Question

the apparatus used to measure heatis called a​

Answer 1

Answer:

calorimeter

The apparatus used to measure heat is called a calorimeter.

Answer 2

Answer:

The apparatus used to measure heat is called a THERMOMETER

Explanation:

A thermometer is a device that measures temperature or a temperature gradient.

A thermometer has two important elements:

a temperature sensor in which some change occurs with a change in temperature;

and some means of converting this change into a numerical value.

Very common thermometer used by a doctor or at home to measure Fever / Temperature of human body

This uses Mercury.

Now Even Digital thermometers are also available.