15. POLYMERS Objective
15. POLYMERS
Download 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
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 |
