Match the column I with column II and mark the appropriate choice. Column I Column II (A) Raincoats, hand bags (i) PHBV (B) Laminated sheets (ii) PVC (C) Television cabinets (iii) Urea-formaldehyde resin (D) Orthopaedic devices (iv) Polystyrene

(A) $$\rightarrow$$ (ii), (B) $$\rightarrow$$ (iii), (C) $$\rightarrow$$ (iv), (D) $$\rightarrow$$ (i)

(A) $$\rightarrow$$ (i), (B) $$\rightarrow$$ (ii), (C) $$\rightarrow$$ (iii), (D) $$\rightarrow$$ (iv)

(A) $$\rightarrow$$ (iv), (B) $$\rightarrow$$ (i), (C) $$\rightarrow$$ (ii), (D) $$\rightarrow$$ (iii)

(A) $$\rightarrow$$ (iii), (B) $$\rightarrow$$ (iv), (C) $$\rightarrow$$ (i), (D) $$\rightarrow$$ (ii)

MCQ Questions for Class 12 Engineering Chemistry Polymers Quiz 11

PDI for natural polymers is generally close to:

0%
zero
0%
$$1$$
0%
$$10$$
0%
$$100$$

What is not true regarding free radical polymerisation of propene?

0%
Without proper control, atactic polypropylene is formed
0%
Use of Ziegler-Natta catalyst results in isotactic polypropylene
0%
During polymerisation, a linear unbranched, crystalline polymer is usually obtained
0%
During polymerisation, a secondary free radical is produced in every step

Which one of the following is not an example of chain growth polymer?

0%
Neoprene
0%
Buna-S
0%
PMMA
0%
Glyptal

Which of the following is a monomer of teflon?

0%
Difluoroethane
0%
Trifluoroethane
0%
Tetrafluoroethane
0%
None of these

In the reaction sequence, (X) is:

0%
cyclohexanone
0%
caprolactum
0%
$$HO(CH_2)_6NH_2$$
0%
hexamethylene disocyanate

Natural rubber is not used in making footwear for polar regions because:

0%
natural rubber becomes soft at temperature lower than $${ 10 }^{ o }C$$
0%
natural rubber becomes brittle at temperature lower than $${ 10 }^{ o }C$$
0%
natural rubber melts at temperature lower than $${ 10 }^{ o }C$$
0%
natural rubber becomes stronger at temperature lower than $${ 10 }^{ o }C$$

Which of the following pair of monomers is used in preparation of PHBV ?

0%
$$\beta -$$ hydroxy valeric acid, amino caproic acid
0%
$$\beta -$$ hydroxy butyric acid, $$\beta -$$ hydroxy valeric acid
0%
$$\beta -$$ hydroxy butyric acid, adipic acid
0%
Lactic acid, adipic acid

The monomers of BUNA-S rubber is:

0%
vinyl chloride and sulphur
0%
butadiene
0%
styrene and butadiene
0%
isoprene and butadiene

Which compound polymerises to neoprene?

0%
$${ CH }_{ 2 }=CHCl$$
0%
$${ CH }_{ 2 }=CCl-CH={ CH }_{ 2 }$$
0%
$${ Cl }_{ 2 }C=C{ Cl }_{ 2 }$$
0%
$${ F }_{ 2 }C={ CF }_{ 2 }$$

Bakelite is obtained from phenol by reacting with:

0%
$$(CH_2OH)_2$$
0%
$$CH_3CHO$$
0%
$$CH_3COCH_3$$
0%
$$HCHO$$

Which polymer is used in controlled drugs capsules?

0%
$$SBR$$
0%
$$PTFE$$
0%
$$PHBV$$
0%
$$PAN$$

Teflon is most commonly used in:

0%
making water pipes and electrical cable insulation
0%
blankets and clothing
0%
non-sticky coating
0%
latex paints and adhesives

Which of the following fibres is made of polyamides?

0%
Dacron
0%
Orion
0%
Nylon
0%
Rayon

Which of the following is/are true statement(s) for the preparation of Teflon?

0%
It is produced by condensation polymerization
0%
Water acts as catalyst
0%
The monomer used is tetrafluoroethane
0%
The monomer is obtained from carbon tetrachloride

Match the polymers given in column I with the monomers in column II and mark the appropriate choice.

0%
(A) $$\rightarrow$$ (ii), (B) $$\rightarrow$$ (i), (C) $$\rightarrow$$ (iii), (D) $$\rightarrow$$ (iv)
0%
(A) $$\rightarrow$$ (iii), (B) $$\rightarrow$$ (iv), (C) $$\rightarrow$$ (i), (D) $$\rightarrow$$ (ii)
0%
(A) $$\rightarrow$$ (i), (B) $$\rightarrow$$ (iii), (C) $$\rightarrow$$ (ii), (D) $$\rightarrow$$ (iv)
0%
(A) $$\rightarrow$$ (iv), (B) $$\rightarrow$$ (ii), (C) $$\rightarrow$$ (iii), (D) $$\rightarrow$$ (i)

Which among the following is a cross-linked polymer?

