9. Rana wants to buy shirts for summer. Should he buy cotton shirts or
shirts made from synthetic material? Advise Rana, giving your reason.
10. Give examples to show that plastics are noncorrosive in nature.
11. Should the handle and bristles of a tooth brush be made of the same
material? Explain your answer.
12. "Avoid plastics as far as possible'. Comment on this advice.
Answers
Answer:
9. Rana should buy a cotton shirt because during summer we face the problem of sweating and cotton absorbs sweat.
10. Plastics are non-corrosive in nature, they do not react even if they come in contact with strong chemicals. For example, the cleaning chemicals that we use at home are stored in plastic bottles, instead of metal containers.
11. The handle and bristle of a toothbrush should not be made of the same material as the handle of the toothbrush should be hard and strong while the bristle should be soft and flexible.
12. yes this is absolutely true statement because plastic has now been the threat to this world becauseimproper use of plastic by human beings have caused it to the next level destruction.And the gases released during the burning of class plastic is extremely harmful for our health as well as plastic cannot be decomposed or it takes thousands of years to get decomposed.
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Explanation:
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