Question

True or False

1.
Heat energy is invisible.

2.
For a substance to undergo a change of state, heat must be either given to it or taken away from it.

3.
The heat absorbed by a substance decreases with increase in temperature.

4.
The temperature of boiling water can be measured by a clinical thermometer.

5.
Heat lost by radiation depends upon whether the outer surface of the body is black or polished.

6.
No medium is required for transfer of heat by the process of convection.
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Answer 1

Answer:

1: true

2:true

4:false

6:true