Which of the following organic compounds polymerizes to form the polyester Dacron?

Terepthalic acid and ethylene glycol

Propylene and para H O - C 6 H 4 - O H

Benzoic acid and para H O - C 6 H 4 - O H

The two monomers for the synthesis of nylon 6 , 6 are

HOOC CH 2 4 COOH , H 2 N CH 2 6 NH 2

HOOH CH 2 4 COOH , H 2 N CH 2 4 NH 2

HOOC CH 2 6 COOH , H 2 N CH 2 4 NH 2

HOOC CH 2 6 COOH , H 2 N CH 2 6 NH 2

Poly- β -hydroxybutyrate-co- β -hydroxyvalerate P H B V is a copolymer of _____.

3 - hydroxybutanoic acid and 4 - hydroxypentanoic acid

3 - hydroxybutanoic acid and 2 - hydroxypentanoic acid

The monomers used in preparation of dextron are

Hexamethylenediamine and adipic acid

E M B I B E

Achieve CUET (UG) Chemistry Practice Book>Chapter 15 - Polymers>Exercise>Q 41

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The chemical formula of monomer of PAN is

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Important Points to Remember in Chapter 15 - Polymers from Embibe Experts Achieve CUET (UG) Chemistry Practice Book Solutions

1. Classification of Polymers:

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2. Types of Polymerisation Reactions:

There are two broad types of polymerisation reactions, i.e., the addition or chain growth polymerisation and condensation or step growth polymerisation.

3. Natural rubber:

Rubber is a natural polymer and possesses elastic properties. It is also termed as elastomeric polymer. In elastomeric polymers, the polymer chains are held together by the weak intermolecular forces.

4. Synthetic rubbers:

Neoprene, Buna-S and Buna-N are examples of synthetic rubbers.

5. Biodegradable Polymers:

(i) Poly $β$ -hydroxybutyrate – co- $β$ -hydroxy valerate (PHBV): It is obtained by the copolymerisation of $3$ -hydroxybutanoic acid and $3$ - hydroxypentanoic acid.

(ii) Nylon $2$ –nylon- $6$ : It is an alternating polyamide copolymer of glycine and amino caproic acid and is biodegradable.