Question

The $PV$ diagram shows four different possible reversible processes performed on a monatomic ideal gas. Process $A$ is isobaris (constant pressure). Pressure $B$ is isothermal (constant temperature). Process $C$ is adiabatic . Process $D$ is isochoric (constant volume). For which process(es) does the temperature of the gas decreases

• A. Process $A$ only
• B. Process $C$ only
• C. Only process $C$ and $D$
• D. Only process $B$, $C$ and $D$

Answer 1

The correct option is C Only process $C$ and $D$

In $A$ temperature will increase

in $B$ temperature remains constant

in $C$ & $D$ temperature decrease.

Hence, option $C$ is the correct answer.