Explore topic-wise MCQs in Physics.

This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.

1.

Select the correct statement for melting of any substance.

A. It occurs at the same temperature as that of vapourization
B. It is exothermic in nature
C. It occurs at 100 C
D. It requires heat to be supplied to the substance
Answer» E.
Discussion
2.

Condensation temperature is the same as evaporation temperature. True or False?

A. True
B. False
Answer» B. False
Discussion
3.

If 5g of a solid requires 30cal of heat to change into liquid at the same temperature, calculate the latent heat of fusion in cal/g.

A. 150
B. 0.167
C. 6
D. 3
Answer» D. 3
Discussion
4.

Getting burnt by steam is less dangerous than boiling water. True or False?

A. True
B. False
Answer» C.
Discussion
5.

What happens to the boiling point of water in a container when the container is completely closed by a lid?

A. Increases
B. Decreases
C. Remains same
D. Boiling point is characteristic of a substance
Answer» B. Decreases
Discussion
6.

What is regelation?

A. Refreezing of ice on addition of impurities
B. Refreezing of ice on reduction in pressure
C. Melting of ice at lower temperature than its melting point due to increase in pressure
D. Melting of ice at higher temperature than its melting point
Answer» C. Melting of ice at lower temperature than its melting point due to increase in pressure
Discussion
7.

Melting point depends on pressure. True or False?

A. True
B. False
Answer» B. False
Discussion
8.

Change of phase occurs at a constant temperature, which implies that even on addition of heat to a substance temperature remains constant. True or False?

A. True
B. False
Answer» B. False
Discussion