15. POLYMERS Objective

15. POLYMERS


1. Bakelite is an example of –

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

Answer ⇒ (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 ⇒ (B)


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

The correct structure of monomers of buna-S is

Ans. (C)

Answer ⇒ (C)


4. The S in buna-S refers to

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

Answer ⇒ (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 ⇒ (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 ⇒ (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 ⇒ (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 ⇒ (B)


9. Dacron is an example of

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

Answer ⇒ (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 ⇒ (C)


11. Which of the following is a homopolymer ?

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

Answer ⇒ (C)


12. Polymer which has amide linkage is

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

Answer ⇒ (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 ⇒ (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 ⇒ (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 ⇒ (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 ⇒ (D)


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

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

Answer ⇒ (D)


18. The commercial name of polyacrylonitrile is

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

Answer ⇒ (B)


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

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

Answer ⇒ (A)


20. Sweetest of all sugars is

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

Answer ⇒ (C)


21. Glucose is

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

Answer ⇒ (D)


22. Which vitamin deficiency causes night blindness ?

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

Answer ⇒ (A)


Class 12th Chemistry Objective Question English

S.N CHEMISTRY OBJECTIVE English Medium
1 SOLID STATE 
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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