During an isothermal expansion, a confined ideal gas does – 150 J work against its surrounding. This implies that

Q: During an isothermal expansion, a confined ideal gas does – 150 J work against its surrounding. This implies that

(a) 150 J of heat has been added to the gas

(b) 150 J of heat has been removed from the gas

(d) No heat is transferred because the process is isothermal

Ans: (b) 150 J of heat has been removed from the gas