Question

Temperature of a system is increased with no change in internal energy, if the work done by the system is 10 Joule, what amount of heat is taken out from the system?

(a) 10 J

(b) – 10 J

(c) 0

(d) 5 J

This question was addressed to me by my school teacher while I was bunking the class.

My question is taken from Energy Types in chapter Liquids and Gases in Equilibrium with Solids and Energy: Terminology, Concepts, and Units of Basic Chemical Engineering

Answer 1

The correct answer is (b) – 10 J

The best explanation: W = – 10, => 0 = Q + W, => Q = 10 J, => amount of heat taken out = – 10 J.