Question

write true or false. Correct the false statements.
1) Polymers do not occur in natural materials.
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2) Acrilic fabric absorbs more water than woollen fabric.
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3) Natural fabric do not catch fire.
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4) Plastics are used in the manufacturing of spacecraft.
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5) Plastics react with air but not with water.
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Answer 1

Answer:

1 false

2 false

3 false

4 true

5 false

Answer 2

Answer:

(i) True

(ii) False, synthetic fibres melt on heating.

(iii) True

(iv) False, most of the plastics are non-biodegradable.