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Question-1
Which of the following are thermoplastics ?
I. Poly-vinyl chloride
II. Poly- styrene
III. Polythene
IV. Bakelite

(A) I and II only	(B) II and III only
(C) I, II and III only	(D) I, II and IV only

Question-2
During long distance travel you would like to take drinking water in a bottle made up of:

(A) glass	(B) plastic
(C) leather	(D) steel

Question-3
Select the material that is used to make ropes for use in rock climbing.

(A) Nylon-6	(B) Nylon-66
(C) Rayon	(D) Acrylic

Question-4
Since plastics are not generally attacked by chemicals, so they are ideal substitutes for

(A) wood	(B) Metals
(C) Glass	(D) All of these

Question-5
Silk is obtained from ____________ of the silk moth.

(A) Pupa	(B) Larva
(C) Cocoon	(D) Caterpillar

Question-6
Wool is obtained from _______ of sheep.

(A) Skin	(B) Toes
(C) Fleece	(D) All of the above

Question-7
In present times, plastics are used by majority of people because
I. Plastics are quite cheap.
II. Plastics can be handled with ease.
III.Plastics are unbreakable.
IV.Plastics are light-weight.

(A) I and II only	(B) II and III only
(C) I, II, and III only	(D) I, II and IV only

Question-8
Raw materials for most of the fabrics are obtained from

(A) Earth	(B) Sky
(C) Petroleum	(D) None of these

Question-9
Commonly used synthetic fabrics are
I. Rayon
II. Nylon
III. Polyester
IV. Acrylic

(A) I and II only	(B) II and III only
(C) I, II and III only	(D) All of these

Question-10
The sorter's disease is caused by a bacteria:

(A) Anthrax	(B) Bacillus
(C) Virus	(D) Aedes

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Std 8

CBSE

Practice in Related Chapters
Combustion,flame and fuel
Coal and Petroleum
Synthetic Fibres and Plastics
Pollution of Air and Water
Metals and Non-Metals

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