Melting Interview Questions

Melting interview questions

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Total Questions: 5

1. The purity of the compound is confirmed by

A. Its melting point and boiling point

B. Chromatographic technique

C. Spectroscopy

D. All of the mentioned

Correct Answer is : All of the mentioned

2. Select the correct statement from the following options.

A. The transformation of solid to liquid is called melting and the reverse process is called freezing

B. The transformation of solid to liquid is called freezing and the reverse process is called melting

C. The transformation of liquid to solid is called melting and the reverse process is called freezing

D. None of the mentioned

Correct Answer is : The transformation of solid to liquid is called melting and the reverse process is called freezing

3. The temperature at which solid and liquid coexist in equilibrium is called

A. Melting point of liquid

B. Freezing point of liquid

C. Freezing point of solid

D. All of the mentioned

Correct Answer is : Freezing point of liquid

4. Select the incorrect statement from the following option.

A. Every pure solid crystalline substance has a characteristic and unique melting point

B. Impure sample of substance has different melting point

C. Two different pure substances have same melting points

D. Melting point serves as the criteria of purity of a solid substance

Correct Answer is : Two different pure substances have same melting points

5. When the solid and liquid phase are in equilibrium, the temperature

A. Increases gradually

B. Decreases gradually

C. Remains constant

D. None of the mentioned

Correct Answer is : Remains constant

Melting interview questions