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Category: CHM203

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CHM203

1 / 50

In electrophilic addition to alkenes, the electrophilic attack is on __________

2 / 50

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.

3 / 50

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

4 / 50

Sulphonation of benzene yields ___________

5 / 50

Unbranched isomer has higher _________ than branched isomer

6 / 50

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

7 / 50

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

8 / 50

The number or π-electrons in benzene is _____________

9 / 50

The stronger an acid the ___________ is its conjugate base

10 / 50

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

11 / 50

The effect arising from the spatial interactions between the groups in a compound is called _____________

12 / 50

There are ---------- resonance structures of benzene

13 / 50

The cannonical forms of  benzene were proposed by _____________

14 / 50

Hydrogenation of benzene at higher temperature and under pressure yields ________

15 / 50

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

16 / 50

Reduction of benzene is by __________ of benzene.

17 / 50

The method of reduction of the carbonyl group of ketone produced by Friedel - craft is __________

18 / 50

An example of Isolated Benzenoid Hydrocarbon is __________

19 / 50

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

20 / 50

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

21 / 50

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 ____________

22 / 50

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

23 / 50

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

24 / 50

The backbone of an organic molecule is __________

25 / 50

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

26 / 50

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

27 / 50

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

28 / 50

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

29 / 50

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

30 / 50

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

31 / 50

A side reaction that occurs during substitution reactions of alkyl halides is _________

 

32 / 50

Fused benzenoid hydrocarbon with three benzene rings is ________

33 / 50

Naphthalene has ________ number of resonance hybrid structures

34 / 50

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

35 / 50

Inductive effect is a type of ____________ effect

36 / 50

The parent compound of polynuclear hydrocarbons is ___________

37 / 50

Fused benzenoid hydrocarbons with two benzene rings is _________

38 / 50

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

39 / 50

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

40 / 50

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

41 / 50

The dehydrohalogenation of alkyl halides yields __________

42 / 50

Down the group, electronegativity

43 / 50

The major product in the nitration of nitrobenzene is ____________

44 / 50

Oxidation of naphthalene under controlled condition yields ___________

45 / 50

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

46 / 50

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

47 / 50

Cyclohexane has _______ fewer hydrogens than nhexane.

48 / 50

Bleaching powder provides chlorine which oxidizes ethanol to _________.

49 / 50

In terms of aromatization, naphthalene has ___________ π electrons

50 / 50

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

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