Polymer

Q.

Which one of the following polymers is prepared by condensation polymerization?

1. Teflon

2. Nylon-6, 6

3. Rubber

4. Styrene

Q.

Which of the following is an example of non-biodegradable waste?

1. Fruits

2. Polyethene

3. Paper

4. vegetable waste

Q.

Distinguish between biodegradable and non-biodegradable substances.

Q.

What is a polymer? Name the natural polymer of which cotton is made.

Q. The raw materials used in making nylon are:

1. Cellulose and water
2. Limestone and air
3. Wood pulp and coal
4. Coal, water and air

Q.

Although rayon is obtained from a natural source, wood pulp, yet it is a man-made fibre. Why? [2 MARKS]

Q.

Which is the first synthetic fibre?

Q.

Name the units of which cellulose polymer is made.

Q.

Cotton is a natural polymer. What is its chemical name?

Q.

The similarity between artificial silk and cotton is that :

(a) both are non-biodegradable (b) both melt on heating

(c) both are amide polymers (d) both are cellulose polymers

Q.

Statement I:- All natural and synthetic fibres are not polymers.

Statement II:- Plastics and rubber also belong to the category of polymers.

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

1. Statement I:- True

   Statement II:- False

2. Statement I:- False

   Statement II:- False

3. Statement I:- False

   Statement II:- True

4. Statement I:- True

   Statement II:- True

Q.

Match the entries of column I with column II
$$\begin{array}{cc}\text{Column A}& \text{Column B}\\ \text{(a) First artificial plastic}& \text{(i) Polythene}\\ \text{(b) First artificial fibre}& \text{(ii) DNA}\\ \text{(c) Biopolymer}& \text{(iii) Nylon}\\ \text{(d) Linear polymer}& \text{(iv) Bakelite}\end{array}$$

1. (a) - (iv), (b) -(ii), (c) - (iii), (d) - (i)

2. (a) - (iv), (b) -(iii), (c) - (ii), (d) - (i)

3. (a) - (iii), (b) -(iv), (c) - (i), (d) - (ii)

4. (a) - (i), (b) -(ii), (c) - (iii), (d) - (iv)

Q.

All plastics are linear polymers.

1. True

2. False

Q.

Does natural fibres made up of polymers?

Q.

Why is rayon preferred over silk ?

Q.

Match the entries of column I with column II:

Polymer	Monomer
a. Natural rubber	i. Monomer
b. Polythene	ii. Vinyl chloride
c. Polyvinyl chloride	iii. Isoprene

1. (a) - (iii), (b) - (i), (c) - (ii)

2. (a) - (i), (b) - (ii), (c) - (iii)

3. (a) - (ii), (b) - (i), (c) - (iii)

4. (a) - (iii), (b) - (ii), (c) - (i)

Q. Which of the following plastics will have an arrangement of monomers as shown below?

1. PET
2. Melamine
3. Teflon
4. PVC

Q.

The word "polymer" means -

1. Chain of Steel

2. Many + units

3. Single + Unit

4. Chain of units

Q. Explain why some fibres are called synthetic.​

Q. A lady went to the market to buy a blanket. The shopkeeper showed her blankets made up of acrylic fibres as well as made up of wool. She preferred to buy an acrylic blanket. Can you guess why?

Q.

Are all Polymers Plastic?

Q.

The process by which large molecules of artificial fibres are made from small simple molecules is called __.

Q.

What is the structure of polymer?

Q. Which amongst the following is used to make the pipes used to supply water?

1. Bakelite
2. Polystyrene
3. Polyvinyl chloride
4. Melamine

Q. The reason behind rayon being considered as a synthetic fibre even though it is prepared from wood pulp is:

1. silk is mixed with wood pulp to make rayon.
2. nylon is mixed with wood pulp to make rayon.
3. cotton is mixed with wood pulp to make rayon.
4. some chemical are mixed with wood pulp to make rayon.

Q.

Acrylic is -

1. natural fibre of wool.

2. synthetic fibre which has high resistance to shrinkage.

3. first artificial fibre.

4. natural fibre of silk.

Q.

Select the correct option from the given statements.

1. Polymer is a synthetic substance

2. Polymers can be both natural and synthetic
3. Polymers cannot form fibres

4. Polymer is a natural substance

Q.

What is a polymer?

Q.

Rayon is different from synthetic fibres because

1. it has a silk-like appearance.

2. it is obtained from wood pulp.

3. its fibres can also be woven like those of natural fibres.

Q.

Explain how rayon, nylon and polyester are obtained? [3 MARKS]