Q.

When a wound spring is dissolved in an acid,  the temperature of the acid

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a

Increases

b

Decreases

c

Remains same

d

none

answer is A.

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Detailed Solution

The energy stored in winding the spring will be given by the spring to  the acid in the form of heat energy, hence the temperature of the acid will be increased.
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Get ₹ 1 crore* worth scholarship for JEE / NEET / Foundation
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Best Books for NEET
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