Teaching UP TGT Mock Test Series 2025 Chemistry Thermodynamics First Law Of Thermodynamics And Hess law
What is the change in internal energy when a gas contracts from 325 ml to 125 ml at a constant pressure of 2 bar, while at the same time being cooled by removing 124 J heat?
1
-42 J
2
-84 J
3
+84 J
4
+42 J