During the process `AB` of an ideal gas

Options

A. work done on the gas Is zero
B. density of the gas is constant
C. slope of line `AB`from the `T`-axis is inversely proportional to the number of moles of the gas
D. slope of line `AB` form the `T`-axis is directy proportional to the number of moles of the gas.

Answer

A, B, D

Explanation

`P-T` graph is a straight line passing through origin.Therefore,
V = constant
`:.` Work done on the gas is zero.
Furhter density of the gas `rho=(m)/(V)prop(1)/(V)`
Volume of the gas is constant. Therefore, density of gas is also constant.
`PV=nRT , or P=((nR)/(V))T`
i,e., slope of `P-T` line `prop` n.