Chemistry

Polymers and Plastics

1,227 Questions

Polymers and plastics questions explore the properties, synthesis, and applications of various synthetic and natural polymers. Key topics include biodegradable plastics, vulcanization, and polymer nanocomposites. These concepts are frequently tested in science and engineering competitive exams.

Biodegradable plasticsPolymer nanocompositesVulcanization of rubberPolymer molecular weightAsphalt binders

Polymers and Plastics Questions

Multiple choice

Plastics are

  1. salts

  2. acids

  3. polymers

  4. solvents
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

 Plastic is a material consisting of any of synthetic or semi-synthetic organics that are malleable and can be molded into solid objects of diverse shapes. Plastics are typically organic polymers of high molecular mass, but they often contain other substances. They are usually synthetic, most commonly derived from petrochemicals, but many are partially natural.

Multiple choice

What is the monomeric unit of neoprene?

  1. 2-chloro-1, 3-butadiene

  2. 1, 3-butadiene

  3. 2-methyl-1, 3-butadiene

  4. 3-methyl-1, 3-pentadiene

  5. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

It is the monomer unit of natural rubber which is also called polyisoprene.

Multiple choice

Which of the following is true regarding a polymer?

  1. All polymers are macromolecules but all macromolecules are not polymers.

  2. All macromolecules are polymers but all polymers are not macromolecules.

  3. Polymers having low degree of polymerization are called high polymers.

  4. Starch and cellulose are the examples of synthetic polymers.

  5. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This is because a polymer has repeating structural units but a macromolecule may or may not have.

Multiple choice

Which of the following statements is not true?

  1. Elastomers are rubber like solids with elastic properties.

  2. Fibrous polymers involve strong intermolecular forces.

  3. Thermoplastic polymers soften on heating and harden on cooling.

  4. Thermosetting polymers are infusible due to large number of cross bonds.

  5. All statements are correct
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Right interpretation.