JEE Mains 02-Sep-2020 Shift 1 Solved Paper

An engine takes in 5 moles of air at 20°C and 1 atm, and compresses it adiabaticaly to 1∕10th of the original volume. Assuming air to be a diatomic ideal gas made up of rigid molecules, the change in its internal energy during this process comes out to be X kJ. The value of X to the nearest integer is ______.