Natural vs Synthetic Fibres MCQs
Natural vs Synthetic Fibres – MCQs
Class: 8 | Subject: Science
Section 3: Synthetic Fibres and Plastics
Topic: Natural vs Synthetic Fibres
CBSE Board Examination Preparation
Section 3: Synthetic Fibres and Plastics
Topic: Natural vs Synthetic Fibres
CBSE Board Examination Preparation
Instructions: These Multiple Choice Questions (MCQs) are designed strictly as per the NCERT syllabus, making them ideal for CBSE Class 8 Science examination standard.
1. Which of the following is a natural fibre?
Answer: C. Cotton
Cotton is obtained from cotton plants, making it a natural fibre. Natural fibres come from plants or animals.
2. Synthetic fibres are made by:
Answer: C. Chemical processes
Synthetic fibres are man-made using chemicals derived mainly from petrochemicals.
3. Rayon is known as:
Answer: B. Artificial silk
Rayon resembles silk in appearance but is chemically processed from wood pulp.
4. Which fibre is obtained from sheep?
Answer: A. Wool
Wool is a natural animal fibre obtained from sheep hair (fleece).
5. Nylon is an example of:
Answer: B. Synthetic fibre
Nylon is fully man-made and was the first commercially produced synthetic fibre.
6. Which natural fibre comes from silkworm?
Answer: B. Silk
Silk is obtained from the cocoon of silkworms, making it an animal fibre.
7. Synthetic fibres are:
Answer: B. Non-biodegradable
They do not decompose easily, causing environmental pollution.
8. Which fibre is most absorbent?
Answer: C. Cotton
Cotton absorbs sweat well, making it comfortable in summer.
9. Acrylic is used as a substitute for:
Answer: B. Wool
Acrylic is lightweight, warm, and cheaper than natural wool.
10. Polyester is made from:
Answer: B. Petroleum products
It is produced through chemical reactions of petroleum-based substances.
11. Jute is obtained from:
Answer: A. Stem of plant
Jute fibres are extracted from the stem of jute plants.
12. Which fibre dries quickly?
Answer: C. Polyester
Synthetic fibres absorb less water, so they dry faster.
13. Natural fibres are obtained from:
Answer: B
Examples: Cotton (plant), Wool (animal).
14. Which is strongest fibre?
Answer: C. Nylon
Nylon has high tensile strength.
15. Silk fibre is protein-based.
Answer: A. True
Silk is an animal protein fibre.
16. Which fibre wrinkles easily?
Answer: C. Cotton
Natural fibres crease more than synthetics.
17. Synthetic fibres melt on heating.
Answer: A
They soften and melt, which can be hazardous.
18. Linen is obtained from:
Answer: A
Linen is a natural fibre from flax stems.
19. Which fibre is eco-friendly?
Answer: C
Cotton is biodegradable.
20. Blended fabrics combine:
Answer: B
Example: Terrycot (cotton + polyester).
