Question

Panelist’s had bought a new bottle of pickle from the market.She tried to open the metal cap to taste it but could not do so.She then took a bowl of hot water and immersed the upper end of bottle in it for five minutes.She could easily open the bottle now. Give reasons for the answer

Answer 1

Answer:

Effect of Expansion

Explanation:

Due to application of heat, the molecules of the lid gain kinetic energy making a little interparticle space between them. Due to this the metal lid expands and the lid opens easily as its circumference becomes greater than that of the upper portion of the jar.

Answer 2

Answer:

She can easily open the bottle because of expansion of metal cap (increase in size) due to heating. When a metal object is heated, it increases in size and when the hot metal object is cooled, it decreases in size and comes back to the original

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