Discussion Forum



1)

In a closed insulated container a liquid is stirred with a paddle to increase its temperature. In this process which of the following is true?


A) $\triangle E = W = Q = 0$

B) $\triangle E \neq 0, Q = W = 0$

C) $\triangle E = W \neq 0, Q= 0$

D) $\triangle E = Q \neq 0, W = 0$

Answer:

Option C

Explanation:

As the system is closed and insulated, no heat enters. or leaves the system, i.e. 

Q = 0:

ΔE = Q+W = W