Free Printable SYNTHETIC FIBRE AND PLASTICS

1.

Tick the correct option :
Acrylic fiber is

a)

is man made fiber

b)

it is soft and light weight

c)

it is artificial wool

d)

All of the above

2.

Cellulose is made up of large number of _______ units.

a)

sucrose

b)

glucose

c)

amino acids

d)

dacron

3.

Mention the type of polymer.

a)

linear

b)

natural

c)

cross linked

d)

synthetic

4.

The synthetic fibre best suited to make this is ______ and is due to its _____property.

a)

Polyester, Elasticity

b)

Nylon,Elasticity

c)

Polyester, High tensile strength

d)

Nylon, High tensile strength

5.

Which of the following plastics objects can be recycled?

i). Electric socket ii). Polythene bag iii).PVC pipe iv). Ashtray

a)

A and B

b)

B and C

c)

A and D

d)

C and D

6.

Out of the following materials ::

a. Which materials are polyesters? b. Which material is a polyamide?

a)

cotton, nylon

b)

terylene, wool

c)

cotton,wool

d)

terylene, nylon

7.

It is not advisable to wear clothes made of synthetic fibre while working near fire because

.

a)

They are uncomfortable in those works

b)

They melt on heating and cause heavy burns

c)

They do not absorb moisture

d)

They are shiny and lustrous

8.

Thermosetting Plastics

a)

Can be reshaped using heat and pressure.

b)

Are lighter plastics

c)

Can be recycled

d)

Can not be reshaped using heat and pressure

9.

Electrical switches are made up of

a)

melamine

b)

bakelite

c)

PVC

d)

polythene

10.

Necklace : bead :: polymer : ________.

a)

Monomer

b)

Dimer

c)

Tetramer

d)

Trimer

11.

Why do we make umbrella with synthetic fiber?

4 lines

12.

Identify the non biodegradable items from the following

a)

Tooth brush

b)

Frying pan handle

c)

vegetable peel

d)

cotton bag

e)

Switches

SYNTHETIC FIBRE AND PLASTICS

Total questions: 12

Worksheet time: 8mins

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