The change in internal energy, when gas is cooled from 927° to 27° is

Explanation

The correct answer is Option D: 75%. The internal energy change of an ideal gas is directly proportional to the change in temperature. Using the formula ∆U/U x 100 = ∆T/T x 100, where ∆T is the change in temperature and T is the initial temperature, we calculate the percentage change as follows:Initial temperature (in Kelvin) = 1200 K (927°C), Final temperature (in Kelvin) = 300 K (27°C).∆T = 1200 - 300 = 900 K.Percentage change in internal energy = (∆T/T) x 100 = (900/1200) x 100 = 75%.Other options are incorrect as they do not match the calculated percentage change in internal energy based on the given temperature change.