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Daily Practice Problems
Class 12 Chemistry
Polymers
daily practice problem

Question1.

Name the process and the name of product when interaction of ethylene glycol and terephthalic acid takes place (a) Copolymerization, Benzene -1,4 – dicarboxlic acid and ethane 1,2-diol

(b) Step Growth polymerization , Terylene

(c) Vulcanization , Dacron

(d) Chain growth polymerization, Teflon

Question2.

When a Cyclohexanoxime is treated with H2SO4 compound “A” is formed on Heating “A” with H2O at high temperature it forms compound “B”. Identify A and B.

Question3.

Which of the following is a natural polymer?

(a) cis-1,4-polyisoprene

(b) poly (Butadiene-styrene)

(c) polybutadiene

(d) poly (Butadiene-acrylonitrile)

Question4.

On oxidizing Methanol it gives compound “A” which further reacts with Heterocyclic Aromatic amine Forms a compound “B” which is used for the manufacture of synthetic polymer. Identify the Compound A and B.

Question5.

Novolac is a polymer obtain by condensing –

(a) formaldehyde and Melamine

(b)phenol and Formaldehyde

(c) melamine and Formaldehyde

(d) styrene and 1,3- Butadiene

Question6.

Ziegler – Natta Catalyst is used in the preparation of –

(a) low density polythene

(b) high density polythene  

(c) teflon

(d)  polyacrylonitrile

Question7.

Which of the following polymer of glucose is stored by animals?

(a) Cellulose

(b)  Amylase

(c) Amylopectin

(d) Glycogen

Question8.

Vulcanisation of rubber makes –

(a) more elastic

(b) soluble in inorganic solvent

(c) more Stiff

(d)a and c both

Question9.

Regarding cross-linking or network polymers, which of the following statements is incorrect?

(a) They contain strong covalent bonds in their polymer chains.

(b) They contain covalent bonds between various linear polymer chains.

(c) Example are bakelite and melamine.

(d) They are formed from bi-and tri-functional monomers.

Question10.

Name the substances which inhibit free radical polymerization.

Question11.

On complete hydrogenation, natural rubber produces:

(a) Ethylene-propylene copolymer

(b) Vulcanised rubber

(c) Polypropylene

(d) Polybutylene

Question12.

What are plasticizers?

Question13.

Give structure and preparation method for Nylon 6 and Nylon 6,6.

Question14.

Name the compound which is biodegradable in nature and used in orthopaedic devices.

Question15.

Name one thermosetting and one thermoplastic polymer.

Question16.

Give monomeric units of –

(a) PVC

(b) Terylene

(c)  PAN

(d) Bakelite

Question17.

Which of the following polymer can be used for lubrication and as an insulator?

(a) SBR

(b) PVC

(c) PTFE

(d) PAN

Question18.

Which polymer is known as Gutta percha? Give its structural Formula.

Question19.

Write the equation for synthesis of glyptal.

Question20.

Match the material given with the polymer.

(a) Natural rubber                         -           Nylon

(b) Wood laminates                       -           Neoprene

(c) Ropes and Fibres                      -           Dacron

(d) Polyester fabric                         -           Melamine-Formaldehyde resins

(e) Synthetic rubber                      -           Urea-Formaldehyde

(f) Unbreakable crockery            -           cis-Polyisoprene                                 

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