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Synthetic fibres & plastics CBSE 80

Total questions: 102

Worksheet time: 51mins

Name
Class
Date
1.

Identify the source of natural fibre from plants?

a)

Rayon

b)

Jute

c)

Sheep

d)

Silk

2.

In "Identifying fibres-burning test", if the yarn melts in flame , then the fibre is__________

a)

Wool

b)

Rayon

c)

Nylon

d)

All

3.

The creator of first plastic parkesine is_______

a)

Dr. Bakeland

b)

Staudinger

c)

Alexander parkes

d)

Rajagopalan vasudevan

4.

______fibre is made up from plant cellulose, it absorbs water easily.

a)

Silk

b)

Wool

c)

Nylon

d)

Rayon

5.

The material which is not decomposed by natural process is _________

a)

Non biodegradable material

b)

Bio degradable material

c)

Left over food

d)

Wood

6.

_________ is the first fully synthetic fibre.

a)

Acrylic

b)

Polyester

c)

Nylon

d)

Rayon

7.

Paheli Is Taking Preparation For Her Final Examination. She Is Writing Some Statements About “Nylon” But She Confused To Know Whether The Statements Are Correct Or Not? Would You Help Her?

a)

Nylon is the first fully synthetic fibre.

b)

Nylon is made up of the repeating units of amide chemical.

c)

Nylon is a thermosetting polymer.

d)

Nylon fibres absorb very little water.

8.

PET is a very familiar form of

a)

chemical

b)

monomer

c)

polyester

d)

polyphenyl

9.

What of the following is used for making stockings and parachutes?

a)

Bakelite

b)

Wool

c)

Nylon

d)

Cotton

10.

One of the advantages of nylon over rayon is that nylon:

a)

Is wrinkle free.

b)

Has low elasticity.

c)

Is a natural fibre.

d)

Is a good conductor of electricity.

11.

Which of the following material is a mixture of two fibres?

a)

Jute

b)

Polywool

c)

Polyester

d)

Nylon

12.

Which of the following is not manufactured from high-density polythene?

a)

Containers

b)

Pipes

c)

Candles

d)

Toys

13.

Fibres of _______ resemble that of silk and hence, it is popularly known as ‘artificial silk’.

a)

acrylic

b)

polyester

c)

rayon

d)

nylon

14.

Firefighters’ uniform is coated with a plastic that is fire resistant. Identify the plastic from the given options.

a)

Teflon

b)

Melamine

c)

PET

d)

Polyester

15.

Identify the type of plastic that can best be used to make electrical switches.

a)

PVC

b)

Polythene

c)

PET

d)

Bakelite

16.

Modern non-stick cookware and the flat end of an electric iron has a coating of a polymer. Identify the name of the polymer.

a)

PVC

b)

Rayon

c)

Teflon

d)

Polyester

17.

Terylene is a popular form of

a)

Polyester

b)

Monomer

c)

Plastic

d)

Nylon

18.

Select the correct option from the given statements.

a)

Polymers cannot form fibres

b)

Polymers can be both natural and synthetic

c)

Polymer is a natural substance

d)

Polymer is a synthetic substance

19.

Which of the following groups contain only synthetic fibres?

a)

Nylon, Terylene, Wool

b)

Cotton, Polycot, Rayon

c)

PVC, Polythene, Bakelite

d)

Acrylic, Silk, Wool

20.

Petrochemicals are

a)

mixtures of petrol and chemical fertilizer.

b)

materials obtained from petroleum refining.

c)

mixtures of coal and petrol.

d)

mixtures of wood and chemicals.

21.

Assertion: Acrylic fibres are used in making socks and shawls.

Reason: Acrylic fibres are a replacement or woolen fibres.

a)

Both assertion and reason are true and the reason is the correct explanation of assertion.

b)

Both assertion and reason are true but the reason is not correct for the assertion.

c)

The assertion is true but the reason is false.

d)

The assertion is false but the reason is true.

22.

Pickles are stored in plastic bottles mainly because they are:

a)

non-biodegradable

b)

good insulators

c)

durable

d)

non-reactive

23.

Polyethylene terephthalate belongs to which class of synthetic polymer?

a)

Plastic

b)

Polyolefin

c)

Nylon

d)

Polyester

24.

