Boiling

Q.

Explain briefly interconversion of states of matter on the basis of kinetic theory of gases with the help of a diagram.

Q.

Complete the following figure by mentioning the process.

Q.

Dry ice undergoes sublimation.

1. True
2. False

Q. Why do the farmers fill their fields with water to protect the crops from frost?

Q.

The change of a solid into a liquid is called ______.

Q.

In which of the following processes do the change in the states of matter involve the absorption of energy?
i. Boiling
ii. Sublimation
iii. Condensation
iv. Melting

1. i, ii and iv

2. i only

3. i and ii only

4. i, ii and iii only

Q.

1. Give two examples for each of the following:

(a) Substances which sublime.

Q.

Label the changes (a) to (d) below:

Q. The freezing point of the liquid decreases when pressure is increased, if the liquid

1. Does not change in volume while freezing
2. Expands while freezing
3. Contracts while freezing
4. None of these