MCQ on Synthetic Fibres and Plastics Class 8
Choose the correct answer.
Question 1.
Pick the synthetic fibre out of the following.
A) Melamine
B) Polythene
C) PVC
D) Nylon
Answer:
B) Polythene
Question 2.
Which of the following is a source of Rayon ?
A) Wool
B) PET
C) Wood pulp
D) Silk
Answer:
C) Wood pulp
Question 3.
Polycot is obtained by mixing
A) Nylon and wool
B) Polyster and wool
C) Nylon and cotton
D) polyster and cotton
Answer:
D) polyster and cotton
Question 4.
Which is thermosetting plastic ?
A) Melamine
B) Polythne
C) PVC
D) Nylone
Answer:
A) Melamine
Question 5.
The material is similar to silk in apearance is
A) Nylon
B) Rayon
C) Polyster
D) Terylene
Answer:
B) Rayon
Question 6.
The most suitable material for the preparation of handles of cooking utensils is
A) Polythene
B) PVC
C) Nylon
D) Bakelite
Answer:
D) Bakelite
Question 7.
Which of the following is not a common property of plastics ?
A) Non-reactive
B) Light in weight
C) Durable
D) Good conductor of electricity
Answer:
D) Good conductor of electricity
Question 8.
The material which is commonly used for making kitchen containers is
A) PVC
B) Acrylic
C) Teflon
D) PET
Answer:
D) PET
Question 9.
Which of the following groups contains all synthetic substances ?
A) Nylon, terylene, wool
B) Cotton, polycot, rayon
C) PVC, polythene, bakelite
D) Acrylic, silk, wool
Answer:
C) PVC, polythene, bakelite
Question 10.
Which of the following represents the correct match for items in column A with those in column B ?
| column A | Column B |
| a) Nylon | i) Thermoplastic |
| b) PVC | ii) Thermosetting plastic |
| c) Bakelite | iii) Fibre |
A) a – ii, b – iii, c – i
B) a – iii, b – i, c – ii
C) a – ii, b – i, c – iii
D) a – iii, b – ii, c – i
Answer:
C) a – ii, b – i, c – iii
| column A | Column B |
| a) Nylon | ii) Thermosetting plastic |
| b) PVC | i) Thermoplastic |
| c) Bakelite | iii) Fibre |
Question 11.
_________ is not a natural fibre.
A) Cotton
B) Silk
C) Wool
D) Nylon
Answer:
D) Nylon
Question 12.
Synthetic fibres are made of __________
A) Polymers
B) Monomers
C) Both A & B
D) None of these
Answer:
A) Polymers
Question 13.
_________ is a synthetic fibre, prepared from coal, water and air.
A) Nylon
B) Rayon
C) Acrylic
D) Polyster
Answer:
A) Nylon
Question 14.
_________ is used in making parachutes.
A) Rayon
B) Nylon
C) Plastic
D) None of these
Answer:
B) Nylon
Question 15.
The combination of two or more fibres is called _________
A) blending
B) bleeding
C) moulding
D) melting
Answer:
A) blending
Question 16.
_________ are poor conductors of heat and electricity.
A) Gold
B) Silver
C) Copper
D) Plastic
Answer:
D) Plastic
Question 17.
Rayon is prepared by _________
A) Coal
B) Oxygen
C) Fibre
D) Cellulose
Answer:
D) Cellulose
Question 18.
The material decomposed by natural process is called _________
A) Non-biodegradable material
B) Biodegradable material
C) Polyester
D) Nylon
Answer:
A) Non-biodegradable material
Question 19.
Fibre is as strong as steel
A) Rayon
B) Nylon
C) Polyester
D) Acrylic
Answer:
B) Nylon
Question 20.
The full form of PVC is _________
A) Poly vinyl chloride
B) Phenyl vinyl chloride
C) Poly vinyl chlorate
D) Poly vinyl chloric acid
Answer:
A) Poly vinyl chloride
Question 21.
The fibres which are obtained from plant and animal source are called
A) Artificial fibres
B) Synthetic fibres
C) Natural fibres
D) None of these
Answer:
C) Natural fibres
Question 22.
The fibres which are obtained from petroleum are called _________
i) Artificial fibres
ii) Synthetic fibres
iii) Natural fibres
iv) Man made fibres
A) i only
B) ii only
C) iii only
D) i, ii and iv
Answer:
D) i, ii and iv
Question 23.
_________ is wrinkle free.
A) Wool
B) Cotton
C) Polyster
D) Silk
Answer:
C) Polyster
Question 24.
Example of thermoplastic is _________
A) Bakelite
B) Polyethene
C) PVC
D) Both B & C
Answer:
D) Both B & C
Question 25.
Artificial Silk among these is _________
A) Nylon
B) Acrylic
C) Rayon
D) Silk
Answer:
C) Rayon
Question 26.
