Chemistry · Thermochemistry

Calorimetry is a technique used to measure enthalpy changes associated with chemical reactions. Calorimetry involves measuring the heat changes that occur during a chemical reaction or a physical process.

Spectrometry, or spectroscopy, is a powerful technique used in various fields of science and industry to study the interaction between matter and electromagnetic radiation ,hence this option is incorrect.

Conductometry is a technique used in analytical chemistry to measure the electrical conductivity of a solution ,hence this option is incorrect.

Calorimetry is a technique used to measure enthalpy changes associated with chemical reactions. Calorimetry involves measuring the heat changes that occur during a chemical reaction or a physical process ,hence this is the correct option.

Refractometry is a technique used to measure the extent to which light is bent (refracted) when it passes through a substance ,hence this is not the correct option.