Expected questions from class 7 Science Chapter 3 Fibre to Fabric are given below.

Class 7 Science Chapter 3 | Fibre to Fabric

One mark questions

1. Name some fibres obtained from animals

Wool and silk

2. Wool is obtained from the …………………… of sheep or yak.

fleece

3. From the given options choose the animal from which fleece cannot be obtained – sheep, goat, yak, cow

Cow

4. The process of selecting parents for obtaining special characters in their offspring is called ……………………………

selective breeding

5. Pashmina shawls are a famous product of ………………………..

Kashmir

6. The wool used for making pashmina shawls are obtained from ……………………….

Kashmiri goats

7. Name the animals from which wool can be obtained

Sheep, yak, goat, angora goats, camels, Llama and Alpaca

8. Angora goats are found in the hilly regions of ………………………….

Jammu and Kashmir

9. What is shearing?

Shearing is the process in which the fleece is removed from sheep along with a thin layer of skin.

10. What is scouring?

Scouring is the process by which the sheared skin with hair is thoroughly washed to remove grease, dust and dirt.

11. What are burrs?

They are the small fluffy fibers

12. Name the bacterium which causes sorter’s disease?

Anthrax

13. Risks faced by people working in any industry are called …………………………….

occupational hazards

14. The rearing of silk worms for obtaining silk is called ………………………….

sericulture

15. The larvae of the silk moth is called ………………………….

caterpillars

16. The fibre obtained from silkworm is made of a …………………….

protein

17. What is pupa?

When caterpillar is ready to enter the next stage of its life, it begins to weave a net to hold itself. Then it starts secreting fibre made of a kind of protein. This fibre becomes hard when it is exposed to air and is called the silk fibre. The pupa is the caterpillar completely covered in silk fibres.

18. What is the outer covering of pupa called?

Cocoon

19. Which country leads the world in silk production?

China

20. Name the plant on whose leaves silk worms lay eggs?

Mulberry

21. The most common silkworm

Mulberry silkworm

22. What is reeling?

The process of taking out threads from the cocoon for use as silk is called reeling.

Class 7 Science Solutions

• Class 7 Science Chapter 1 | Nutrition in plants | Important questions
• Class 7 Science Chapter 2 | Nutrition in animals | Expected Questions
• Class 7 Science Chapter 3 | Fibre to Fabric | Expected Questions
• Class 7 Science Chapter 4 | Heat | Expected Questions
• Class 7 Science Chapter 5 | Acids, Bases and Salts | One mark questions
• Class 7 Science Chapter 6 | Physical and Chemical Changes | Textbook solutions
• Class 7 Science Chapter 6 | Physical and Chemical Changes | Important Questions for Exam
• Class 7 Science Chapter 7 | Weather, Climate and Adaptations of Animals To climate | Textbook Solutions
• Class 7 Science Chapter 7 | Weather, Climate and Adaptations of Animals To Climate | Extra Questions
• Class 7 Science Chapter 8 | Wind, Storm and Cyclones Extra Questions
• Class 7 Science Chapter 9 | Soil | Extra questions
• Class 7 Science Chapter 10 | Respiration in Organisms | Textbook Solutions
• Class 7 Science Chapter 10 | Respiration in Organisms | Extra questions
• Class 7 Science Chapter 11 | Transportation In Animals And Plants | Important Questions
• Class 7 Science Chapter 12 | Reproduction in Plants | Important Questions
• Class 7 Science Chapter 13 | Motion and Time | Extra Questions
• Class 7 Science Chapter 14 | Electric Current And Its Effects | Important Questions