Question # 1

Benzene gives reactions generally:

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Electropholic subsitution

addition

synthesis

addition and electropholic subsitution

Empirical formula mass of benzene is times lesser than molecular 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 alkanes not high than alkanes

High than alkanes

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

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120

150

170

180

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

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120

150

170

180

During nitration of benzene. the active nitrating agent is

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NO₃^-1

NO₂⁺

NO₂^-1

HNO₃

Which term was derived from "aroma":

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Atom

Hydrocarbons

aromatic

aliphatic

Simple aromatic compound is:

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benzene

toluene

aniline

phenol

Bond angle in benzene is

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109.5°

180°

120°

107.20

Benzene acid can be prepared from the oxidation of:

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benzene

ethyl benzene

benzonic acid

toluene

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 electrophile in aromatic sulphontion is:

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H₂SO₄

HSO₄

SO₃

SO₃₊

Which term was derived from atomos?

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atom

hydrocarbon

aromatic

aliphatic

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

Benzene was discovered by first of all:

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Micheal Faraday

Hofmann

Ainderson

Sorenbon

Characterstics of aromaic are:

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how hydrogen carbon ratio than alkanes

characterstics oudour

a &B

Characterstics properties

The electrophile in aromatic sulphonation Is

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H₂SO₄

HSO₄^-

SO₃

SO₃⁺

Aromatic hydrocarbons are derivatives of

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normal series of paraffins

alkene

benzene

cyclohexane

Which is the property of benzene:

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Decolourizes KMnO₄

straight chain structure

only double bond is present

triple and double bond

Benzene cannot undergo

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substitution reactions

addition reactions

oxidation reactions

elimination reactions

The hybirdization in benzene is:

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sp³

sp²

dsp²

_{Which compound is the most reactvie one:}

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benzene

ethene

ethane

ethyne

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

Benzene reacts with Cl, in sunlight to give the end product

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C₆H₆Cl₆

C₆H₆Cl

O - C₆H₄Cl₂

P-C₆H₄Cl₂

Benzene gives reactions generally

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electrophilic

addition substitution

synthesis

addition and electrophilic substitution

During nitration of benzene, the active nitrating agent is:

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NO₃^-1

NO₂₊

NO₂^-1

HNO₃

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

Benzene cannot undergo:

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Substitutions reactions

Addition reactions

Oxidation reactions

Elimination reactions

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