Question # 1

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

The hybirdization in benzene is:

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sp³

sp²

dsp²

During nitration of benzene, the active nitrating agent is:

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NO₃^-1

NO₂₊

NO₂^-1

HNO₃

Arenes are also called

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atom

hydrocarbons

aromatic

benzene

Benzene cannot undergo:

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Substitutions reactions

Addition reactions

Oxidation reactions

Elimination reactions

Simplest aromatic compound is

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bezene

toluene

aniline

phenol

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

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toluene

benzene

nitrobenzene

chlorobenzene

Benzene gives reactions generally

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electrophilic

addition substitution

synthesis

addition and electrophilic substitution

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

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Friedel Craft's reaction

Benzene condensation

Hydroformylation

Cellemense

Bond angle in benzene is

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109.5°

180°

120°

107.20

Benzene was discovered by first of all:

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Micheal Faraday

Hofmann

Ainderson

Sorenbon

Which compound is the most reactive one?

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benzene

ethene

ethane

ethyne

Resonance energy of benzene is (in KJ mol^-1)

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120

150

170

180

Bond angle in benzene is :

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109..5^o

180^o

120^o

107.2^o

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

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four

five

six

seven

Empirical formula mass of benzene is times lesser than molecular formula mass

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four

five

six

seven

The hydridization in benzene is

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sp³

sp²

sp⁴

dsp²

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

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

Resonance energy of benzene is (in KJ mol^-1):

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120

150

170

180

Benzene gives reactions generally:

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Electropholic subsitution

addition

synthesis

addition and electropholic subsitution

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

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lsomerization

Aromatization

Dealkylation

Rearrangement

Aromatic hydrocarbons are the derivatives of:

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Normal series of parrafins

Alkene

Benzene

Cyclohexane

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

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four

five

six

seven

Which term was derived from "aroma":

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Atom

Hydrocarbons

aromatic

aliphatic

Which is the property of benzene?

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decolourizes KMnO₄

straight chain structure

only double bond is present

triple and double bond

Aroma meas:

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Fragrant

Invisible

latest affinityt

benzene

Benzene gives reactions generally:

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Electropholic subsitution

addition

synthesis

addition and electropholic subsitution

The electrophile in aromatic sulphonation Is

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H₂SO₄

HSO₄^-

SO₃

SO₃⁺

Ozonolysis of benzene gives:

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Nitration

sulphonation

ozonide

glyoxal

Which terms was derived from " aroma"?

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atom

hydrocarbons

aromatic

aliphatic

The electrophile in aromatic sulphontion is:

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H₂SO₄

HSO₄

SO₃

SO₃₊

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