Question

1.
5. Give reasons for each of the following.
(a) Electrical wires have plastic coating.
(b) Cooking pans have handles made of plastics.
(c) Clothes made of synthetic fibres are not very comfortable to wear.
(d) Plastic articles are more popular than the ones made of metals.​

Answer 1

Answer:

1, The electrical wires are covered with plastic coverings because the plastic is an insulator and thus it protects us from getting shock

2, Cooking pots are provided with wooden or plastic handles because they are bad conductors of heat. This prevents the heat from the pan to transfer to our hand. Thus, we can hold the utensils comfortably by our hands.

3, Synthetic fibres are generally hydrophobic, i.e., they repel moisture (e.g., sweat) and do not absorb it. ... So clothes made of synthetic fibres are not comfortable to wear as they do not allow sweat to evaporate easily.

4 , plastic articles more popular than the ones made of metals because the articles of the plastic are Thin, Less cost and they are easier to use.

Explanation:

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Answer 2

Answer:

Hey mate here is the answer

Explanation:

a) because the. electric wire are good conductors of electricity. so to avoid electric shock we have plastic coated wires

b) because metals are good conductors of heat

and pans are made of metals

c)because they don't evaporate heat out into the atmosphere

d) because they are light weight easily mouldable and of low cost

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