Question # 1

The conversion of benzene to chlorobenzene is a

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Addition reaction

Elimination reaction

Substitution reaction

Dehydration process

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

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toluene

benzene

nitrobenzene

chlorobenzene

Cyclic structure of benzene was proposed by

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Dewar

Faraday

Down

Kekule

When acetylene is heated at 300 ^oC in copper tube, the product obtained is.

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Benzene

Alkyl benzene

Ether

Alcohol

The number of possible isomers of xylene are

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2

3

4

5

Aromatic compounds burns with sooty flame because.

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They have high percentage of hydrogen

The have a right structure

The have high percentage of carbon

The resist reaction with air

m-choronitro benzene is prepared by

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Nitration of chlorobenzene

Nitration of Benzene

Chlorination of Nitrobenzene

Nitration of m-chlorobenzene

The structure of Benzene is

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Hexagonal irregular

Tetrahedral

Trigonal planner

Hexagonal planner

The benzene molecule contains

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three double bonds

two double bonds

one double bond

delocalized pie-electron charge

Main source of aromatic compound is

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Petroleum

Coaltar

Living organisms

Dead marine animals

Chlorobenzene on nitration with conc. HNO3 and Conc. H2SO4 gives.

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m -chloronitrobenzene

o and p chloronitrobenzene

o and m chloronitrobenzene

mixture of O2 m and p chloronitrobenzene

Which compound form benzoic acid on oxidation with strong oxidizing agent.

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Toluene

Ethyl benzene

n propyl benzene

All

Aromatic hydrocarbons are the derivatives of

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Normal series of paraffins

Alkene

Benzene

Cyclohexane

The aromatic ring of Benzene can be hydrogenated in the presenc eof.

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Pt

Rh

Sunlight

O3

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

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-NO2

-Cl

-CH3

-OH

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

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-COOH

-NO

-CHO

-CH3

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

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