NCERT Fibre to Fabric Objective Questions
CBSE Class 7 Science – NCERT Fibre to Fabric Objective Questions (MCQs)
Class: 7
Subject: Science
Section: Fibre to Fabric
Topic: NCERT Fibre to Fabric Objective Questions
These Multiple Choice Questions (MCQs) are designed strictly as per the NCERT syllabus, making them ideal for CBSE Class 7 Science examinations. Each question includes a detailed explanation to strengthen conceptual understanding.
Subject: Science
Section: Fibre to Fabric
Topic: NCERT Fibre to Fabric Objective Questions
These Multiple Choice Questions (MCQs) are designed strictly as per the NCERT syllabus, making them ideal for CBSE Class 7 Science examinations. Each question includes a detailed explanation to strengthen conceptual understanding.
1. Fibres obtained from plants and animals are called:
Answer: B. Natural fibres
Fibres derived from natural sources like cotton (plant) and wool (animal) are called natural fibres.
Fibres derived from natural sources like cotton (plant) and wool (animal) are called natural fibres.
2. Wool is obtained from:
Answer: A
Wool comes from the fleece (hair) of sheep and some other animals like goats and yaks.
Wool comes from the fleece (hair) of sheep and some other animals like goats and yaks.
3. The process of removing fleece is called:
Answer: B
Shearing is the cutting of sheep’s hair using machines.
Shearing is the cutting of sheep’s hair using machines.
4. Cleaning of fleece is known as:
Answer: B
Scouring removes grease, dirt, and dust from wool.
Scouring removes grease, dirt, and dust from wool.
5. Silk fibre is obtained from:
Answer: A
Silk comes from cocoons spun by silkworm larvae.
Silk comes from cocoons spun by silkworm larvae.
6. Rearing of silkworms is called:
Answer: A
Sericulture is the farming of silkworms for silk production.
Sericulture is the farming of silkworms for silk production.
7. Silkworms mainly feed on:
Answer: B
Mulberry leaves are rich in nutrients required for silk production.
Mulberry leaves are rich in nutrients required for silk production.
8. The larva of silk moth is called:
Answer: B
The larval stage spins silk to form the cocoon.
The larval stage spins silk to form the cocoon.
9. Silk is an example of:
Answer: B
Silk is produced by insects, so it is an animal fibre.
Silk is produced by insects, so it is an animal fibre.
10. Unwinding silk from cocoon is called:
Answer: B
Reeling extracts long silk threads.
Reeling extracts long silk threads.
11. Pashmina wool comes from:
Answer: B
Pashmina is obtained from Kashmiri goats.
Pashmina is obtained from Kashmiri goats.
12. Sorting of wool is based on:
Answer: C
Different qualities are used for different products.
Different qualities are used for different products.
13. The silk-producing stage is:
Answer: B
Larva secretes silk fibre.
Larva secretes silk fibre.
14. Wool fibre contains:
Answer: B
Wool is made of keratin protein.
Wool is made of keratin protein.
15. Which animal gives Angora wool?
Answer: A
Angora wool is obtained from Angora rabbits.
Angora wool is obtained from Angora rabbits.
16. Boiling cocoons helps in:
Answer: B
Boiling softens sericin for easy unwinding.
Boiling softens sericin for easy unwinding.
17. Yak wool is used in:
Answer: B
Yak wool is warm and suited for cold climates.
Yak wool is warm and suited for cold climates.
18. Tussar silk is obtained from:
Answer: B
Tussar is produced by wild silkworms.
Tussar is produced by wild silkworms.
19. The sticky silk substance is:
Answer: B
Sericin binds silk fibres in the cocoon.
Sericin binds silk fibres in the cocoon.
20. Adult silk moth emerges by breaking the:
Answer: B
The moth cuts the cocoon to come out.
The moth cuts the cocoon to come out.