Question # 1

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

Ethylene can be prepared in the laboratory by heating together ethyl alcohol and

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HCI

Phenol

HF

H₂SO₄

Synthesis of rubber is made by polymerization of

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Chloroform

Acetylene

Divinylacetylene

Butene

Alkanes are soluble in all except

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Benzene

Ether

Water

Carbon tetra chloride

acetylene can be converted into-while passing through a Cu-tube at 300°C:

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Glyoxal

Vinyl acetylene

Vinyl alcohol

Benzene

Write the name of following compound

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5 - methyle - 2- hexene

2 - methyle hexene

4 - ethyle - 2 - methyle hexene

3 - ethyle - 3 - methyl hexene

The presence of a double bond in a compound is the sign of

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Saturation

Unsaturation

Substitution

None of above

When sodium benzoate is treated with soda lime (NaOH) benzene is formed. What is the other product

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Na₂CO₃

NaHCO₃

Ca(OH)₂

CaCO₃

Benzene is obtained from benzene sulphonic acid by treating with

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HCl

NaOH

H₂O

NaHCO₃

Alkanes containing carbon C₁₈ownwards are

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Gases

Liquids

Waxy solids

Solids

Which of the following is not an ortho-para directing group

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Which of the following is not aromatic hydrogencarbon

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Benzene

Naphthalene

Toluene

Cyclohexene

To differentiate isomers we use

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n-

iso-

neo

All of them

Alkyne is :

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CH_3-CH₃

CH₄

CH₂₌CH₂

C₂H₂

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

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H₂SO₄

Ni

Fe₂O₃

Al₂O₃

Preparation of vegetable ghee involves:

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Halogenation

Hydrogenation

Hydroxylation

Dehydrogenation

The elimination of HX from adjacent carbon atoms is called

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Halogenations

Hydrohalogenation

Dehydrohalogenation

Hydration

Which of the following possesses the highest melting point?

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Chlorobenzene

0-Dichlorobenzene

m-Dichlorobenzene

p-Dichlorobenzene

Which of the following acid can be used as a catalyst in Friedal Craft's reactions

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AlCl₃

HNO₃

BeCl₂

NaCl

Hydrocarbon which is liquid at room temperature is

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Pentane

Butane

Propane

Ethane

Which of the following species participate in sulphonation of benzene ring?

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H2SO4

HSO4

SO3

SO^-₂

All are ortho & Para directing except

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X

OH

NR₃

NH₂

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ECAT Chemistry Chapter 19 Aliphatic Hydrocarbons Online Test MCQs With Answers

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