Question # 1

The structure of Benzene is

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Hexagonal irregular

Tetrahedral

Trigonal planner

Hexagonal planner

Phenol when distilled with zinc dust gives.

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Toluene

Benzaldehyde

Benzoic acid

Benzene

Which of the following species is ortho and para director.

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CHO

SO3H

NO2

Cl

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

During Nitration of Benzene the active nitrating agent is

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NO₃

NO₂⁺

NO₂

HNO₃

Aromatic hydrocarbons are the derivatives of

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Normal series of paraffins

Alkene

Benzene

Cyclohexane

Which one of the following species is meta director if present at benzene ring.

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-NO2

-Cl

-CH3

-OH

Benzene can not undergo.

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Substitution reactions

Addition reactions

Oxidation reactions

Elimination reactions

Benzene cannot undergo

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Substitution reactions

addition reactions

oxidation reactions

elimination reactions

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

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-COOH

-NO

-CHO

-CH3

Biphenyl is

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Monocyclic aromatic compound

Polyclic aromatic compound

Polycyclic fused ring compound

Alicyclic compound

The benzene molecule contains.

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Three double bonds

Two double bonds

One double bonds

Delocalized sigma electron charge

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