Question

Which of the following statement(s) is/are true?
"Internal energy of an ideal gas ............"

• A. Decreases in an isobaric process
• B. Remains constant in an isothermal process
• C. Increases in an isobaric process
• D. Decreases in an isobaric expansion

Answer 1

The correct option is B Remains constant in an isothermal process

In isothermal process $\Delta U=0$
In isobaric expansion $V\propto T$ so $\Delta$U increases.