Question

1.which is anatural fibre among the ( )
Following.
(a)rayon (b)nylon (c)polyster (d)silk
2.the symbol of code;4 plastic represents ( )
(a) pet (b) hdpe (c)ldpe (d)other
3.which is the strong fibre ( )
(a)nylon (b) rayon c) polyster d) cotton
4. the handles of utensity are made up of-- ( )
Type of thermosetting plastics.
a)melamine b)bakelite c)a& b d)rubber
5.who invented the thermo plastics ( )
a)bake land b)hermann standinger c) alexander parkes d)robert boyle
ii. fill in the blanks

6. the creator of the first plastics is-----------------
7. ---------is a popular polyster.
8.---------plastics are not remouldable
9. the process of preparation of a new fibre by the combination of one synthetic and other two(or) more natural (or) synthetic fibres is called---------
10. the first rayon factory in india was established in kerala in-----------
iii. match the following

11.hexa methylene diamine ( ) (a) polyster
And adipic acid
12.sodium hydroxide and ( ) (b)nylon
Carbon disulphide
13.di-methyl ether, dihydric ( ) (c)rayon
Alcohol and tereph tharic acid
14.fake bur ( ) (d) bake lite
15.handles of utensity ( ) ( e) acrylic ​

Answer 1

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Answer 2

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