In Which Of The Following Statement Is Or Are Incorrect?

a)

Nylon was made in the year 1931.

b)

Nylon developed in Netherlands and London.

c)

Nylon is not attacked by moths and ordinary chemicals.

d)

Nylon fibre have high abrasion resistance

25.
Which of the following option is incorrect statement about rayon?
a)
It is highly absorbent and soft
b)
it is obtained from wood pulp
c)
it is mixed with cotton to make bedsheets
d)
it is a natural fibre
26.
Which is the correct statement about nylon?
a)
It is a natural fibre
b)
It is obtained from cellulose
c)
It is a strong fibre
d)
it is a mixture of polyester and cotton
27.
Jute is
a)
a man made fibre
b)
an animal fibre
c)
it melts on heating
d)
it is a plant fibre
28.
Tick the wrong statement about cotton
a)
a plant fiber
b)
it is a form of polymer called cellulose
c)
it is wrinkle free
d)
it absorbs sweat
29.
Tick the correct option about PET bottles
a)
Its full form is poly-ethylene terephthalate
b)
It is bio degradable
c)
it  corrodes easily
d)
All of the above options
30.
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
31.
Nylon is not used for making
a)
ropes for climbing
b)
blankets
c)
parachutes
d)
seat belts in cars
32.
synthetic fiber made from coal, water and air is
a)
rayon
b)
nylon
c)
acrylic
d)
polyester
33.
Bakelite is an example of
a)
thermosetting plastic
b)
thermoplastic
c)
synthetic fiber
d)
none of the above
34.
Electrical switches are made up of
a)
melamine
b)
bakelite
c)
PVC
d)
polythene
35.

Cellulose is made up of large number of _______ units.

a)

sucrose

b)

glucose

c)

amino acids

d)

dacron

36.

Mention the type of polymer.

a)

linear

b)

natural

c)

cross linked

d)

synthetic

37.
a)

rayon

b)

nylon

c)

polyester

d)

acrylic

38.



(a)  

39.

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

40.

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

41.

Synthetic fibres are made from raw materials called (a)  

42.

Which of the following is a thermosetting plastic?

a)

Formica

b)

Polyester

c)

PVC

d)

Thermocol

43.

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

44.

PET is a kind of (a)   .

45.

Name the plastic used for making water pipes

a)

Polythene

b)

PVC

c)

Acrylic

d)

Bakelite

46.

Select 2 polyester fibres

a)

Polythene

b)

PET

c)

Terylene

d)

Melamine

47.

Name the plastic used for non - stick coating

(a)  

48.

Many small unit combine together to form a large unit called (a)  

49.

Cooking pans have plastic handles because

a)

They are light, durable and strong

b)

They are non- reactive

c)

They are poor conductors of heat and electricity

d)

They do not catch fire

50.

Poly + Cot = ______

a)

Polycotton

b)

Polcot

c)

Polycot

d)

Terrycot

51.

Silk fibre is obtained from silk worm whereas artificial silk is obtained by the chemical treatment of _______________.

a)

paper pulp

b)

Rayon

c)

Coal, air and water

d)

wood pulp

52.

Polythene which is used to make polythene bags is an example of a ________.

a)

Thermoplastics

b)

thermosetting plastics

53.

Iron rusts when it is exposed to ______________ and _____________.

a)

Air, Water

b)

Air, Fire

c)

Oxygen, Fire

d)

Fire, Water

54.

Synthetic fibre popular for its strength

(a)  

55.

The plastics which gets deformed easily on heating and can be bent easily is called (a)  

56.

Plastics which resists fire and can tolerate heat better than other plastics

a)

Bakelite

b)

Melamine

c)

Polythene

d)

PVC

57.

See the figure given below and select the correct statements regarding polymers.

1. Figure (X) shows structure of a monomer while figure (Y) shows structure of a polymer.

2. Small boxes in the structure represent monomers that are joined to give a polymer.

3. Figure (X) shows structure of a linear polymer while (Y) shows structure of a cross-linked polymer.

a)

1 and 2 only

b)

1 and 3 only

c)

2 and 3 only

d)

All are correct.

58.

Atul was climbing mountain and he wondered about the strength of rope in his hand which was stronger than a steel wire. This rope would have been made up of:

a)

Polyester

b)

Nylon

c)

Rayon

d)

Cotton

59.

Read the given statements and mark the appropriate answer.

Statement 1: Fabric made from this polyester does not get wrinkled easily.

Statement 2: Polyester is a natural fibre.

a)

Both statements 1 and 2 are true and

statement 2 is the correct explanation

of statement 1.

b)

Both statements 1 and 2 are true

but statement 2 is not the correct

explanation of statement 1.

c)

Both statements 1 and 2 are false.

d)

Statement 1 is true and statement 2

is false.

60.

Nylon is obtained by

a)

Treatment of wood pulp.

b)

Mixing coal, air and water.

c)

Solidifying water.

d)

Mixing acids and bases.

61.

