15. POLYMERS Objective

15. POLYMERS


1. Bakelite is an example of –

(A) elastomer
(B) fibre
(c) thermoplastic
(D) thermosetting

Answer тЗТ (D)


2. Arrange the following polymers is an increasin order of intermolecular forces; fibre, plastic, elastomer-

(A) Elastomer < Fibre < plastic
(B) Elastomer < Plastic < Fibre
(C) Plastic < Elastomer < Fibre
(D) Fibre < Elastomer < Plastic

Answer тЗТ (B)


3. The correct structure of monomers of buna-S is

The correct structure of monomers of buna-S is

Ans. (C)

Answer тЗТ (C)


4. The S in buna-S refers to

(A) Sulphur
(B) Styrene
(C) Sodium
(D) Salicylate

Answer тЗТ (B)


5. Identify the type of polymer

(i) – A – A – A – A – A – A –
(ii) – A – B – B – A – A – A – B – A –

(A) (i) Homopolymer, (ii) Copolymer
(B) (i) Natural polymer, (ii) Synthetic polymer
(C) (i) Linear polymer, (ii) Branched polymer
(D) (i) Fibre, (ii) Elastomer

Answer тЗТ (A)


6. Which of the following are thermoplastic polymers ?

(A) Polythene, urea-formaldehyde, polyvinyls
(B) Bakelite, polythene, polystyrene
(C) Polythene, polystyrene, polyvinyls
(D) Urea-formaldehyde, polystyrene, bakelite

Answer тЗТ (C)


7. Nylon 6, 6 is obtained by condensation polymerisation of

(A) adipic acid and ethylene glycol
(B) adipic acid and hexamethylenediamine
(C) terephthalic acid and ethylene glycol
(D) adipic acid and phenol

Answer тЗТ (B)


8. Natural rubber is a polymer of

(A) 1, 1-dimethylbutadiene
(B) 2-methyl-1, 3-butadiene
(C) 2-chlorobuta-1, 3-diene
(D) 2-chlorobut-2-ene

Answer тЗТ (B)


9. Dacron is an example of

(A) polyamides
(B) polypropenes
(C) polyacrylnitrile
(D) polyesters

Answer тЗТ (D)


10. Composition of Ziegler-Natta catalyst is

(A) (Et3)3Al.Ticl2
(B) (Me)3Al.TiCl2
(C) (Et)3Al.TiCl4
(D) (Et)3Al.PtCl4

Answer тЗТ (C)


11. Which of the following is a homopolymer ?

(A) Bakelite
(B) Nylon 6,6
(C) Neoprene
(D) Buna-S

Answer тЗТ (C)


12. Polymer which has amide linkage is

(A) nylon-6, 6
(B) terylene
(C) teflon
(D) bakelite

Answer тЗТ (A)


13. In vuclanization of rubber

(A) sulphur reacts to form a new compound
(B) sulphur cross-links are introduced
(C) sulphur forms a very thin protective layer over rubber
(D) All statements are correct

Answer тЗТ (B)


14. Novolac on heating with formaldehyde undergoes ……… to form an infusible solid mass called ………

(A) polymerisation, melamine
(B) vulcanisation, resin
(C) cross-linking, bakelite
(D) condensation, polystyrene

Answer тЗТ (C)


15. Synthetic biopolymer, PHBV is made up of the following monomers

(A) 3-hydroxybutanoic acid + 3-hydroxypentanoic acid
(B) 2-hydroxybutanoic acid + 2-hydroxypentanoic acid
(C) 3-chlorobutanoic acid + 3-chloropentanoic acid
(D) 2-chlorobutanoic acid + 3-methylpentanoic acid

Answer тЗТ (A)


16. Which of the following is a biodegradable synthetic polymer ?

(A) Aliphatic polyesters
(B) PHBV
(C) Nylon-2-nylon-6
(D) All of these

Answer тЗТ (D)


17. Which of the following polymers of glycose is stored by animals ?

(A) Cellulose
(B) Amylose
(C) Amylopectin
(D) Glycogen

Answer тЗТ (D)


18. The commercial name of polyacrylonitrile is

(A) dacron
(B) orlon (acrilan)
(C) PVC
(D) bakelite

Answer тЗТ (B)


19. Which of the following polymers are used as fibre ?

(A) Nylon
(B) Polytetrafluoroethane
(C) Terylene
(D) Buna-S

Answer тЗТ (A)


20. Sweetest of all sugars is

(A) Glucose
(B) Lactose
(C) Sucrose
(D) Fructose

Answer тЗТ (C)


21. Glucose is

(A) Triose
(B) Tetrose
(C) Fentose
(D) Hexose

Answer тЗТ (D)


22. Which vitamin deficiency causes night blindness ?

(A) Vitamin A
(B) Vitamin B
(C) Vitamin C
(D) Vitamin D

Answer тЗТ (A)


Class 12th Chemistry Objective Question English

S.N CHEMISTRY OBJECTIVE English Medium
1 SOLID STATE┬а
2 SOLUTION
3 ELECTROCHEMISTRY
4 CHEMICAL KINETICS
5 SURFACE CHEMISTRY
6 GENERAL PRINCIPLES & PROCESSES OF ISOLATION OF ELEMENTS
7 THE P-BLOCK ELEMENTS
8 THE D- AND f-BLOCK ELEMENTS
9 CO-ORDINATION COMPOUNDS
10 HALOALKANES AND HALOARENES
11 ALCOHOLS, PHENOLS AND ETHERS
12 ALDEHYDES, KETONES AND CARBOXYLIC ACIDS
13 AMINES
14 BIOMOLECULES
15 POLYMERS
16 CHEMISTRY IN EVERYDAY LIFE
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