Which of the following diagrams, Fig. depicts ideal gas behaviour ?

Options

A.
B.
C.
D.

Answer

A, C

Explanation

Sol. (a,c) For ideal gass behaviour, `PV=nRT` (a) When pressure, `P=` constnat From (i) volume v `alpha` Temperature T graph of V versus T will be straight line.
(b) When T-Constant from From (i) PV= Cosntant So. graph of P versus V will be a rectangular hyperbola. Hence this graph is wrong. The correct graph is shown below:

(c) When V=Constant From (i) P `alpha` T So, the graph is a stright line passing through the origin.
(d) From (i) `PV alpha TrArr(PV)/(T)=` Constant So. graph of Pv versus T will be a stright line parallel to the temperature axis (x-axis).
i.e. slope of this graph will be zero.
So, (d) is not correct.