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Synthetic plastics, fibre

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

Cellulose is polymer made up from ______________ as monomer units.

a)

Plant

b)

Animal

c)

Glucose

d)

Sugar

2.

Nylon is made up of from ____________, _____ and _____.

a)

Coal only

b)

Coal, water and air

c)

Coal, water and carbon dioxide

d)

Coal and air only

3.

_____________ is known as artificial silk.

a)

Rayon

b)

Nylon

c)

Cotton

d)

Acrylic

4.

Socks, ropes, tents, toothbrushes, car seat belts etc are made up from _____________.

a)

Rayon

b)

Cotton

c)

Acrylic

d)

Nylon

5.

_________fabric made from this fibre does not get

wrinkled easily. It remains crisp and is

easy to wash.

a)

Acrylic

b)

Polyester

c)

Cotton

d)

Rayon

6.

Polycot is a mixture of

__________and cotton. Polywool is a

mixture of __________ and wool.

a)

PVC

b)

Ester

c)

Polyester

d)

Nylon

7.

___________ fibres are more durable and affordable which

makes them more popular than natural fibres.

a)

Natural

b)

Synthetic

c)

Both 1 and 2

d)

None of these

8.

There are someplastics which when moulded once, can

not be softened by heating. These are called ______ plastics.

a)

Polyester

b)

Thermo-plastics

c)

Polyethene

d)

Thermo-setting

9.

Firemen have coating of ________ plastic to make them

flame resistant.

a)

Bakellite

b)

Nylon

c)

Melamine

d)

Rayon

10.

Plastics are _________conductors of heat and electricity.

a)

Good

b)

Poor

c)

Extremely good

d)

None of these

11.

Teflon is a special plastic on which oil and water do not stick. It is used for non-stick coating on

cookwares.

a)

Bakellite

b)

Melamine

c)

PVC

d)

Teflon

12.

Tin, aluminium, and other metal cans _______years and considered to be __________________.

a)

100-150 years biodegradable

b)

100-150 years non- biodegradable

c)

2-5 months biodegradable

d)

500-550, biodegradabel

13.

Paper takes _____________days and considered as ______________.

a)

10-15 days, Biodegradable

b)

10-30 days, non- Biodegradable

c)

10-30 days, Biodegradable

d)

50-55 days, Biodegradable

14.

Reduce, Reuse, Recycle and __________.

a)

Recover

b)

Recycle

c)

Reuse

d)

Reduce

15.

All the synthetic fibres are prepared by a number of processes using raw materials of petroleum origin, called

__________.

a)

Petrochemicals

b)

Nylon

c)

Rayon

d)

Cotton

16.

Many such small units combine to form a large single unit called a ___________.

a)

Polymer

b)

Polyester

c)

Acrylic

d)

Monomer

17.

Silk fibre obtained from __________________.

a)

Cellulose

b)

Silkworm

c)

Plant

d)

Animal

18.

Although ________________ is obtained from a natural source,

wood pulp, yet it is a man-made fibre.

a)

Nylon

b)

Rayon

c)

Acrylic

d)

Polyester

19.

_____________is mixed with cotton to make bed sheets or mixed with wool to make carpets.

a)

Cotton

b)

Nylon

c)

Rayon

d)

Polymer

20.

__________________ is a popular polyester. It can be drawn into very fine fibres that can be woven like any other yarn.

a)

Rayon

b)

Acrylic

c)

Terelyene

d)

Polymer