Polyester

Q.

What is PET ? State the uses of PET.

Q. Who invented plastic

Q.

Fabric made from polyester fibres does not get wrinkled easily.

1. True

2. False

Q.

What is polyester ? Name a popular polyester.

Q. Terylene is a popular form of

1. nylon
2. plastic
3. rayon
4. polyester

Q. Terylene is a popular form of polyester.

1. True
2. False

Q.

The synthetic material which can be used for making fabrics as well as shatterproof bottles and jars is :

(a) nylon (b) rayon (c) polyester (d) acrylic

Q.

The synthetic fibre which contains the organic group similar to those which give fruits their 'sweet smell' is :

(a) nylon (b) acrylic (c) terylene (d) rayon

Q.

To which kind of synthetic fibres does terylene belong?

Q.

What is the difference between fibre and fabric?

Q.

What is the difference between polythene and plastic?

Q. Polyesters can be blended with cotton to form and with wool to form .

1. acrylic
2. rayon
3. polycot
4. polywool
5. ether

Q.

A polymer is a large molecule composed of many repeated units. What is a polyester composed of?

1. Ester

2. Amino acids

3. Ether

4. Cellulose

Q.

Name the form of polyester which is replacing materials like glass and used for making bottles and jars.

Q. Select a correct option that is representing man-made fibres.

1. Polyester, Rayon, Nylon
2. Nylon, Jute, Cellulose
3. Rayon, Cotton, Nylon
4. Silk, Cellulose, Nylon

Q. Identify the cloth materials that are preferred for sportswear.

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

Q.

What material or polymer is used to make our swimsuit and what are features that make it perfect for that fabric

Q.

The major components of polyester are

1. Dacron and Nylon

2. Ethylene glycol and Nylon

3. Nylon and Terephthalic acid

4. Ethylene glycol &Terephthalic acid

Q.

Why are sanitary diapers are made of rayon?

Q.

Terylene can be drawn into very fine fibres that can be woven like any other yarn. True/False

1. True

2. False

Q.

Which of the following is a polyester fabric?

1. Wool

2. Rayon

3. Dacron

4. Nylon

Q. Polyester is made up of small units called cellulose.

1. True
2. False

Q.

What do you mean by staple fibre?

Q. Which among the following statements is FALSE?

1. Nylon is the first fully synthetic fibre.
2. Rayon is the first formed synthetic fibre.
3. Polyester is a semi-synthetic fibre.
4. Dacron is a man-made fabric.

Q. Terylene is a type of:

1. Polyester
2. Acrylic
3. Natural fibre
4. Rayon

Q.

What are artificial fibres mostly used in and why?

Q.

Explain the uses of different types of fibres. [5 MARKS]

Q. Is there any fabric which allows air to pass through it (or its breathable)but not water?

Q.

The reason for decline of polyester industry during mid-1960s was

1. Its price was high.

2. It caused rashes on skin.

3. It was considered cheap fabric.

4. Nylon was more preferred.

Q.

From where Rayon is obtained ?

A synthetic fibre that looks like silk is obtained by chemical treatment of wood pup. This synthetic fibre is rayon. Rayon is a natural fibre created from the cellulose derived from pulp or cotton extracted from wood. Working with it is a low-cost and versatile material, and it lends itself to different uses

• Rayon is a particularly good fabric for sportswear and summer dresses, since it is so easy and casual to wear.
• Rayon is a versatile cotton fabric which shares many advantages. It is smooth, easy, absorbent and breathable, easily takes dyes and comes from sustainable raw materials.