Polymers MCQs

Polymers are large molecules created by linking numerous small molecules, known as monomers, into long chains. These monomers chemically bond to form extended structures, which can be linear, branched, or form three-dimensional networks. Polymers can be categorized as either amorphous or crystalline, though they often exhibit characteristics of both. Crystalline polymers are more accurately described as semicrystalline, since their densities can differ from those of ideal crystalline materials.

Which of the following is a branched polymer?

(a) low density polymer
(b) polyester
(c) high density polymer
(d) nylon

(a) low density polymer

On the basis of mode of formation, polymers can be classified:

(a) as addition polymers only
(b) as condensation polymers only
(c) as copolymers
(d) as addition and condensation polymers

(d) as addition and condensation polymers

Nylon threads are made of

(a) polyester polymer
(b) polyamide polymer
(c) polyethylene polymer
(d) polyvinyl polymer

(b) polyamide polymer

Which of the following does not undergo additional polymerization?

(a) vinyl chloride
(b) butadiene
(c) styrene
(d) all of the above undergo addition polymerizations

(d) all of the above undergo addition polymerizations

In addition polymer, the monomer used is

(a) unsaturated compounds
(b) saturated compounds
(c) bifunctional saturated compounds
(d) trifunctional saturated compounds

(a) unsaturated compounds

Which of the following statements is not correct for fibres?

(a) Fibres possess high tensile strength and high modulus
(b) Fibres impart crystalline nature
(c) Characteristic features of fibres are due to strong intermolecular forces like hydrogen bonding
(d) All are correct

(d) All are correct

The polymer used in making synthetic hair wigs is made up of

(a) CH2=CHCl
(b) CH2=CHCOOCH3
(c) C6H5CH=CH2
(d) CH2=CH-CH=CH2

(a) CH2=CHCl

Polymer formation from monomer starts by

(a) the condensation reaction between monomers
(b) the coordinate reaction between monomers
(c) conversion of monomer to monomer ions by protons
(d) hydrolysis of monomers

(a) the condensation reaction between monomers

Which of the following monomers form biodegradable polymers?

(a) 3-hydroxybutanoic acid + 3-hydroxypentanoic acid
(b) Glycine + amino caproic acid
(c) ethylene glycol + phthalic acid
(d) both (a) and (b)

(d) both (a) and (b)

The process of heat softening, moulding, and cooling to rigidness can be repeated for which plastics?

(a) thermoplastics
(b) thermosetting plastics
(c) both (a) and (b)
(d) neither (a) nor (b)

(a) thermoplastics