Question

20 J of heat is supplied to a system and a work of 30 J performed on it. If 50 J of heat is removed from the system, which type of system is it?

(a) Steady state

(b) Unsteady state

(c) Closed

(d) None of the mentioned

I got this question by my school teacher while I was bunking the class.

Query is from Energy balance for Different type of systems topic in division Miscellaneous of Chemical Process Calculation

Answer 1

Right answer is (a) Steady state

To elaborate: ∆E = 0.