# Which of the following curve represent ideal gas behaviour

Ideal gas equation
$\frac{PV}{T} = constant;$
$PV$ is not constant on $T$
When $P$ is constant $V \propto T$ so $V, T$ graph is a st.line as $V$ increases $T$ increases.
When $T$ is constant $P \propto \frac{1}{V}$ is not a st. line
$\therefore (A)$ is correct answer.
answered May 12, 2014
edited Feb 28