Question # 1

The conversion of benzene to chlorobenzene is a

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Addition reaction

Elimination reaction

Substitution reaction

Dehydration process

Which one is not electrophile

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BF3

SO3

AlCl3

NH3

The structure of Benzene is

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Hexagonal irregular

Tetrahedral

Trigonal planner

Hexagonal planner

Amongst the following, the compound that can be most readily sulphonated is

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toluene

benzene

nitrobenzene

chlorobenzene

Structure of benzene is

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Tetrahedral

Trigonal planar

Hexagonal planar

Linear

The difference of actual and theoretical heat of hydrogenation of compound is called.

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Lattice energy

Resonance energy

Ionization energy

Enthalpy of formation

Which compound is the most reactive one

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benzene

ethene

ethane

ethyne

The number of possible isomers of xylene are

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2

3

4

5

Which compound is the most reactive

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Benzene

Ethene

Ethane

Ethyne

The electrophile in Aromatic sulphonation is

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H₂SO₄

HSO₄^1-

SO₃

SO₃¹⁺

The conversation of n-hexane into benzene by heating in in the presence of Pt is called

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Isomerization

Aromatization

Dealkylation

Rearrangement

Which of the following species is ortho and para director.

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CHO

SO3H

NO2

Cl

Cyclic structure of benzene was proposed by

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Dewar

Faraday

Down

Kekule

Benzene cannot undergo

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Substitution reactions

addition reactions

oxidation reactions

elimination reactions

Benzene molecule is made up of.

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3- pi and 9 sigma bonds

6- pi and 6 sigma bonds

6 -pi and 12 sigma bonds

4 -pi and 12 sigma bonds

Which group when attached with benzene increases electron density of ring.

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-COOH

-NO

-CHO

-CH3

Among the following the compound that can be most readily suphonted is.

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Toluene

Benzene

Nitrobenzene

Chlorobenzene

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