question_answer

The term 'adiabatic change of temperature' stands for

1. Heating or cooling of descending or ascending air respectively without any change in heat content.

2. Rise in temperature of the air after injecting heat in the air.

3. Fall in temperature of the air after heat is taken out of air.

Which of the above statements is/are correct?

A) 1 only

B) 1 and 2 only

C) 2 and 3 only

D) 1, 2 and 3