Question 1

A chain of small chemical units combined to form a large single unit is called ____

Accepted Answer

A polymer is a large molecule, or macromolecule, composed of many repeated subunits, known as monomers. These small chemical units combine to form the larger structure of the polymer.

Question 2

Polythene and PVC are examples of

Accepted Answer

Polythene and PVC (Polyvinyl Chloride) are examples of thermoplastics, which are plastics that become pliable or moldable at a certain elevated temperature and solidify upon cooling.

Question 3

Plastics which when moulded once, cannot be softened by heating. Such plastics are called ____

Accepted Answer

B

Question 4

Polycot is made by mixing two types of fibres namely

Accepted Answer

Polycot is a blend of polyester and cotton fibers, combining the properties of both to create a versatile and durable fabric.

Question 5

The 4 R Principle is

Accepted Answer

The 4 R principle stands for Reduce, Reuse, Recycle, Recover. These are strategies for managing waste and resources more sustainably.

Question 6

_____________ is an example of natural polymer

Accepted Answer

Cellulose is a natural polymer found in the cell walls of plants. It is a complex carbohydrate that provides structural support to plant cells. Unlike rayon and nylon, which are synthetic polymers created through chemical processes, cellulose is produced naturally by plants.

Question 7

Which of the following is Non-biodegradable

Accepted Answer

Plastic bags are non-biodegradable because they are made from synthetic polymers that do not break down naturally in the environment, unlike woolen clothes, cotton cloth, and wood, which are biodegradable.

Question 8

Bakelite and Melamine are examples of

Accepted Answer

Bakelite and Melamine are examples of thermosetting plastics, which are polymers that become irreversibly hard upon heating.

Question 9

Fire proof plastic uniform worn by fire fighters has a coating of _____ to make it fire resistant.

Accepted Answer

Melamine plastic is used as a coating on fireproof plastic uniforms worn by firefighters to make them fire resistant. Melamine is known for its ability to withstand high temperatures and its flame-retardant properties.

Question 10

The coating on modern non- stick cookware and electric iron is of

Accepted Answer

The coating on modern non-stick cookware and electric irons is made of Teflon, which is a brand name for a type of polymer called polytetrafluoroethylene (PTFE) known for its non-stick properties.

Quiz 1: Plastic and Polymer Terminology