An ideal gas undergoes four different processes from the same initial state, represented on a standard P-V diagram. The processes are isobaric, isothermal, adiabatic, and isochoric. In descending order of their slopes on the P-V plot starting from the vertical axis, which process represents the adiabatic expansion?

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?