Question

Cotton is a polymer made up of
A. Wool
B. Cellulose
C. Jute
D. rayon

Answer 1

Hint: A polymer is a macromolecule made of repeated chains of monomers. They have high molecular mass. Cotton is a polymer which is fluffy and soft and obtained from cotton plants. It is a breathable and absorbent polymer which contains natural fibres of cotton plants. Cotton is made up of a polymer which is a carbohydrate.

Complete answer:
A polymer is a substance which has large molecules with high molecular mass. They are also known as macromolecules as they are made up of long and repeating chains of many units of a molecule. Different polymers have different properties which depend on the type of bonding of a polymer. Some polymers may bend and stretch whereas some are tough and hard. Rubber, polyester and nylon are some examples of polymers. Monomers are the units which are repeated to form long chains to build a polymer. The process of formation of polymers by the repeated chains of monomers is known as polymerisation.
Cotton is the most common and naturally occurring polymer that we use in our day-to-day life. It is a fluffy and soft polymer which is made from natural fibres of cotton plants. Cotton obtained from the plant contains seeds. It can hold more water than their weight and are considered as breathable and absorbent fibres. It is used for making clothes, curtains, toys, fishing nets and various other products.
Cotton is a polymer which is made up of cellulose. Cellulose is a carbohydrate which is also a polymer of repeated chains of glucose.

Therefore, the correct answer is option (B). Cotton is a polymer made up of Cellulose.

Note:
Polymers are classified into various categories based on the source of obtaining a polymer, based on the structure of a polymer, based on the mode of polymerisation which tells whether a polymer is formed by addition or condensation and based on the molecular forces between the monomers.