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Q.

In a closed insulated container a liquid is stirred with a paddle to increase the temperature. Correct  conditions  are

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a

W = 0, ΔE =q ≠ 0

b

ΔE =W =q ≠ 0

c

ΔE =0, w =q ≠ 0

d

ΔE = w  ≠ 0, q =0

answer is D.

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Detailed Solution

∴insulated vessel, q = 0 increase in  temperature indicates  ΔE ≠0Paddle  work  is  done  ∴ w ≠ 0
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