Polymerization MCQs

1. There are ___ types in which the mechanism of polymerization is divided.

(A) Five

(B) Three

(C) Two

(D) Four

2. ____ bond is a functionality of the monomer.

(A) Single

(B) Double

(C) Triple

(D) No

3. By ______ of the monomer molecules, the polymerization takes place.

(A) Addition

(B) Condensation

(C) Dissociation

(D) Self addition

4. In a chain reaction, the bi-products like methyl alcohol and water can produce.

(A) Partially True

(B) True

(C) False

5. The chain polymerization is carried out in _____ steps.

(A) Two

(B) Five

(C) Three

(D) Four

6. ____ type of polymerization mechanism is chain polymerization mechanism.

(A) Slow

(B) Very slow

(C) Rapid

(D) Moderate

7. The ______ K.cal/mole of energy is released by the conversion of pi-bond to sigma bond during the chain propagation.

(A) 10

(B) 40

(C) 20

(D) 30

8. Select which is not included in the chain polymerization mechanism.

(A) Dienes

(B) Polyester

(C) Allyl

(D) Vinyl

9. In ____ mechanisms, the additional polymerization can be carried out.

(A) Three

(B) Five

(C) Four

(D) Two

10. ___ are the initiator compounds.

(A) Stable

(B) Highly stable

(C) Unstable

(D) Partially stable

11. _______ are the good initiators for free radical chain polymerization.

(A) Hydrogen peroxide

(B) Benzoyl peroxide and hydrogen peroxide

(C) Benzoyl peroxide

(D) Neither benzoyl peroxide nor hydrogen peroxide

12. In ____ further types, the ionic mechanism is divided.

(A) Four

(B) Two

(C) Three

(D) Five

13. Cationic chain polymerization is the result of _____ of the inhibitor.

(A) Homolytic fusion

(B) Partially heterolytic fusion

(C) Partially homolytic fusion

(D) Heterolytic fusion

14. _________ produce the anion, initiates the anionic chain polymerization.

(A) Homolytic fusion of initiator

(B) Heterolytic fusion of initiator

(C) Organo-alkali compounds

(D) Inorganic compounds

15. ____ is the catalyst that is used in coordination polymerization.

(A) Ziegler-natta catalyst

(B) Vanadium pent-oxide

(C) Nitric oxide

(D) Zeonar

16. By the ____ step, polymerization takes place.

(A) Addition reaction

(B) Condensation reaction

(C) Co-ordination polymerization

(D) Anionic polymerization

17. Select the one which is not the three-step polymerization.

(A) Co-ordination polymerization

(B) Anionic chain polymerization

(C) Cationic chain polymerization

(D) Step polymerization

18. Condensation polymerization is the type of polymerization which is _____.

(A) Not exothermic

(B) Exothermic

(C) Endothermic

(D) Neither endothermic nor exothermic

19. The process of condensation polymerization is _____.

(A) Very fast

(B) Slow

(C) Fast

(D) Very slow

20. _____ like bi-products will be released by condensation polymers.

(A) Ammonia

(B) Ozone

(C) HCl

(D) Carbondioxide

21. _________ are the polymers which possess each monomer segment in regular configuration giving a definite structure.

(A) Addition polymers

(B) Condensation polymers

(C) Stereo regular polymers

(D) Regular polymers

22. Due to _____ regularity of the polymers may be structural.

(A) Both optical and geometrical isomerism

(B) Optical isomerism

(C) Geometrical isomerism

(D) Isomerism

23. _____ is produced by the polymerization of a diacid with a diol.

(A) Polyethylene

(B) Polyester

(C) Poly-methane

(D) Poly-ethane

24. _____ must be the functionality of a monomer.

(A) Two

(B) Four

(C) Two or more than two

(D) Three

25. _____ is not the molecular weight of the step polymers.

(A) Sum of the molecular weights of monomer

(B) Sum of the molecular weight of some monomers

(C) Sum of the molecular weights of monomer

(D) Sum of the water molecular weight

26. There are ____ types of methods of polymerization.

(A) Two

(B) Three

(C) Four

(D) Five

27. ______ are the emulsion droplets in which emulsion polymerization occurs, which is a type of polymerization.

(A) Micelle

(B) Emulsifier droplets

(C) Emulsifying droplets

(D) Emulsified droplets

28. In the solution of ____ and ____, a monomer is dispersed, forming the relatively large droplets of monomer.

(A) Micelle, water

(B) Surfactant, alcohol

(C) Surfactant, vinegar

(D) Surfactant, water

29. _____ is created by excess surfactant in the water.

(A) Emulsifier

(B) Monomer

(C) Emulsifying agent

(D) Micelle

30. In the water phase, a water ____ initiator is introduced.

(A) Soluble

(B) Insoluble

(C) Partially soluble

(D) Neither soluble nor insoluble

31. The monomers which undergo ______ are the monomers for which emulsion polymerization can be mainly for.

(A) Ziegler-natta polymerisation

(B) Chain radical polymerization

(C) Co-ordination polymerization

(D) Condensation polymerization

32. Select one of the following which does not synthesize by the emulsion polymerization.

(A) Teflon

(B) BUNA -S

(C) Polystyrene

(D) Polyvinyl chloride

33. ______ initiators are used in the emulsion polymerization.

(A) Per-sulphates

(B) n-hexane

(C) Dibenzyl peroxide

(D) Silica nano particles

34. Select which one of the following can be produced using suspension polymerization.

(A) Teflon

(B) Poly methyl methacrylate

(C) BUNA -S

(D) Polyethylene

35. The suspension polymerization is carried out in ___ types, depending upon the morphology of particles.

(A) Five

(B) Four

(C) Three

(D) Two

36. Select which one of the following is not used as stabilizers in the suspension polymerization.

(A) Silica nano particles

(B) Heptane

(C) n-Hexane

(D) n-isopropylacrylamidein

37. _____ heat is obtained during the process of suspension polymerization.

(A) Uncontrolled

(B) Moderate

(C) Partially controlled

(D) Controlled