Question

A. Tick the most appropriate answer.
1. Which of the following substances is inflammable?
a. asbestos
b. brick
c. water
d. LPG
2. The si unit of temperature is
a. degree Celsius.
b. degree Fahrenheit.
c. calorie.
d. kelvin.
3. The temperature at which a substance in its vapour state changes into its liquid state is called
a. sublimation point.
b. vaporization point.
c. freezing point.
d. condensation point.
4. An example of a substance that sublimes is
a. fluorine.
b. bromine.
c. chlorine.
d. iodine.
d. vaporization.
5. Heat transfer in solids takes place through
a. convection.
b. radiation.
C. conduction.
d. vaporization.
6. The mode of transfer of heat that requires no material medium is
a. convection.
b. radiation.
C. conduction.
d. sublimation.
7. A thermos flask minimizes the flow of heat due to
a. convection.
b. radiation.
c. conduction
d. all of these​

Answer 1

Tick the most appropriate answer.

1. Which of the following substances is

inflammable?

a. asbestos

b. brick

C. water

d. LPG

2. The si unit of temperature is

a. degree Celsius.

b. degree Fahrenheit.

C. calorie.

d. kelvin.

3. The temperature at which a substance

in its vapour state changes into its liquid

state is called

a. sublimation point.

b. vaporization point.

c. freezing point.

d. condensation point