Question

In a closed insulated container, a liquid is stirred with a
paddle to increase the temperature, which of the following
is true?
(a) ∆E =W ≠ 0,q = 0 (b) ∆E =W = q ≠ 0
(c) ∆E = 0,W = q ≠ 0 (d) W = 0,∆E = q ≠ 0

Answer 1

answer : option (a) ∆E = W ≠ 0 , q = 0

read the question carefully because answer is hidden in it.

In a closed insulated container, a liquid is stirred with a paddle to increase the temperature,

closed insulated container is given. it means heat is neither released nor absorbed by container. so, process is adiabatic so, q = 0.

and we know, in adiabatic process, internal energy , ∆E ≠ 0 and workdone , W ≠ 0

hence, option (a) is correct choice.

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Answer 2

Answer:

option a

Explanation:

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