This fibre is stronger than any other fibre
A) Rayon
B) Polyester
C) Acrylic
D) Nylon
Answer:
D) Nylon
Question 27.
Silk : Animal:: Nylon : ?
A) Plant
B) Animal
C) Petro chemical
D) A or B
Answer:
C) Petro chemical
Question 28.
The correct order is
A) monomer → fibre → polymer
B) polymer → monomer → fibre
C) monomer → polymer → fibre
D) None
Answer:
C) monomer → polymer → fibre
Question 29.
This is obtained from coal
A) Nylon
B) Rayon
C) Acrylic
D) Polyester
Answer:
A) Nylon
Question 30.
Assertion (A) : Rayon is a natural fibre
Reason : Rayon is prepared by using wood pulp.
A) A and R are true, R Supports A
B) A and R are true, R does not Support A
C) A is true, R is false
D) Both A and R are false
Answer:
B) A and R are true, R does not Support A
Question 31.
PET means
A) Poly Ethylene terapthalate
B) Poly Engine truck
C) Perfect Energy treatment
D) Power Energy train
Answer:
A) Poly Ethylene terapthalate
Question 32.
What will happen, if parachutes made with cotton ?
A) Air escapes from the holes of cloth
B) Water absorbs by the cloth
C) Heavy weight to carry
D) Above all
Answer:
D) Above all
Question 33.
A cloth merchant sells silk clothes very cheaply. You may guess the reason as the cloth made with
A) Nylon
B) Acrylic
C) Rayon
D) Polyester
Answer:
C) Rayon
Question 34.
Polymers are long chain molecules was demonstrated by __________
A) Staudinger
B) Baekeland
C) Parkes
D) Baumann
Answer:
A) Staudinger
Question 35.
| S.No. | Blending |
| 1. | cotton, polyester |
| 2. | cotton, wool |
| 3. | nylon, polyester |
Which of the above blending fibre gives both wrinkle free and water absorbant?
A) 1
B) 2
C) 3
D) None
Answer:
C) 3
Question 36.
New articles made with plastic wastage is __________
A) reuse
B) recyle
C) recover
D) reduce
Answer:
B) recyle
Question 37.
The figure shows
A) Linear arrangement of monomers
B) Cross-linked arrangements of monomers
C) Circular arrangement of monomers
D) Square arrangement of monomers
Answer:
A) Linear arrangement of monomers
Question 38.
The given fibres make us very comfortable in different situations and seasons like winter, summer, sweating etc.
A) Synthetic fibres
B) Natural fibres
C) Blended fibres
D) Strong fibres
Answer:
C) Blended fibres
Question 39.
“Synthetic fibres save the nature” the best reason is __________
A) man does not depend on animals for fibres
B) man does not depend on factories for fibres
C) man does not depend on plants for fibres
D) A and C
Answer:
D) A and C
Question 40.
If fibre catches to a person, which of the following is better to use to cover over him and to put off fire
A) Nylon cloth
B) Cotton cloth
C) Polyester cloth
D) Acrylic cloth
Answer:
B) Cotton cloth
Question 41.
__________ is the only synthetic fibre obtained from plants cellulose.
A) Nylon
B) Plastic
C) Rayon
D) None
Answer:
C) Rayon
Question 42.
The handles of utensils are made up of
A) Bakelite
B) Melamine
C) Aluminium
D) Gold
Answer:
A) Bakelite
Question 43.
Electrical switches are made of
A) Melamine
B) Nylon
C) Bakelite
D) Rayon
Answer:
C) Bakelite
Question 44.
Plastics which moulded once cannot be softened by heating are called __________
A) PET
B) Biodegradable plastics
C) Thermoplastics
D) Thermosetting plastics
Answer:
D) Thermosetting plastics
Question 45.
P : Thermoplastic which will soften when heated
Q : Thermosetting plastics are not remouldable
A) P is true and Q is False
B) P & Q are False
C) P is False & Q is true
D) P and Q are true
Answer:
D) P and Q are true
Question 46.
Which of the following is a thermosetting plastic ?
i) Bakelite
ii) Melamine
iii) Polythene
iv) PVC
A) ii and iii only true
B) i and iv only true
C) i and ii only true
D) i and iv only true
Answer:
C) i and ii only true
Question 47.
Which of the following is not a common property of plastics ?
A) Non-reactive
B) Light in weight
C) Durable
D) Good conductor of electricity
Answer:
D) Good conductor of electricity
Question 48.
The plastics used in manufacturing toys, combs is __________
A) Thermoplastics
B) Thermosetting plastics
C) Bakelite
D) Melamine
Answer:
A) Thermoplastics
Question 49.
Statement A : Petrochemicals are used to manufacture synthetic fibres.
Statement B : Petrochemicals are obtained from petroleum.
