Question # 1

Which reaction sequence would be best to prepare 3-chloro-aniline from benzene?

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Chlorination, nitration, reducing

Nitration, chlorination, reducition

Nitration, reduction,chlorination

Nitration, reduction, acylation, chlorination, hydrolysis

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

An alkane is produced when an alkyle halide reacts with zinc in the presence of

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HCl

CH₃COOH

Both a & b

None

The major reaction occurring in the engines of automobiles is

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Oxidation

Reducing

Combustion

Decomposition

The three alternate single and double bonds in the benzene ring are called

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Conjugate bonds

Resonating bonds

Both A and B

None of above

Alkanes are soluble in all except

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Benzene

Ether

Water

Carbon tetra chloride

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4-methyl pentene

2-methyle-1-butene

2-methyl propane

None of the above

Which of the following is not an electrophitic substitution reaction of benzene

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Nitration

Sulphonation

Fridel-Craft alkylation

Free radical chlorination of benzene

The benzene molecule contains

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Three double bonds

Two double bonds

One double bonds

Delocalizedπ-electron charge

Introduction of a second methyl group in methylbenzene will give how many isomeric dimethyllenzenes

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2

1

3

4

The C-C bond angles in benzene ring are

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119°

120°

121°

None

The next homologue of C₁₀H₂₂will be

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C₉H₂₀

C₁₂H₂₆

C₁₁H₂₄

C₁₃H₂₈

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

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Polybenzene

Polyalcohol

Polypropylene

Polyethylene

Reaction of ethanes with KMnO₄gives:

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Ozonide

Glyoxal

Glycol

Oxalic acid

A salt producing hydrocarbon among these compounds is

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Ehyne

Ethene

Methane

Ethane

Synthesis of rubber is made by polymerization of

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Chloroform

Acetylene

Divinylacetylene

Butene

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

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Saturation

Unsaturation

Substitution

None of above

During reaction of O₂and alkenes, a product:

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Glycol

Epxide

Halohydrin

Ethylene glycol

Toluene is also called

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Hydroxyl benzene

Methyl benzene

ethyl benzene

None

Ethylene combines with water in the presence of H₂SO₄+ HgSO₄and forms

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Ethyle chloride

Ethyle alcohol

Carboxylic acid

None of these

Benzene can be obtained by heating either benzoic acid with X or phenol with Y. X and Y are respectively

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Zinc dust and soda lime

Soda time and zinc dust

Zinc dust and sodium hydroxide

Soda lime and copper

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

B-B'-dichloroethyl sulphide is commonly known as

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Mustard gas

Laughing gas

Phosgene gas

Bio gas

Free radical mechanism of halogenation of alkanes follow step:

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Initiation

Propagation

Termination

All of these

During nitration of benzene, the active nitrating agent is

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NO3

NO2+

NO2-

HNO3

Aromatic hydrocarbons are the derivatives of

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Normal series of paraffins

Alkene

Benzene

Cyclohexane

Benzene is obtained by fractional distillation of

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Heavy oil

Anthracene oil

Middle oil

Light oil

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

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Saturation

Unsaturation

Subsitution

None

Substitution of halogen in the benzene ring requires catalyst

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AlCl₃

FeCl₃

SiO₂

Organo - nickel

Alkanes containing carbon C₁₈ownwards are

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Gases

Liquids

Waxy solids

Solids

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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