and pressure of a gas becomes zero

Answer 2

We know that $P = P_{0}(1 + \gamma t)$ and $V = V_{0}(1 + \gamma t)$

and $\gamma = (1/273)/{^\circ}C$for $t = - 273{^\circ}C$, we have $P = 0$ and $V = 0$

Hence, at absolute zero, the volume and pressure of the gas become zero.