Question

Give reasons for the following:

a) The bottoms of cooking utensils are often kept black.

b) We prefer white or light coloured clothes in summers.

c) A new quilt is warmer than an old one.​

Answer 1

Answer:

ok come to explaining

Explanation:

a.

the bottoms to cooking of often kept back

Answer 2

1. Cooking Utensils are painted black from bottom to absorb more heat and get heated quickly. Cooking Utensils are highly polished from inside to reduce loss of heat and keep warm for a longer time.

2. We prefer white coloured clothes in summer because white colour is poor absorber of heat and so they keep us cool during summer. On the other hand, during winter we prefer black and dark coloured clothes because black colour is good absorber of heat and thus they keep us comfortably warm during winter.

3. A new quilt is warmer because the air which is trapped inside the cotton or woollen clothing acts as an insulator and does not allow the transfer of heat. However, when the quilt gets older, the air spacing of the cotton or wool gets compressed it no longer remains a good insulator.

I hope it helps you..

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Explanation:

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