A student plotted the following four graphs representing the variation of velocity of sound in a gas with the pressure P. Whic one is correct?

Velocity of sound in a gas….. With increase of pressure

Which of the following graph represents the variation of amount of chemisorption of a gas by a solid with temperature under constant pressure?

Which of the following graph represents the variation of amount of chemisorption of a gas by a solid with temperature under constant pressure?

Plot the graph represent the variation of electric field |vecE| with distance (r )

At a constant pressure, of the following graphs that one which represents the variation of the density of an ideal gas with the absolute temperature T, is