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NCERT Class VIII Science Solution: Chapter 3 - Synthetics Fibres and Plastics Part 2
Question 8:
Which of the following represents the correct match for items in Column A with those in Column B. ?
Column A | Column B |
---|---|
|
|
|
|
|
|
- I- (ii) , II- (iii) , III- (i)
- I- (iii) , II- (i) , III- (ii)
- I- (ii) , II- (i) , III- (iii)
- I- (iii) , II- (ii) , III- (i)
Answer: B
Question 9:
Which of the following groups contain all synthetic substances?
- Nylon, Terylene, Wool
- Cotton, Polycot, Rayon
- PVC, Polythene, Bakelite
- Acrylic, Silk, Wool
Answer: C
Question 10:
The material which is commonly used for making kitchen containers is
- PVC
- Acrylic
- Teflon
- PET
Answer: D
VERY SHORT ANSWER QUESTIONS
Question 11:
Cotton is a natural polymer. What is its chemical name?
Answer:
Cellulose.
Question 12:
A synthetic fiber which looks like silk is obtained by chemical treatment of wood pulp. It is, therefore, known as artificial silk. What is its common name?
Answer:
Rayon.
Question 13:
Terrycot is made by mixing two types of fibres. Write the names of the fibres.
Answer:
Terylene and cotton
Question 14:
Plastic articles are available in all possible shapes and sizes. Can you tell why?
Answer:
Plastic is easily moldable so the articles can be made in any shape and size.