Priya found that woollen blankets were expensive as they were mae of natural fibres. She wanted a blanket which was similar to woollen blanket, but is cheaper. She can buy a blanket made of ____________ fibre.
Question 2
2.
Terylene is popular form of
Question 3
3.
Which of the following represents the correct match for items in Column A with those in Column B?
Question 4
4.
Question 5
5.
Name the plastic which is coated on uniforms of firemen to make them fire resistant.
Question 6
6.
Question 7
7.
Question 8
8.
Which of the following plastic objects can be recycled?
A. Electric Socket B. Polythene Bag C.PVC Pipe D. Ashtray
Question 9
9.
Which of the following has cross linked polymer chains?
Question 10
10.
The clothes of a person working in the kitchen catch fire accidently causing severe burns. The person is most likely wearing clothes made of:
Question 11
11.
Question 12
12.
Write 3 positive characteristics of plastics.
Question 13
13.
Write 2 disadvantages of synthetic fibres.
Question 14
14.
Which of the following is biodegradable?
Question 15
15.
The fabric terywool is obtained by mixing terylene and wool.
Question 16
16.
Synthetic fibre is a chemical substance of single unit.