Question # 1

Benzene in the presence of AICl3 produces acetophenone when reacts with

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AcetyI chloride

EthyI benzene

Acetic acid

Ethanoic acic

C-H bond length in the benzene is

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0.99A°

1.09A°

1.12A°

1.34A°

The pi-electrons in the styrene are

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13

10

8

6

Ethane when completely halogenated in excess of chiorine can form

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Hexachloroethane

Dichloroethane

Pentachloroethane

1.1.2.2-terachloroethane

Benzene cannot undergo the ------- directly

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Substitution reaction

Addition reaction

Oxidation reaction

Elimination reaction

2,5-dimethyl-1-hexene has

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Two sp2 hybridized carbons

Six sp2 hybrid carbons

Two double bonds

Four pi electrons

Glyoxal molecule has?

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two carbonyl groups

One aldehydic and one carbonyl group

Two aldehydic groups

Two carboxyl group

Hydration of ethene is an example of

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Electrophilic addition

Electrophilic substitution

Nucleophilic addition

Nucleophilic substitution

Tertiary alcohols are the easiest to dehydrate because

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They form stable carbocation

They have less hydrogen

They have bigger size

They are polar

Ethene can give all of the following reactions except

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Addition

Free radical substitution

Hydrohalogenation

Hydration

Which of the following tests helps to distinguish between alkyne and alkene?

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Lucas test

Tollen's reagent test

Baeyer's test

Fehling's solution test

Addition of unsymmetrical reagent to an unsymmetrical alkene is governed by

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Cannizzaro's Reaction

Aldol Condensation

Kirchhoff Rule

Markownikov's Rule

The reaction that generates an ionic bond is

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Halogenation of ethene

polymerization of ethene

Hydrogenation of ethyne

Reaction of ethyne withs sodamide

The addition of HCI to ethene gives?

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Chloroethane

1,2-dichloroethane

1.1-dichloroethane

2-chloroethane

2-Propenol, on rearrangement, yields

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Propanal

Propanone

2-propano

Both A and B

Baever's reagent is misture of

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HCI& ZnCl

Ageous bromine

Alkaline KMn4

Mix of Br2&KMnO4

Ethyl and methyl groups are equidistant in a chain, the preference is given to?

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Ethyl

methyl

both ethyl and methyl

methyl mostly

Which af the following compound reacts slower than benzene in the electrophilic substitution.

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Phenol

Nitrobenzene

Toluene

Aniline

The heat of hydrogenation of most of the alkene is about

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120 kJ/mol

100 kJ/mol

140 kJ/mol

105 kJ/mol

Ethylene polymerizes at 100 atm pressure and 400 °C to give

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Polybenzene

Polypropylene

Polyalcohol

Polyethylene

Acetylide can give back ethyne upon treatment with

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water

strong base

dil. Acid

weak base

The reaction of alkyl halide in the presence of alcoholic KOH is

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Substitution

Addition

Acid-base

Elimination

Benzene reacts with Ethyl chloride in presence of AICls to give

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Benzalchloride

Benzyl chloride

Ethyl benzene

Benzotrichloride

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MDCAT Chemistry Chapter 13 Fundamental principles of organic chemistry Online Test MCQs With Answers

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