What are raw silk and spun silk?

Important Questions on Fibre to Fabric

HARD

7th CBSE

IMPORTANT

LEARNING SCIENCE>Chapter 3 - Fibre to Fabric>Exercise>Q 4

With the help of a flow chart, describe the life cycle of a silkworm.

HARD

7th CBSE

IMPORTANT

LEARNING SCIENCE>Chapter 3 - Fibre to Fabric>Exercise>Q 5

What is sericin? How is it softened?

MEDIUM

7th CBSE

IMPORTANT

LEARNING SCIENCE>Chapter 3 - Fibre to Fabric>Exercise>Q 1

What is meant by Shearing of sheep.
 

MEDIUM

7th CBSE

IMPORTANT

LEARNING SCIENCE>Chapter 3 - Fibre to Fabric>Exercise>Q 1

What is meant by sorting of wool.
 

MEDIUM

7th CBSE

IMPORTANT

LEARNING SCIENCE>Chapter 3 - Fibre to Fabric>Exercise>Q 1

What is meant by combing of wool.

HARD

7th CBSE

IMPORTANT

LEARNING SCIENCE>Chapter 3 - Fibre to Fabric>Exercise>Q 2

Write the various steps involved in the production of silk cloth from silk moth.

HARD

7th CBSE

IMPORTANT

LEARNING SCIENCE>Chapter 3 - Fibre to Fabric>Exercise>Q 3

Describe the process of wool production.

MEDIUM

7th CBSE

IMPORTANT

LEARNING SCIENCE>Chapter 3 - Fibre to Fabric>Exercise>Q 4

Removal of sheep wool is called shearing. Shearing is done in early summers and not in winters.
Why is shearing done in summers?