Polymers Test

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Polymers Test - 55

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following statements is not true about low density polythene?

A
Tough

B
Hard

C
Poor conductor of electricity

D
Highly branched structure

Solution

Low-density polythene. It is obtained by the polymerization of ethane under high pressure of $$1000$$ to $$2000$$ atmosphere at a temperature of $$350\ K$$ to $$570\ K$$ in the presence of traces of dioxygen or a peroxide initiator. They are flexible in nature.
Question 2
1 / -0

The radical of phosphate among the following radicals is?

A
$$PO_4^{2-}$$

B
$$PO_4^{3-}$$

C
$$PO_2^{4}$$

D
$$PO_2^{2-}-$$

Solution
Question 3
1 / -0

Natural rubber is a polymer of which substance?

A
Neoprene

B
Isoprene

C
$$1,3$$-Butadiene

D
Buna-N

Solution

Natural rubber is a polymer of isoprene
Question 4
1 / -0

Which of the following is condensation polymer?

A
Dacron

B
Teflon

C
PVC

D
Polythene

Solution

Teflon, PVC and Polyethene are addition polymers but Dacron is a condensation polymer.
Hence, Option "A" is the correct answer.
Question 5
1 / -0

On the basis of the method of polymerization, polymers are classified as:

A
Only addition polymers

B
Only condensation polymers

C
both addition and condensation polymers

D
Copolymers

Solution

On the basis of the method of polymerization, polymers are classified as both addition and condensation polymers.
Hence, Option "C" is the correct answer.
Question 6
1 / -0

Teflon is a polymer of:

A
Tetrafluoroethylene

B
Tetraiodoethylene

C
Tetrachloroethylene

D
Tetrabromoethylene

Solution

Teflon is a polymer of tetrafluoroethylene $$\mathrm{(C_2F_4)}$$.
Hence, Option "A" is the correct answer.
Question 7
1 / -0

For improving the tensile strength and quality of natural rubber, it is heated with sulphur. What is the name of this process?

A
Polymerization

B
Saponification

C
Vulcanization

D
Equalization

Solution
Question 8
1 / -0

Select the correct statement(s) about the given polymer :
(i) Monomer is $$CH_{2}=CH-CH=CH_{2} $$ and $$ CH_{2}=CH-CN$$.
(ii) It is a copolymer.
(iii) It is an addition polymer.

A
(i) and (ii) only

B
(iii) only

C
(ii) only

D
(i), (ii) and (iii)

Solution

The diagram shows the two monomeric units adding together to form the polymer. It is a copolymer and also an addition polymer.
Question 9
1 / -0

Which set is correctly matched?

A
Dacron or Terylene : Condensation polymer

B
PVC : Biodegradable polymer

C
Nylon - $$6,\: 6$$ : Addition polymer

D
Buna-S rubber : Natural polymer

Solution

A. Dacron or terylene is a polyester, which is formed by the condensation polymerization of ethylene glycol and terephthalic acid, along with the elimination of water molecules.

B. PVC is a non-biodegradable polymer.

C. Nylon 6,6 is made of two monomers each containing 6 carbon atoms, hexamethylenediamine, and adipic acid. It is a condensation polymer.

D. Buna-S- rubber is a synthetic polymer.

So the correct option is A.
Question 10
1 / -0

The monomer of the polymer is:

A
$$CH_{3}CH = CH.CH_{3}$$

B
$$CH_{3}CH = CH_{2}$$

C
$$(CH_{3})_{2} C = C (CH_{3})_{2}$$

D
$$CH_2=C-CH_3$$
$$|$$
$$CH_3$$