A) Both A and B are true
B) A is true but B is false
C) A is false but B is true
D) Both A and B are false
Answer:
A) Both A and B are true
Question 50.
Nylon is used in making of __________
i) Swim suits
ii) Diapers and bandages
iii) Parachute cloth
iv) Sports wear
A) ii and iii only
B) i, iii and iv only
C) ii and iv only
D) i and iii only
Answer:
D) i and iii only
Question 51.
The figure shows
A) linear arrangement of monomers
B) cross-linked arrangements of monomers
C) circular arrangement of monomers
D) square arrangement of monomers
Answer:
A) linear arrangement of monomers
Question 52.
The given articles are made with
A) Bakelite
B) Melamine
C) Nylon
D) PET
Answer:
A) Bakelite
Question 53.
Which of the following is not a synthetic fibre ?
A) Acrylic
B) Nylon
C) Wool
D) Polyster
Answer:
C) Wool
Question 54.
1) Rayon is also called cellulose fibre
2) Acrylic is also called fake fur
Choose the correct answer.
A) 1 – True, 2 – True
B) 1 – True, 2 – False
C) 1 – False, 2 – True
D) 1 – False, 2 – False
Answer:
A) 1 – True, 2 – True
Question 55.
P : Nylon is the first synthetic fibre.
Q : Nylon is thermosetting plastic.
A) P – true, Q – true
B) P – true, Q – false
C) P – false, Q – true
D) P – false, Q – false
Answer:
B) P – true, Q – false
Question 56.
What are the steps taken by you by knowing the impacts of improper use of plastics on environment ?
i) I will reduce the utilization of plastic
ii) Plastic wastage is sent to waste management industries
iii) I suggest only recyclable plastic
iv) I will nature the people aware on impact of plastic on environment
A) ii and iii only true
B) iii and iv only true
C) i, ii, iii and iv true
D) i and ii only true
Answer:
C) i, ii, iii and iv true
Question 57.
What is the suggestion made by you to your mother while she is cooking by knowing differences between natural and synthetic fibres ?
A) I suggest her to wear polyster made clothes.
B) I suggest her to wear Acrylic made clothes.
C) I suggest her to wear cotton made clothes.
D) I suggest her to wear Nylon made clothes.
Answer:
C) I suggest her to wear cotton made clothes.
Question 58.
P : Thermoplastic which will soften when heated
Q : Thermosetting plastics are not remouldable
A) P is True and Q is False
B) P & Q are False
C) P is False & Q is True
D) P and Q are True
Answer:
D) P and Q are True
Question 59.
Which of the following is a thermosetting plastic ?
i) Bakelite
ii) Melamine
iii) Polythene
iv) PVC
A) ii and iii only true
B) i and iii only true
C) i and ii only true
D) i and iv only true
Answer:
C) i and ii only true
Question 60.
Nylon : Synthetic fibre :: 
:
Cellulose fibre
A) Rayon
B) Acrylic
C) Polyester
D) Silk
Answer:
A) Rayon
Question 61.
Which of these fibres is also known as artificial silk ?
A) rayon
B) acrylic
C) fibre glass
D) carbon fibre
Answer:
A) rayon
Match the following.
Question 1.
| List – A | List – B |
| i) Jute | a) synthetic fibre |
| ii) Acrylic | b) natural fibre |
| c) plastic |
Answer:
i – b, ii – a
| List – A | List – B |
| i) Jute | b) natural fibre |
| ii) Acrylic | a) synthetic fibre |
Question 2.
| List – A | List – B |
| i) Synthetic wool | a) polyester |
| ii) Synthetic silk | b) rayon |
| c) acrylic |
Answer:
i – c, ii – b
| List – A | List – B |
| i) Synthetic wool | c) acrylic |
| ii) Synthetic silk | b) rayon |
Question 3.
| List – A | List – B |
| i) Thermoplastic | a) bucket |
| ii) Thermosetting plastic | b) cooker handle |
| c) copper pan |
Answer:
i – a, ii -b
| List – A | List – B |
| i) Thermoplastic | a) bucket |
| ii) Thermosetting plastic | b) cooker handle |
Question 4.
| List – A | List – B |
| i) Plastics are Poor Conductors | a) dress materials |
| ii) Plastic is Non-reactive | b) electrical wires |
| c) containers |
Answer:
i – b, ii – c
| List – A | List – B |
| i) Plastics are Poor Conductors | b) electrical wires |
| ii) Plastic is Non-reactive | c) containers |
Question 5.
| List – A | List – B |
| i) Biodegradable | a) air |
| ii) Non-Biodegradable | b) polythene |
| c) banana |
Answer:
i – c, ii – b
| List – A | List – B |
| i) Biodegradable | c) banana |
| ii) Non-Biodegradable | b) polythene |