Out of the following materials:

Cotton, Nylon, Terylene, Wool, PET, Acrylic

Which materials are polyesters?

Important Questions on Synthetic Fibres and Plastics

MEDIUM

8th CBSE

IMPORTANT

Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 3 - Synthetic Fibres and Plastics>Questions Based on High Order Thinking Skills (HOTS)>Q 79

Out of the following materials:

Cotton, Nylon, Terylene, Wool, PET, Acrylic

Which material is a polyamide?

MEDIUM

8th CBSE

IMPORTANT

Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 3 - Synthetic Fibres and Plastics>Questions Based on High Order Thinking Skills (HOTS)>Q 79

Out of the following materials:

Cotton, Nylon, Terylene, Wool, PET, Acrylic

Which material is used as a substitute for wool?

MEDIUM

8th CBSE

IMPORTANT

Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 3 - Synthetic Fibres and Plastics>Questions Based on High Order Thinking Skills (HOTS)>Q 79

Out of the following materials:

Cotton, Nylon, Terylene, Wool, PET, Acrylic

Which material is used as a substitute for glass?

HARD

8th CBSE

IMPORTANT

Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 3 - Synthetic Fibres and Plastics>Questions Based on High Order Thinking Skills (HOTS)>Q 80

The synthetic fibre A is chemically a polyamide whereas the synthetic fibre B contains a large number of ester groups. Another synthetic fibre C is made of a polymer D which consists of a number of glucose units joined one after the other.
(a) Which fibre could be (i) terylene (ii) rayon, and (iii) nylon?
(b) Name the polymer D.
(c) Which fibre (A, B, or C) is prepared from a natural raw material?
(d) Which fibre (A, B or C) contains the same type of groups as those in a PET jar?