NEET 2024 | Chemistry PYQ | Thermodynamics The work done during reversible isothermal expansion of one mole of hydrogen gas at 25°C from pressure of 20 atmosphere to 10 atmosphere is: (Given R = 2.0 cal K^−1 mol^−1) (1) 413.14 calories (2) 100 calories (3) 0 calorie (4) −413.14 calories