Synthetic Fibres and Plastics Test

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Synthetic Fibres and Plastics Test - 2

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following statements is/are correct?

(I) Most synthetic fibres are obtained from coal, petroleum and natural gas.
(II) Acrylic fibres closely resemble wool.
(Ill) Most synthetic fibres have very high moisture absorbing capacity.
(IV) Polyester is prepared from cellulose.

A
I and II only

B
II and III only

C
IV only

D
All of these

Solution

Synthetic fibres do not absorb moisture and polyester is not derived from cellulose, it is a synthetic fibre.
Question 2
1 / -0

Pre-weighed pieces of cloth of nylon, cotton, silk and wool of equal measurements are taken and soaked in a beaker filled with water. After a few minutes, the cloth pieces were taken out of the beaker and weighed again. Which of the following options places them in the correct order of their final weights?

A
Wool > Silk > Nylon > Cotton

B
Cotton > Silk > Nylon > Wool

C
Silk > Wool > Cotton > Nylon

D
Wool > Cotton > Silk > Nylon

Solution

Higher the water absorption capacity, more will be the final weight. Thus, the correct order of their final weights will be, Wool > Cotton > Silk > Nylon.
Question 3
1 / -0

Why is it not advisable to wear clothes made up of synthetic fibres in hot and humid weather?

A
Synthetic fibres catch fire very easily.

B
Synthetic fibres do not absorb sweat.

C
Synthetic fibres stick to the body.

D
Both (b) and (c).

Solution

Clothes made up of synthetic fibres do not absorb water and do not allow the air to pass through. In hot and humid weather, these clothes stick to the body and make us feel uncomfortable.

Question 4

1 / -0

A brief information about three different plastics is given below :

X : Thermoplastic which can be rolled into sheets

V : Thermoplastic which is used as a covering for electric wires.

Z : Thermosetting which is used for making plugs and switches. Identify X, Y and Z,

X Y Z

Melamine Teflon Bakelite

X Y Z

Bakelite Malamine Polythene

X Y Z

Polythene Polyvinyl chloride Bakelite

X Y Z

Polyvinyl chloride Polythene Melamine

Question 5
1 / -0

Which of the following statements about plastics are true ?

(i) All plastics do not have same arrangement of monomer units.
(ii) Melamine resists fire and can tolerate heat better than other plastics.
(iii) Plastics with cross-linked monomers are also known.
(iv) Plastics have limited applications.

A
(i) and (iii) only

B
(iii) and (iv) only

C
(i), (ii) and (iii) only

D
(i), (iii) and (iv) only

Question 6

1 / -0

Match column I with column II and select the correct answer from the codes given below.

Column I		Column II
P.	A synthetic fibre also called as artificial silk	(i)	Spandex
Q.	A synthetic fibre also known as lycra	(ii)	Acrylic
R.	A synthetic fibre that closely resembles wool	(iii)	Rayon
S.	The first true synthetic fibre	(iv)	Nylon

P - (iv), Q - (ii), R - (iii), S - (i)

P - (iii), Q - (i), R - (ii), S - (iv)

P - (ii), Q - (iii), R - (i), S - (iv)

P - (iii), Q - (ii), R - (iv), S - (i)

Question 7
1 / -0

Which of the following materials is the best for making garments and jackets that can be used in wet or damp environment?

A
Polyester

B
Wool

C
Cotton

D
None of these

Solution

Polyester is a water-resistant synthetic fibre which makes it ideal for making garments and jackets that are to be used in wet or damp environment.

Question 8

1 / -0

Match column I with column II and mark the correct option from the codes given below.

Column I	Column II
Polyester	(i) Prepared by using wood pulp
Teflon	(ii) Used for making para chute and stockings
Rayon	(iii) Used for making non-stick cook wares
Nylon	(iv) Fabrics do not wrinkle easily

- (iii), - (iv), - (i), - (ii)

- (iv), - (iii), - (i), - (ii)

- (iv), - (iii), - (ii), - (i)

- (i), - (ii), - (iii), - (iv)

Question 9
1 / -0

Choose the correct option for the given statements.

I. Plastics are generally good conductors of electricity.
II. Ropes made by bake lite are used in cranes and elevators.
III. Teflon is a special plastic on which oil and water do not stick.
IV. Plastic is non-biodegradable, hence not environment friendly.

A

(i) (ii) (iii) (iv)

T T F F

B

(i) (ii) (iii) (iv)

F F T T

C

(i) (ii) (iii) (iv)

T F T F

D

(i) (ii) (iii) (iv)

F T F T

Solution

Ropes made by nylon are used in cranes and elevators.
Question 10
1 / -0

Read the given statements and mark the appropriate answer.

Statement 1: Polyester is synthesised from petrochemicals by linking ester units.

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
Statement 1 is true and statement 2 is false.

D
Both statements 1 and 2 are false.

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Re-Attempt Weekly Quiz Competition

Synthetic Fibres and Plastics Test - 2

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Synthetic Fibres and Plastics Test - 2

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Question 1

I and II only

II and III only

IV only

All of these

Solution

Question 2

Wool > Silk > Nylon > Cotton

Cotton > Silk > Nylon > Wool

Silk > Wool > Cotton > Nylon

Wool > Cotton > Silk > Nylon

Solution

Question 3

Synthetic fibres catch fire very easily.

Synthetic fibres do not absorb sweat.

Synthetic fibres stick to the body.

Both (b) and (c).

Solution

Question 4

X Y Z Melamine Teflon Bakelite

X Y Z Bakelite Malamine Polythene

X Y Z Polythene Polyvinyl chloride Bakelite

X Y Z Polyvinyl chloride Polythene Melamine

Question 5

(i) and (iii) only

(iii) and (iv) only

(i), (ii) and (iii) only

(i), (iii) and (iv) only

Question 6

P - (iv), Q - (ii), R - (iii), S - (i)

P - (iii), Q - (i), R - (ii), S - (iv)

P - (ii), Q - (iii), R - (i), S - (iv)

P - (iii), Q - (ii), R - (iv), S - (i)

Question 7

Polyester

Wool

Cotton

None of these

Solution

Question 8

- (iii), - (iv), - (i), - (ii)

- (iv), - (iii), - (i), - (ii)

- (iv), - (iii), - (ii), - (i)

- (i), - (ii), - (iii), - (iv)

Question 9

(i) (ii) (iii) (iv) T T F F

(i) (ii) (iii) (iv) F F T T

(i) (ii) (iii) (iv) T F T F

(i) (ii) (iii) (iv) F T F T

Solution

Question 10

Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.

Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.

Statement 1 is true and statement 2 is false.

Both statements 1 and 2 are false.

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X Y Z

Melamine Teflon Bakelite

X Y Z

Bakelite Malamine Polythene

X Y Z

Polythene Polyvinyl chloride Bakelite

X Y Z

Polyvinyl chloride Polythene Melamine

(i) (ii) (iii) (iv)

T T F F

(i) (ii) (iii) (iv)

F F T T

(i) (ii) (iii) (iv)

T F T F

(i) (ii) (iii) (iv)

F T F T