Question

1.
Heat cannot be produced by doing work
No gaps are left between the rails of railway tracks.
3.
Poor conductors of heat are also good insulators of heat.
Ventilators, when provided in rooms, are located near their roofs.
5.
A material medium is required for transfer of heat by the process
of radiation​

Answer 1

Answer:

1》false

2》false

3》true

4》true

Explanation:

answer of this question plz make brainly and follow me.