CHM203

1. Branched chain hydrocarbons have lower __________ than their straight chain isomers.

2. The substitution of an acyl group into an aromatic ring by the reaction with an acid chloride in the presence of Lewis acid is called ____________

3. Solubility of branched isomers is __________ than that of straight chain isomers

4. Cyclohexane has _______ fewer hydrogens than nhexane.

5. Naphthalene has ________ number of resonance hybrid structures

6. The cannonical forms of  benzene were proposed by _____________

7. There are ---------- resonance structures of benzene

8. Two factors that affect the boiling point of a substance are ________ and _________

9. The process by which benzene and its derivatives are extracted from petroleum is called ___________

10. Another name for methyl benzene is __________

11. Fused benzenoid hydrocarbons with two benzene rings is _________

12. Fused benzenoid hydrocarbon with three benzene rings is ________

13. A change in molecular structure which affect the reactivity of the molecule by changing the electron distribution is called __________

14. The E2 reactions of alkyl halides are favoured by the use of __________

15. The most widely used method for the preparation of alkyl halides is from __________

16. For halogen derivatives of aromatic compounds, boiling point ---------- with increase in atomic size of the halogen atom.

17. The method of reduction of the carbonyl group of ketone produced by Friedel -crafts acylation is ------------ reduction.

18. In terms of aromatization, naphthalene has ___________ π electrons

19. The stronger an acid the ___________ is its conjugate base

20. Tautomers which differ from each other only in the location of a hydrogen atom and a double bond are called ____________

21. The backbone of an organic molecule is __________

22. In keto-enol tautomers, the tautomer that predominates is __________

23. In terms of steric effect _________ geometric isomer is more stable.

24. The definition of an acid as a proton donor was given by ________

25. Down the group, electronegativity

26. Unbranched isomer has higher _________ than branched isomer

27. The reaction in which aryl halides are formed from aromatic amines is called _________

28. A benzenoid hydrocarbon in which two benzene rings are fused together at the ortho position is called ____________

29. The benzenoid hydrocarbons in which two or more benzene rings are fused together at ortho position in such a way that each pair of rings shares rings shares two carbons are called ---------- benzenoid hydrocarbon.

30. The rule that states that in a dehydrohalogenation reaction of alkyl halides, the major product will be the product that has the more alkyl groups attached to the resultant carbon - carbon double bond is __________ rule.

31. The amount of substance dissolved in a certain amount of solvent is referred to as ___________

32. The extent to which acids transfer a proton to a standard base determines __________

33. In terms of steric effect,  conformational isomer is __________ more stable.

34. The type of tautomerism which involves a shift in interatomic distance within a molecule, without the separation of any atom from the rest of the molecule , as an intermediate stage is called ____________

35. The dehydrohalogenation of alkyl halides yields __________

36. The types of geometric isomers are trans and __________

37. Hydrogen no - bond resonance is otherwise called _____________

38. The major product in the nitration of nitrobenzene is ____________

39. Oxidation of naphthalene under controlled condition yields ___________

40. In terms of steric effect _________ geometric isomer is more stable.

41. An example of Isolated Benzenoid Hydrocarbon is __________

42. Bleaching powder provides chlorine which oxidizes ethanol to _________.

43. Hydrogenation of benzene at higher temperature and under pressure yields ________

44. Reduction of benzene is by __________ of benzene.

45. The influence of the inductive effect on acid strength is almost negligible after the __________ carbon in the chain.

46. Inductive effect is a type of ____________ effect

47. The number or π-electrons in benzene is _____________

48. The presence of an aromatic ring in a compound is detected by ____________

49. Reduction of benzene using Nickel at 425-525K and 25atm yields __________

50. Sulphonation of benzene yields ___________