The graph shown below is a graph between work done on the gas versus heat supplied to it. Different lines OA, OB, OC, OD represent different processes on monoatomic gas or a diatomic gas. Match the correct process with the line.

`{:("List I",,"List II"),("P. OA",,"1. Adiabatic Process"),("Q. OB",,"2. Isobaric process for monoatomic gas"),("R. OC",,"3. Isothermal process"),("S. OD",,"4.Isobaric process for diatomic gas"):}`

Options

A. P-4,Q-2,R-s,S-1
B. P-3,Q-4,R-1,S-2
C. P-4,Q-3,R-2,S-1
D. P-2,Q-1,R-4,S-3

Answer

A

Explanation

Adiabatic `rArr Q=0`
`S to 1`
Isothermal `rArr Q=W`
`Rto 3`
Isobaric mono `Q=5/2 nRT`
`W=nRT`
`W=2/5 Q`
`Q to 2`
Isobaric di. `Q=7/2 nRT `
`w=2/7Q`
=4