Sir, An ideal gas of mass m in a state A goes to another state B via 3 different processes as shown in the figure. If Q1, Q2 and Q3 denote the heat absorbed by the gas along the 3 paths, can we say that Q1<Q2<Q3? I solved it in the following way: From the figure it is clear that T1<T2<T3. Now, smaller the temperature smaller will be the heat absorbed by the gas. Therefore, Q1<Q2<Q3. Is my argument right?