In a cyclic process, the internal energy of the gas

In a cylic process,the internal energy of gas:

For a cyclic process, the change in internal energy of the system is ____

Assertion : In an adiabatic process, change in internal energy of a gas is equal to work done on/by the gas in the process. Reason : This is because temp.of gas remains constant in an adiabatic process.

Gas is taken through a cyclic process completely once. Change in the internal energy of the gas is

Gas is taken through a cyclic process completely once. Change in the internal energy of the gas is

An ideal gas is taken round a cyclic thermodynamic process ABCA as shown if Fig. If the internal energy of the gas at point A is assumed zero while at B it is 50 J. The heat absorbed by the gas in the process BC is 90 J. (a) What is the internal energy og the gas at point C ? (b) How much heat energy is absorbed by the gas in the process AB? (c ) Find the heat energy rejected or absorbed by the gas in the process CA. (d) What is the net work done by the gas in the complete cycle ABCA ?