Alkenes electrophilic addition Markovnikov and peroxide effects and polymerization - Question Bank
1. Which of the following is a consequence of the peroxide effect?
2. The addition of H2O to but-2-ene in acidic medium yields:
3. Which type of bonding is formed between monomer units during addition polymerization?
4. The product formed by the addition of HBr to 1-phenylpropene according to Markovnikov's rule is:
5. In free radical addition of HBr to an unsymmetrical alkene, the regioselectivity is determined by:
6. The addition of Br2 to propene in the absence of peroxides yields:
7. Which of the following is a property of polythene?
8. The chain transfer step in free radical polymerization involves:
9. What is the role of peroxides in the addition of HBr to alkenes?
10. Which of the following is a characteristic of anti-Markovnikov addition?
11. The formation of a carbocation in electrophilic addition leads to:
12. The addition of HI to an unsymmetrical alkene in the presence of peroxides follows:
13. Which type of polymerization is commonly used for monomers with double bonds?
14. The product formed by the anti-Markovnikov addition of HBr to 2-methylbut-1-ene is:
15. In the electrophilic addition of HBr to an unsymmetrical alkene, the rate-determining step is:
16. The polymerization of tetrafluoroethene (CF2=CF2) yields:
17. Which of the following initiators is suitable for free radical polymerization?
18. The peroxide effect is an exception to which rule?
19. The addition of H2O to but-1-ene in acidic medium yields:
20. In the free radical polymerization of alkenes, the chain termination step can occur by:
21. The product formed by the addition of HBr to 2-methylbut-2-ene according to Markovnikov's rule is:
22. Which of the following is NOT an example of addition polymerization?
23. The reaction of an alkene with halogens in the presence of water leads to the formation of:
24. The addition of Br2 to ethene forms:
25. The addition of a symmetrical reagent like Br2 to an alkene follows which rule?
26. Polymerization of styrene (vinylbenzene) results in:
27. In the free radical addition of HBr, the chain propagation step involves:
28. Which of the following alkenes will give a mixture of products in the electrophilic addition of HBr due to the formation of a more stable carbocation?
29. The peroxide effect is a result of:
30. Which bond is broken in the pi bond of an alkene during electrophilic addition?
31. The intermediate in the free radical addition of HBr to an alkene involves the formation of:
32. The addition of water to an alkene in the presence of an acid catalyst is an example of:
33. Polymerization of vinyl chloride (chloroethene) yields:
34. Which of the following is a characteristic of addition polymerization?
35. The stability order of carbocations is:
36. The carbocation formed during the electrophilic addition of HBr to propene is:
37. The intermediate formed in the electrophilic addition of HBr to propene is a:
38. The anti-Markovnikov addition of HBr to an alkene is favored by:
39. Which of the following alkenes can undergo addition polymerization?
40. The mechanism of addition polymerization of alkenes usually involves:
41. Which catalyst is typically used in the Ziegler-Natta polymerization of alkenes?
42. In the addition polymerization of alkenes, the monomer units are joined together by:
43. Polymerization of ethene to polythene is an example of which type of polymerization?
44. Which of the following is a common initiator for free radical addition reactions of alkenes?
45. The peroxide effect in the addition of HBr to alkenes is an example of which type of addition?
46. The peroxide effect is observed with which hydrogen halide addition to alkenes?
47. When HBr is added to propene in the presence of peroxides, the major product formed is:
48. The addition of HBr to propene in the presence of organic peroxides follows which mechanism?
49. According to Markovnikov's rule, in the addition of an unsymmetrical reagent like HBr to an unsymmetrical alkene, the hydrogen atom of the reagent attaches to the carbon atom that has:
50. Which type of reaction is the addition of HBr to an alkene in the absence of peroxides?