Which of the following is not a blended fibre?

a)

Terrycot

b)

Terrylene

c)

Polycotton

d)

Terywool

62.

The first synthetic fibre formed from a natural material wood pulp is

a)

acrylic

b)

rayon

c)

nylon

d)

polyester

63.

A fibre which is as soft as wool is

a)

rayon

b)

nylon

c)

polyester

d)

acrylic

64.

Necklace : bead :: polymer : ________.

a)

Monomer

b)

Dimer

c)

Tetramer

d)

Trimer

65.

Main source of raw material for producing synthetic fibre is :

a)

CNG

b)

LPG

c)

Refined oil.

d)

Petroleum

66.

Which one of the following can be semi-synthetic fibre?

a)

Nylong

b)

Rayon

c)

Acrylic

d)

PET

67.

The long-chained polymers made by linking several ester units is called

a)

polythene

b)

polyester

c)

polypropene

d)

polystyrene

68.

Which of the following will soak less water?

a)

Nylon

b)

Silk

c)

Wool

d)

Cotton

69.

We should not wear synthetic clothes while cooking in the kitchen or in a laboratory.

a)

True

b)

False

70.

A polymer is a chain of many small units joined together which are called (a)   .

71.

From which part of sheep is wool made from?

a)

Skin

b)

Toes

c)

Fleece

d)

All the above

72.

A chain of small chemical units combined to form a large single unit is called ____

a)

a) Polymer

b)

b) Poly

73.

Polythene and PVC are examples of

a)

a) Bio degradable substance

b)

b) Thermoplastics

74.

Plastics which when moulded once, cannot be softened by heating. Such plastics are called

a)

Polyster

b)

Thermosetting Plastics

75.

Polycot is made by mixing two types of fibres namely

(a)  

76.

The 4 R Principle is

(a)  

77.

(a)   is an example of natural polymer

78.

Which of the following is Non-biodegradable

a)

Woolen clothes

b)

Plastic Bag

79.

Bakelite and Melamine are examples of

a)

Silk

b)

Thermosetting Plastics

80.

Fire proof plastic uniform worn by fire fighters has a coating of (a)   to make it fire resistant

81.

The coating on modern non- stick cookware and electric iron is of

a)

Terrycot

b)

Teflon

82.

Linear and lightly cross-linked polymers form a class of plastics are called (a)  

83.
What are some advantages of synthetic materials?
a)
Cheaper to manufacture 
b)
Stronger than similar products made from natural material
c)
Often better quality 
d)
All of the above
84.
Can synthetic material be used for your clothes or anything else?
a)
Yes
b)
No
85.
Can synthetic materials be renewable?
a)
Yes
b)
No
86.
What is the difference between a natural and synthetic material?
a)
Natural material is made from chemicals and synthetic is made from nature
b)
Natural material is made directly from nature and synthetic material is made from chemicals
c)
Natural material is made from petroleum and synthetic material is made from wool
d)
Natural material is made from trees and synthetic materials are made from plastics
87.
What are the advantages of using synthetic materials?
a)
Cheaper 
b)
It is fake so it dosen't hurt the enviroment
c)
Better quality 
d)
Its made out of fossil fuels
88.
What is plastic?
a)
A synthetic material made of ONLY  minerals
b)
A synthetic material made of ONLY coal
c)
A synthetic material made out of natural gas,plants,mierals,and petroleum
d)
A synthetic material made only of natural gas
89.
What does it mean to refine the plastic?
a)
Combine new molecules
b)
Burn it 
c)
Drill it from the ground
d)
Seperate the different molecules 
90.
What is an example of a natural material?
a)
kevlar
b)
gel
c)
wood
d)
medicine
91.
Natural Materials are more durable than Synthetic Materials
a)
True
b)
False
92.
What is better plastic or bio 
plastic?
a)
Bio plastic
b)
plastic
93.
Is this image plastic?
a)
Yes
b)
no
94.
What are the advantages of 
synthetic? 
a)
 cheaper,stronger
b)
not renewable
95.
Plastics are of two type
a)
True
b)
False
96.
Which of the following is a synthetic fibre?
a)
Terrywool
b)
Terrycot
c)
Terylene
d)
All of them.
97.
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.
98.
Melamine is used for making
a)
kitchenware.
b)
floor tiles.
c)
fire-resistant fabrics.
d)
all of them.
99.
Thermosets cannot be remoulded
a)
True
b)
False
100.
Plastic is indispensable but its use should be minimized.
a)
False
b)
True
101.
Acrylic fibres are a substitute for natural wool.
a)
True
b)
False
102.
Clothes made of pure synthetic fibres are lustrous and shiny.
a)
True
b)
False

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