Question

On a cold day, it is hard to open the metallic lid of a tight container. But when you gently heat the neck you can easily open the lid. Why? *

On heating glass expands and lid contracts
Lid expands more than the neck and thus slides easily
The neck of the bottle becomes slippery on heating
Lids of the bottles cannot bear the heat

Answer 1

Answer:

due to exapnsion

Explanation:

On heating glass expands and lid contracts

Lid expands more than the neck and thus slides easily

The neck of the bottle becomes slippery on heating

Lids of the bottles cannot bear the heat

Answer 2

Answer:

Due to the Thermal expansion of metals, metallic lid expands and hence becomes loose to open it easily.