Question

A temperature $T$ is measured by a constant volume gas thermometer. Choose the correct statements.
$\left(i\right)T$ is independent of the gas used at all pressures
$\left(ii\right)T$ is independent of the gas used only at low pressure
$\left(iii\right)$ The ideal gas scale agrees with the absolute scale of temperature
$\left(iv\right)$ The ideal gas scale does not agree with the absolute scale of temperature

• A. $\left(iii\right),\left(iv\right)$
• B. $\left(ii\right),\left(iii\right)$
• C. $\left(i\right),\left(iii\right)$
• D. $\left(i\right),\left(iv\right)$

Answer 1

The correct option is B $\left(ii\right),\left(iii\right)$

By Gas law at constant volume, we can say $T\propto P$ Gas behaves ideally at low pressure and high temperature only at low pressures (not all pressures), the temperature can be independent of the gas used.

So, statement $\left(ii\right)$is correct
Yes, the ideal gas scale agrees with the absolute scale of temperature. So, statement $\left(iii\right)$ is correct
Final answer (b)