Polymers

Polymers
Class:XII / Unit:15

1. Caprolactam is the monomer of

Nylon-6,6,
Nylon-6
Buna-N
Buna-S

2. Nylon threads are made of

Polyvinyl polymer
Polyethylene polymer
Polyester polymer
Polyamide polymer

3. Which of the following is a branched polymer

Low density polymer
Polyester
High density polymer
Nylon

4. In addition polymer, monomer used is

Trifunctional saturated compounds
Bifunctional saturated compounds
Saturated Compounds
Unsaturated Compounds

5. Which of the following statements is not correct for fibres

Fibres possess high tensile strength and high modulus
Fibres impart crystalline nature
Characteristic features of fibres are due to strong intermolecular forces like hydrogen bonding
All are correct

6. Which of the following does not undergo additional polymerization

Vinyl chloride
Butadiene
Styrene
all of the above undergoes addition polymerizations

7. Which property that polyacetylene exhibits is unusual for an organic polymer

Solubility
Electrical conductivity
Flexibility
High boiling point

8. Which polymer among the following polymers does not soften on heating

PVC
Bakelite
Polythene
Polystyrene

9. The two monomers used in the preparation of dextron are

Lactic acid and glycolic acid
ε-aminocaproic acid and glycine
Isobutylene and isoprene
3-hydroxy butanoic acid and 3-hydroxy pentanoic acid

10. Which is an example of thermosetting polymer

Bakelite
Polythene
Neoprene
PVC