Question # 1

Which is the property of benzene:

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Decolourizes KMnO₄

straight chain structure

only double bond is present

triple and double bond

The benzene molecule contains

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Three double bond

Two double bond

One double bond

Delocalized pie electron charge

Benzene acid can be prepared from the oxidation of:

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benzene

ethyl benzene

benzonic acid

toluene

Ozonolysis of benzene gives:

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Nitration

sulphonation

ozonide

glyoxal

Which is the property of benzene?

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decolourizes KMnO₄

straight chain structure

only double bond is present

triple and double bond

Which of the following is explosive?

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Trinitrophenol

Nitrophenol

Nitromethane

Nitrobenzene

Monosubstituted benzene can have disubstitution at position

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ortho

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They have high percentage of hydrogen

They have a ring structure

They have high percentage of carbon

They resist reaction with air

The hybirdization in benzene is:

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sp³

sp²

dsp²

Which of the following is explosive:

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Trinitropheonal

Nitropheonal

Nitromethane

Nitrobenzene

The conversion of n-hexane into benzene by heating in the presence of CO, is called

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lsomerization

Aromatization

Dealkylation

Rearrangement

Monosubstituted benzene can have disubstitution at position:

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Ortho

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Micheal Faraday

Hofmann

Ainderson

Sorenbon

empirical formula mass of benzene is time lesser than moleculer formula mass:

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four

five

six

seven

The hydridization in benzene is

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sp³

sp²

sp⁴

dsp²

Ozonolysis of benzene gives

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nitration

sulphonation

ozonide

glyoxal

Kekule structures contributed towards actual structure of benzene

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60%

70%

80%

90%

Aromatic compounds burn with sooty flame cause:

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They have high percentage of hydrogan

They have ring structure

They have high percentage of carbon

They resist reaction with air

Among the following, poly cyclic compound is

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styrene

cumene

naphthalene

xylene

Aromatic hydrocarbons are derivatives of

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normal series of paraffins

alkene

benzene

cyclohexane

Characterstics of aromaic are:

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how hydrogen carbon ratio than alkanes

characterstics oudour

a &B

Characterstics properties

Arenes are also called

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atom

hydrocarbons

aromatic

benzene

Bond angle in benzene is :

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109..5^o

180^o

120^o

107.2^o

Aroma meas:

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Fragrant

Invisible

latest affinityt

benzene

Ratio of carbon to hydrogen in aromatic compounds is:

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Low than alkanes

High than alkanes

Low than alkanes not high than alkanes

High than alkanes

Benzene gives reactions generally:

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Electropholic subsitution

addition

synthesis

addition and electropholic subsitution

Benzene cannot undergo:

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Substitutions reactions

Addition reactions

Oxidation reactions

Elimination reactions

The electrophile in aromatic sulphonation Is

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H₂SO₄

HSO₄^-

SO₃

SO₃⁺

During nitration of benzene, the active nitrating agent is:

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NO₃^-1

NO₂₊

NO₂^-1

HNO₃

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

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Toluene

Benzene

nitrobenzene

chlorobenzene

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