PDF chapter test TRY NOW
Answer the following questions:
1. Rana wants to buy shirts for summer. Should he buy cotton shirts or shirts made from synthetic material? Advise Rana, giving your reason.
He should buy cotton shirts. This is because cotton has more than synthetic clothes. In summers, we have extensive sweating, which is quickly by cotton shirts and hence, cotton clothes are much better than clothes made from material.
2. Give examples to show that plastics are noncorrosive in nature.
The literal meaning of non-corrosive is resistant to get destroyed by chemical action.
Following are the examples that show that plastics are non-corrosive in nature.
i. containers do not react with items stored in them.
ii. They do not get when exposed to moisture and air.
iii. They do not when left in the open for an extended period.
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