Question

Differential scanning calorimetry is used for the determination of?

• A. Surface topography
• B. Co-efficient of thermal expansion
• C. Phase transformations
• D. Grain boundary chemical analysis

Hint:

DSC is an essential tool for studying phase changes and thermal behavior of materials. It helps in understanding transitions such as melting, crystallization, and glass transitions.

Answer 1

The Correct Option is C

Differential Scanning Calorimetry (DSC) is a thermal analysis technique used to measure the heat flow into or out of a material as it undergoes phase changes or reactions as a function of temperature. This technique is most commonly used to study phase transformations in materials, such as melting, crystallization, glass transition, and other thermal events.
The principle behind DSC is that when a material undergoes a phase transition, it absorbs or releases heat. The DSC instrument measures these changes in heat flow and plots them against temperature. This helps in determining various thermal properties of materials, such as enthalpy changes during phase transformations.
Thus, DSC is commonly used to study phase transformations and not for surface topography, thermal expansion, or chemical analysis of grain boundaries.
Hence, the correct answer is: Phase transformations.