Question # 1

The next homologue of C₁₀H₂₂will be

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C₉H₂₀

C₁₂H₂₆

C₁₁H₂₄

C₁₃H₂₈

Benzene reacts with ozone and gives

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Glycerin

Glyoxal

Maleic anhydride

Benzoic acid

Kolb's method is not useful for the production of

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Methane

Ethane

Propane

Butane

Incomplete oxidation of alkanes yields

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CO₂& carbon black

CO₂+ heat

CO and carbon black

CO + heat

Preparation of ethylbenzene by the reaction of bromobenzene, ethylbromide and sodium is called

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Wurtz reaction

Fitting reaction

Wurtz fitting reaction

None of these

The sp²hybird orbitals are oriented in space at one angle

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180°

109.5°

100°

120°

Which of the following method is most appropriate for the manufacture of methane?

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By reduction of CH2CL2

Wurtz reaction

Liquification of natural gas

None of these

Synthetic rubber is made by polymerization of

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Chloroform

Acetylene

Divinlacetylene

Butene

Odour of alkene is:

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Fruity

Odourless

Zarlic like

Irritating

A fuel has the same knocking property as a mixture of 70 isooctane (2, 2, 4- trimethyl pentane) and 30% n-heptane by volume the octane number of the fuel is

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100

70

50

40

Which one of following is not monocyclic aromatic hydrocarbon

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Benzaldehyde

Benzoic acid

Benzene sulfonic acid

Biphenyl

Alkyl halides when reduced with nascent hydrogen in the presence of Zn + HCI, are converted to

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Alkynes

Alkenes

Alkanes

Alcohol

The method in which alkanes prepared by alkyle halides in the presence of palladium - charcoal is

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Hydrolysis

Electrolysis

Hydrogenation

Hydrogenolysis

The alkynides are used for the ----------- of alkynes

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Pxperation

Purification

Seperation

All of above

Which one of the following is (m-xylene)

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1,2 dimethyl benzene

1,3 dimethyl benzene

1,5 dimethyl benzene

1,4 dimethyl benzene

When methane reacts with Cl₂in the presence of diffused light the products obtained are?

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Chloroform only

Carbon tetrachloride only

Chloromethane and dichloromethane

Mixture of a,b,c

Which reaction is too vigorous to control

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Chlorination

Bromination

Iodination

Fluorination

The compound prepared by a substitution reaction of benzene is

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Acetophenone

Glyoxal

Cyclohexame

Hexabromo cyclohexane

Alkanes are least reactive towards:

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Acids and bases

Reducing agents

Oxidizing agents

All of these

The nitration of benzene takes place when it is heated with a mixture of conc.HNO₃and conc. H₂SO₄at 50°C in ratio of

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1 : 2

1 : 1

1 : 3

2 : 1

Which is liquid among the following alkenes?

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Ethane

Propene

Butene

Pentene

The general formula of alkane is

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C_nH_2n+2

C_nH_n

C_nH_2n

C₂H_2n-1

Ethylene polymerizes at 100 atm pressure and 400°C to give

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Polybenzene

Polyalcohol

Polypropylene

Polyethylene

The C-C bond angles in benzene ring are

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119°

120°

121°

None

How many molecules of chlorine adds in benzene in the presence of sunlight

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One

Two

Three

Four

Preparation of vegetable ghee involves

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Halogenations

Hydrogenations

Hydroxylation

Dehydrogenations

The elimination of HX from adjacent carbon atoms is called

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Halogenations

Hydrohalogenation

Dehydrohalogenation

Hydration

During the preparation of alkanes the hydrogenation of alkenes or alkynes the catalyst may be

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H₂SO₄

Ni

Fe₂O₃

Al₂O₃

Alkene general formula :

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C_nH_2n+2

C_nH_2n

C_nH_2n-2

C_nH_2n+1

When acetylene is passed through a copper tube at 300°C, it polymerizes to

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Polyacetylene

polyethylene

Benzene

None of these

Which is the used as test for the presence of alkenes

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Reaction of cold dilute alkaline KMnO₄

Combustion

Polymerization

Catalytic hydrogenation

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