Question # 1

_{Which compound is the most reactvie one:}

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benzene

ethene

ethane

ethyne

Characterstics of aromaic are:

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how hydrogen carbon ratio than alkanes

characterstics oudour

a &B

Characterstics properties

Bond angle in benzene is

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109.5°

180°

120°

107.20

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

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lsomerization

Aromatization

Dealkylation

Rearrangement

During nitration of benzene. the active nitrating agent is

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NO₃^-1

NO₂⁺

NO₂^-1

HNO₃

Benzene gives reactions generally:

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Electropholic subsitution

addition

synthesis

addition and electropholic subsitution

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

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

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four

five

six

seven

Arenes are also called

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atom

hydrocarbons

aromatic

benzene

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

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Friedel Craft's reaction

Benzene condensation

Hydroformylation

Cellemense

Benzene acid can be prepared from the oxidation of:

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benzene

ethyl benzene

benzonic acid

toluene

Benzene gives reactions generally

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electrophilic

addition substitution

synthesis

addition and electrophilic substitution

Aromatic hydrocarbons are the derivatives of:

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Normal series of parrafins

Alkene

Benzene

Cyclohexane

The electrophile in aromatic sulphonation Is

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H₂SO₄

HSO₄^-

SO₃

SO₃⁺

The electrophile in aromatic sulphontion is:

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H₂SO₄

HSO₄

SO₃

SO₃₊

Which of the following is explosive:

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Trinitropheonal

Nitropheonal

Nitromethane

Nitrobenzene

Acyiation of benzene to produce aliphatic aromatic ketones is known as

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Friedel Craft's reaction

benzenecondensation

hydroformylation

Clemmensen reduction

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 hydridization in benzene is

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sp³

sp²

sp⁴

dsp²

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 was discovered by first of all

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Michael Faraday

Hofmann

Ainderson

Sorenbon

Aroma meas:

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Fragrant

Invisible

latest affinityt

benzene

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

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four

five

six

seven

Which terms was derived from " aroma"?

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atom

hydrocarbons

aromatic

aliphatic

The hybirdization in benzene is:

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sp³

sp²

dsp²

Kekule structures contributed towards actual structure of benzene

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60%

70%

80%

90%

Bond angle in benzene is :

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109..5^o

180^o

120^o

107.2^o

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 term was derived from atomos?

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atom

hydrocarbon

aromatic

aliphatic

Simple aromatic compound is:

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benzene

toluene

aniline

phenol

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

Monosubstituted benzene can have disubstitution at position:

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Ortho

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