Wednesday, 30 June 2021

Assignment on Fibre to Fabric Chapter-2, Class-7, NCERT

 Answer the following questions:

1. Define the following terms: (2)

I. Shearing

II. Reading

III. Sericulture

IV. Cocoon

2. Why wool yielding animals have thick coat of hair? (2)

3. Name the two types of fibres obtained from the fleece of a sheep.

(2)

4. Does shearing hurt sheep? If not why? When is shearing done? (2)

5. What is sorter’s disease? (1)

6. What is sorting? (1)

7. Name an Artificial silk fibre. By which materials they are made of?

(2)

8. How we can distinguish between natural and artificial silk fibre?

Explain briefly. (2)

9. Describe the life cycle of a silk moth with suitable diagram. (5)

10. What is reeling? (1)

No comments:

Post a Comment

NCERT, CLASS-7, ACIDS, BASES & SALTS INSIDE Q&A

 1. What are acids? Give some examples. Answer: A substance which reacts with a base to form a salt (and water) is called an acid. Acids ha...