Synthetic Fibres and Plastics Test

Result

Synthetic Fibres and Plastics Test - 9

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Weekly Quiz Competition

Question 1
1 / -0

To which of the following does the 4R principle apply the most?

A
Synthetic fibre

B
Natural fibre

C
Metal

D
Plastic

Solution

The 4R principle i.e., reduce, reuse, recycle and recover applies for plastic.
Question 2
1 / -0

Which of the following statements is NOT true?

A
Thermosetting plastics are bad conductors of heat and electricity.

B
Thermoplastics are good conductors of heat and electricity.

C
Plastics do not get corroded easily.

D
Plastic is also a polymer.

Solution

Thermoplastics are bad conductors of heat and electricity.
Question 3
1 / -0

Which of the following is a property of thermo setting plastic?

A
Flame resistant

B
Non-corrosive

C
Mouldable

D
All of the above

Solution

Plastic as such is not flame resistant but thermosetting plastics resist fire, non- corrosive and mouldable. They can be used for making kitchen ware.
Question 4
1 / -0

Which of the following is NOT a natural polymer?

A
Natural rubber

B
Polyester

C
Protein

D
Starch

Solution

Natural polymers are polymers produced by living organisms. They include natural rubber and natural food stuffs. Polyester is a synthetic fibre (not a natural polymer).
Question 5
1 / -0

Which of the following fabrics is made by mixing two types of fibres?

A
Cotton

B
Polywool

C
Rayon

D
Nylon

Solution

Polywool is a mixture of polyester and wool.
Question 6
1 / -0

Which of the following is purely a synthetic fibre?

A
Rayon

B
Nylon

C
Cotton

D
Flax

Solution

Nylon is made up of petrochemicals and is purely a synthetic fibre. Rayon is made of wood pulp. Cotton and flax are natural fibres.

Question 7

1 / -0

Which of the following differences regarding thermoplastics and thermo- setts is/are true?

	Thermoplastics	Thermosets
(i)	Soft	Hard
(ii)	Can withstand heat	Cannot withstand heat
(iii)	No cross linkages	Cross linkages are present

Only (i)

Only (i) and (ii)

Only (i) and (iii)

(i),(ii) and (iii)

Solution

Differences (i) and (iii) are true of thermoplastics and thermosetts.

Question 8
1 / -0

Which of the following properties of nylon are most convenient for its use?

A
It is soft, strong and heavy.

B
It is strong, elastic and light.

C
It is soft, inexpensive and strong.

D
It is expensive, soft and light.

Solution

Nylon is strong, elastic and light.
Question 9
1 / -0

Which of the following is an example of a heavily cross linked polymer?

A
Melamine

B
Polythene

C
Nylon

D
Polyester

Solution

Melamine is an example of thermoset plastics. Thermoset plastics are heavily cross-linked polymers and hence, they are rigid.
Question 10
1 / -0

How does the burning of synthetic polymers such as plastic pollute the environment?

A
By releasing smoke and toxic gases

B
By releasing water vapour and haze

C
By releasing water vapour and smoke

D
By forming smog and rain

Solution

The burning of synthetic polymers release smoke and toxic gases which pollute the environment.

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Re-Attempt Weekly Quiz Competition

Synthetic Fibres and Plastics Test - 9

Result

Synthetic Fibres and Plastics Test - 9

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Rank

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SHARING IS CARING

Question 1

Synthetic fibre

Natural fibre

Metal

Plastic

Solution

Question 2

Thermosetting plastics are bad conductors of heat and electricity.

Thermoplastics are good conductors of heat and electricity.

Plastics do not get corroded easily.

Plastic is also a polymer.

Solution

Question 3

Flame resistant

Non-corrosive

Mouldable

All of the above

Solution

Question 4

Natural rubber

Polyester

Protein

Starch

Solution

Question 5

Cotton

Polywool

Rayon

Nylon

Solution

Question 6

Rayon

Nylon

Cotton

Flax

Solution

Question 7

Only (i)

Only (i) and (ii)

Only (i) and (iii)

(i),(ii) and (iii)

Solution

Question 8

It is soft, strong and heavy.

It is strong, elastic and light.

It is soft, inexpensive and strong.

It is expensive, soft and light.

Solution

Question 9

Melamine

Polythene

Nylon

Polyester

Solution

Question 10

By releasing smoke and toxic gases

By releasing water vapour and haze

By releasing water vapour and smoke

By forming smog and rain

Solution

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