Boiling

Q.

Name the processes involved in the interconversion of states of matter.

Q.

What Is Meant By Supercooling?

Q. What is the reverse process of condensation ?

1. Freezing
2. Cooling
3. Sublimation
4. Boiling

Q.

Give reasons for the following:

Dry ice is used for refrigeration of food.

Q.

The process in which a liquid changes to its gaseous state at a constant temperature is called boiling.

1. True
2. False

Q.

Conversion of vapour [or gas] into a liquid is termed as_____________________[Liquification/vaporization]

Q. Solid camphor on heating converts to .

1. vapours
2. wax
3. liquid

Q.

What are the methods of cooling?

Q.

The fixed temperature at which a liquid state changes into gaseous state, due to the process of vaporisation, is called :

1. boiling point

2. vaporisation point

3. either (A) or (B)

4. none of the above

Q.

What is the physical state of water at:
(a) 250°C

Q. Recognize the process given in the image below.

1. Freezing
2. Melting
3. Boiling
4. Condensation

Q. ________ is supplied in the process of boiling.

1. Heat
2. Pressure
3. Water
4. Oxygen

Q.

What is the physical state of water at 100$°$ C?

Q.

Ice is the solid state of water and steam is its gaseous state.

1. True
2. False

Q. We see vapours coming out from the liquid, during the process of ______

1. Freezing
2. Boiling
3. Condensation
4. Cooling