Polymer Technology MCQs

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1.Identify the incorrect statement from the following options:

Denier refers to the mass in grams of 9000 meters of a fiber, whereas tex represents the mass in grams of 1000 meters of fiber.Crimp quantifies the difference in length between a fiber when it is straightened and when it is in its natural wavy form.Dacron, acrylic, viscose rayon, and cellulose acetate fibers are all produced using the wet spinning method.Nylon fibers absorb more water compared to polyester fibers.

2.Identify the incorrect statement from the following:

Polystyrene is classified as a thermoplastic polymer.Proteins belong to the category of natural polymers.Neoprene is derived from natural rubber.Polythene is a copolymer, whereas SBR is a homopolymer.

3.Identify the incorrect statement from the following options:

Polymers composed of a single type of monomer are known as homopolymers.Polymers formed from multiple types of monomers are referred to as copolymers or mixed polymers.Vulcanized rubber exhibits greater elasticity compared to natural rubber.The intermolecular forces in thermoplastic polymers fall between those found in elastomers and fibers.

4.Identify the incorrect statement from the following options:

Chain growth polymerization typically produces addition polymers.Step growth polymerization is commonly responsible for forming condensation polymers.Teflon is synthesized through step growth polymerization.Bakelite is created by means of step growth polymerization.

5.Identify the incorrect statement from the following:

Polymeric fibers are never formed through addition polymerization.Uncured rubber shows the characteristic of stickiness.Thermoplastic polymers do not display a distinct melting point.Polyethylene typically offers strong resistance to ultraviolet light.

6.Identify the incorrect statement from the following:

Linear polymers are produced solely from bifunctional groups and are typically thermoplastic.Cross-linked branched polymers can be either elastomers or thermosetting materials.Impurities in bifunctional monomers cause branching in cross-linked polymers, which decreases solubility and raises the softening temperature.Polyesters are formed by the reaction of dibasic acids with dihydric alcohols through addition polymerization.

20.During the production of Polycaprolactam (Nylon-6) via condensation polymerization of caprolactam at 240-280°C, approximately what percentage of caprolactam is converted?

Half of the caprolactamThree-quarters of the caprolactamNinety percent of the caprolactamAlmost complete conversion at ninety-nine percentNone of the above

Polymer Technology MCQs

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1.Identify the incorrect statement from the following options:

2.Identify the incorrect statement from the following:

3.Identify the incorrect statement from the following options:

4.Identify the incorrect statement from the following options:

5.Identify the incorrect statement from the following:

6.Identify the incorrect statement from the following:

7.Identify the incorrect statement from the following options:

8.What is another name for Buna-S?

9.Identify the option that is not formed by the polymerization of two different monomers.

10.For which of the following applications is thermocol (expanded polystyrene) unsuitable?

11.Which agent is most frequently used for the vulcanization of rubber?

12.Which material is commonly used to manufacture liners for bags?

13.Which of the following is classified as an addition polymer?

14.Identify the material that is classified as an elastomer from the list below.

15.Which molding technique is commonly used to manufacture plastic tubes and pipes?

16.What is the purpose of adding diphenylamine to rubber?

17.What is the typical temperature (in °C) maintained during the emulsion polymerization process for producing PVC?

18.Which type of moulding process is commonly used to manufacture plastic products?

19.Which catalyst is employed in the low-pressure Ziegler process for producing polyethylene?

20.During the production of Polycaprolactam (Nylon-6) via condensation polymerization of caprolactam at 240-280°C, approximately what percentage of caprolactam is converted?

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