Synthetic fibres

Q.

Paheli went to the market to buy sarees for her mother. She took out a thread from the edge of the two sarees shown by the shopkeeper and burnt them. One thread burnt with a smell of burning hair and the other burnt with the smell of burning paper. Which thread is from a pure cotton saree and which one from a pure silk saree? Give a reason for your answer.

Q.

Match the correct option

1. 1-b, 2-c, 3-a

2. 1-a, 2-b, 3-c.

3. 1-c, 2-b, 3-a.

4. 1-c, 2-a, 3-b.

Q.

21. Out of cotton, nylon, flax, and wool which is not a natural fibre?

Q. What is natural fibre and synthectic fibre give example

Q. Identify the fibre in the image.

1. Wool
2. Cotton
3. Silk
4. Nylon

Q.

compare the properties of natural and synthetic fibres .which one is better and why?

Q.

3. Why are natural fibres so important to us?

Q.

3. Classify these materials into natural and synthetic fibres.

acrylic, wool, jute, cotton, silk, polyester, nylon

Natural fibres __________________________

Synthetic fibres __________________________

Q. Synthetic fibres are costlier than natural fibres.

1. False
2. True

Q. Nylon is a synthetic fibre.

1. True
2. False

Q.

If you are given two sample pieces of cloth made of synthetic silk and natural silk which look the same; which among the following tests would you employ to find which silk is natural and which one is synthetic?

1. Put the cloth in water

2. Feel the texture of cloth

3. Burn and smell the fumes

4. It is impossible to find out

Q. burns with a pungent odour.

1. Cotton
2. Silk
3. Jute
4. Polyester

Q.

Polyester is a natural fibre.

1. True

2. False

Q.

Synthetic fibres are obtained from ________.

1. petroleum

2. animals

3. plants

4. limestone

Q.

Which of the following is artificial fibre?

1. Wool

2. Nylon

3. Silk

4. Cotton

Q. Which amongst the following synthetic fibres is a good absorbent of water?

1. Rayon
2. Polyester
3. Nylon
4. Acrylic

Q.

Which of the following is a natural fibre?

1. Nylon

2. Rayon

3. Jute

4. Polyester

Q.

Statement I:- Synthetic fibres have the advantage over the natural fibres that they are wrinkle-free.

Statement II:- Synthetic fibres are more costly than natural fibres.

Statement III:- Synthetic fibres dry faster as compared to natural fibres.

Which of the following statement(s) is/are true?

1. Statement I:- True

   Statement II:- False

   Statement III:- True

2. Statement I:- True

   Statement II:- True

   Statement III:- True

3. Statement I:- False

   Statement II:- True

   Statement III:- False

4. Statement I:- True

   Statement II:- True

   Statement III:- False