A closed system undergoes a cyclic process 1-2-3-4-1. The work done by the system during the expansion process 1-2 is 500 kJ, while the work done on the system during the compression process 3-4 is 100 kJ. If no work is done during the other processes, what is the net heat transfer during one complete cycle?

Which Indian independence movement leader was primarily known for his philosophy and practice of non-violent civil disobedience?

Who gave the call for 'Do or Die' during the Quit India Movement in 1942?

Which of the following revolutionary pairs were imprisoned together in Cellular Jail and faced harsh conditions, contributing significantly to the Indian independence movement?