A fixed mass `m` of a gas is subjected to transformation of state: `K` to L to `M` and back to `K` as shown in the figure.
The succeeding operations that enabel this transformation of state are

Options

A. hating,cooling,heating,coolong
B. cooling,heating,cooling,heating
C. heating,cooling,cooling,heating
D. cooling,heating,heating,cooling

Answer

C

Explanation

`KtoL` (volume increases at constant pressure, hence the gas will be heated.)
`LtoM` (Pressure decreases at constant volume, it will take place by cooling).
`MtoN` (Volume decreases at constant pressure, it will take place by cooling the gas.)
`NtoK` (Pressure of gas increases at constant volume, it will take place by heating the gas).