Question # 1

Benzene was discovered by first of all:

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Micheal Faraday

Hofmann

Ainderson

Sorenbon

Aroma meas:

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Fragrant

Invisible

latest affinityt

benzene

Acylation of benzene to produce aliphatic aromatic ketones is known as:

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Friedel Craft's reaction

Benzene condensation

Hydroformylation

Cellemense

Aromatic compounds burn with sooty flame cause

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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

Simple aromatic compound is:

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benzene

toluene

aniline

phenol

Benzene was discovered by first of all

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Michael Faraday

Hofmann

Ainderson

Sorenbon

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

The conversion of n-hexane into benzene by heating in the presence of Cr₂O_{3 is called:}

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Isomerization

Aromatization

Dealkylation

Rearrangment

Benzene acid can be prepared from the oxidation of:

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benzene

ethyl benzene

benzonic acid

toluene

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

Among the following, poly cyclic compound is:

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styrene

cumene

napthalene

xylene

During nitration of benzene. the active nitrating agent is

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NO₃^-1

NO₂⁺

NO₂^-1

HNO₃

Ozonolysis of benzene gives

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nitration

sulphonation

ozonide

glyoxal

Benzene gives reactions generally:

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Electropholic subsitution

addition

synthesis

addition and electropholic subsitution

Which of the following is explosive:

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Trinitropheonal

Nitropheonal

Nitromethane

Nitrobenzene

Benzene cannot undergo

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substitution reactions

addition reactions

oxidation reactions

elimination reactions

Kekule structures contributed towards actual structure of benzene

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60%

70%

80%

90%

The hybirdization in benzene is:

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sp³

sp²

dsp²

Which of the following acid can be used as a catalyst in Friedel Craft's reaction?

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AlCl₃

HNO₃

BeCl₂

NaCl

Which of the following acid can be used as a catalyst in Friedel craft's reaction

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AlCl³

HNO₃

BeCl₂

NaCl

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

Which terms was derived from " aroma"?

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atom

hydrocarbons

aromatic

aliphatic

The benzene molecule contains

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Three double bond

Two double bond

One double bond

Delocalized pie electron charge

Which compound is the most reactive one?

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benzene

ethene

ethane

ethyne

The electrophile in aromatic sulphontion is:

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H₂SO₄

HSO₄

SO₃

SO₃₊

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

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four

five

six

seven

Ratio of carbon to hydrogen in aromatic compounds is

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Low than alkanes

High than alkanes

Low than alkenes not high than alkanes

High than high than alkenes

Ozonolysis of benzene gives:

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Nitration

sulphonation

ozonide

glyoxal

Bond angle in benzene is :

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109..5^o

180^o

120^o

107.2^o

Benzoic acid can be prepared from the oxidation of

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benzene

ethyl benzene

benzoic acid

toluene

Acyiation of benzene to produce aliphatic aromatic ketones is known as

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Friedel Craft's reaction

benzenecondensation

hydroformylation

Clemmensen reduction

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