Question

Which of the following statement(s) is/are correct regarding reversible adiabatic and isothermal process for an ideal gas, starting from the same initial state to the same final volume?

• A. In expansion, more work is done by the gas in isothermal process.
• B. In compression, more work is done on the gas in adiabatice process.
• C. In expansion, the final temperature of gas will be higher in isothermal process.
• D. In compression, the final temperature of gas will be higher in adiabatiic process.

Answer 1

Answer: (A), (B), (C), (D)

In compression, the final temperature of gas will be higher in adiabatiic process.

A) In isothermal process, heat is given from surroundings, whereas in adiabatic process, internal energy is consumed for expansion. Hence temperature also decreases in adiabatic process.
B) For the compression internal energy in adiabatic process increases and hence more work is done.
C) The final temperature in isothermal is zero and for an adiabatic process it is negative.
D) In adiabatic process the final temperature is positive and for an isothermal process it is zero.