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Q.

A liquid is stirred in thermally insulated container for about 2 hrs which of the following is
correct

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a

$w < 0, q = 0, ΔU = 0$

b

$w < 0, q < 0, ΔU = 0$

c

$w > 0, q = 0, ΔU > 0$

d

$w > 0, q = 0, ΔU = 0$

answer is A.

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Detailed Solution

Because in insulated system there is no exchange of heat and energy, but work is done because of the pressure given by stirrer.

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