0%
Polyesters
0%
Glycogens
0%
Melamine-formaldehyde
0%
Polyvinyl chloride

Heating rubber with sulphur is known as:

0%
galvanization
0%
bessemerisation
0%
vulcanization
0%
sulphonation

Natural rubber is a polymer of:

0%
1, 1-dimethylbutadiene
0%
2-methyl-1, 3-butadiene
0%
2-chlorobuta-1, 3-diene
0%
2-chlorobut -2-ene

In vulcanization of rubber :

0%
sulphur reacts to form a new compound
0%
sulphur cross-links are introduced
0%
sulphur forms a very thin protective layer over rubber
0%
all statements are correct

Which of the following is not an example of rubber?

0%
Polychloroprene
0%
Buna-N
0%
Butadiene-styrene copolymer
0%
Polyacrylonitrile

Buna-N is used in making oil seals and tank linings, etc. because:

0%
it is resistant to the action of lubricating oil and organic solvents
0%
it is more elastic than natural rubber
0%
it can be stretched twice its length
0%
it does not melt at high temperatures

Which of the following is not true about polymers?

0%
Polymers are high molecular mass macro-molecules.
0%
Polymers may be of natural or synthetic origin.
0%
Condensation polymers are made up of one type of monomers only.
0%
They have high viscosity and do not carry any charge.

Which of the following polymers does not involve cross-linkages?

0%
Vulcanised rubber
0%
Bakelite
0%
Melamine
0%
Teflon

0%
trans 1, 4 configuration
0%
cis 1, 4 configuration
0%
both cis and trans 1, 4 configuration
0%
none of these

Which of the following is not a semi-synthetic polymer?

0%
Cis-Polyisoprene
0%
Cellulose nitrate
0%
Cellulose acetate
0%
Vulcanized rubber

Which of the following is monomer of the given polymer?

Few polymers are matched with their uses. Point out the wrong match.

0%
Polyester - Fabric, tyre cords, safety belts
0%
Nylon 6 - Ropes, tyre cords, fabrics
0%
Bakelite - Packaging industry, lubricant
0%
Teflon - Oil seals, gaskets, non-stick utensils

On complete hydrogenation, natural rubber produces:

0%
ethylene-propylene copolymer
0%
vulcanized rubber
0%
polypropylene
0%
polybutylene

Match the column I with column II and mark the appropriate choice.

	Column I		Column II
(A)	Raincoats, hand bags	(i)	PHBV
(B)	Laminated sheets	(ii)	PVC
(C)	Television cabinets	(iii)	Urea-formaldehyde resin
(D)	Orthopaedic devices	(iv)	Polystyrene

0%
(A) $$\rightarrow$$ (i), (B) $$\rightarrow$$ (ii), (C) $$\rightarrow$$ (iii), (D) $$\rightarrow$$ (iv)
0%
(A) $$\rightarrow$$ (iv), (B) $$\rightarrow$$ (i), (C) $$\rightarrow$$ (ii), (D) $$\rightarrow$$ (iii)
0%
(A) $$\rightarrow$$ (ii), (B) $$\rightarrow$$ (iii), (C) $$\rightarrow$$ (iv), (D) $$\rightarrow$$ (i)
0%
(A) $$\rightarrow$$ (iii), (B) $$\rightarrow$$ (iv), (C) $$\rightarrow$$ (i), (D) $$\rightarrow$$ (ii)

Natural rubber or raw rubber consists of basic material latex which is a dispersion of isoprene. During the treatment, this isoprene forms a high molecular weight polymer of isoprene. Natural rubber can be obtained from five hundred different species of plants.
Consider the following properties of rubber,
(i) Tensile strength of vulcanized rubber is almost ten times more than raw rubber.
(ii) The elasticity of the raw rubber is very high.
Choose the correct option.

0%
(i) is true (ii) is false.
0%
(i) is false (ii) is true.
0%
Both (i) and (ii) are true.
0%
Both (i) and (ii) are false.

Which of the polymer has weakest intermolecular force of attraction?

0%
nylon
0%
poly(vinyl chloride)
0%
cellulose
0%
natural rubber

Terelyne is a:-

0%
Copolymer
0%
Homopolymer
0%
Natural polymer
0%
Cyclic polymer

Which of the following polymers can be formed by using the following monomer unit?

0%
Nylon-6, 6
0%
Nylon-2-nylon-6
0%
Melamine polymer
0%
Nylon-6

Determine the degree of association (polymerization) for the reaction in aqueous solution
$$6HCHO\rightleftharpoons C_6H_{12}O_6$$
If observed (mean) molar mass of HCHO and $$C_6H_{12}O_6$$ is $$150$$.

0%
$$0.50$$
0%
$$0.833$$
0%
$$0.90$$
0%
$$0.96$$

Monomer used to prepare orlon is:

0%
$$CH_2 = CHCN$$
0%
$$CH_2 = CH - CI$$
0%
$$CH_2 = CHF$$
0%
$$CH_2 = CCI_2$$

Sulphur is used in the ________ of rubber.

0%
condensation
0%
vulcanization
0%
addition
0%
substitution

Sulphur is used in the vulcanization of rubber.

0%
True
0%
False

Give the likely structure of the polymer obtained in each of the following reactions. Also, tell whether these reactions are examples of chain-reaction or step-reaction polymers.