Assertion :A calorimeter can be used to measure the amount of heat lost or absorbed in a process
Reason: Calorimeters can be used to measure heat lost or gained by a system and its surroundings

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
A calorimeter is a device to carry out the process of calorimetry. Calorimetry is the process by which the heat changes of a physical or chemical reaction is measured alongwith its heat capacity.
Calorimeter is therefore used to measure heat lost or gained by a system and its surroundings.

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Assertion :A calorimeter can be used to measure the amount of heat lost or absorbed in a process Reason: Calorimeters can be used to measure heat lost or gained by a system and its surroundings

Assertion :A calorimeter can be used to measure the amount of heat lost or absorbed in a process
Reason: Calorimeters can be used to measure heat lost or gained by a system and its surroundings