Question # 1

The reaction of alcohol with SOCI₂in the presence of pyridine as catalyst gives

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Acids

Acid chloride

Alkyl halide

Benzene

The alkyl halide molecule on which a nucleophile attacks is called

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Substrate

Subsituent

Substituted

All of these

Alkyl halides react with Mg in dry ether to form

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Magnesium halide

Grignard's reagent

Alkene

Alkyne

Which of the following compounds gives trichoromethane on distilling with bleaching power?

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Methanal

Phenol

Ethanol

methanol

Which one of the following will have the maximum dipole moment

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CH₃F

CH₃Cl

CH₃Br

CH₃l

Action of Zn with alkyl halides in the presence of an inert solvent forms higher alkanes. This reaction is known as

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Wurtz reaction

Frankland's reaction

Cannizaro reaction

Kalobe's reaction

Alkyl halides are considered to be very reactive compounds towards nucleophiles because

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They have an electrophilic carbon

They have an electrophilic carbon and a good leaving group

They have an electrophilic carbon and a bad leaving group

They have a nucleophilic carbon and a good leaving group

C₆H₆Cl₆can be obtained from

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HCl and Benzene

Cl₂and Benzene and AlCl₃

Cl₂and Benzene in diffused light

NaOCl and Benzene

When formaldehyde is added to Grignard reagent we get

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Aldehyde

Acetone

Primary alcohol

Secondary alcohol

Alkanes may be prepared by the reaction of alkyl halides with

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Alcohol

Carboxylic acid

Grignard reagents

None of these

Alkyl halides on treatment with aqueous KOH give

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Phenol

Alcohol

Aldehyde

Ketone

Alkyl halides in which a halogen atom is bonded to that carbon atom which directly bonded with one hydrogen atom is called

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Primary alkyl halides

Secondary alkyl halides

Tertiary alkyl halides

Quaternary alkyl halides

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Primary alkyl halide

Secondary alkyl halide

Tertiary alkyl halide

None of these

S_N1 reaction of alkylhalides leads to

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Retention of configuration

Recemisation

Inversion of configuration

None of these

Which of the following reacts with chloroform and base to form phenyl isocynaide?

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Nitrobenzene

Phenol

Chlorobenzene

Aniline

Gammexane is

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Chlorobenzene

Benzyl chloride

Brommobenzene

Benzene hexachloride

When alkyl halide is heated with aqueous solution of ammonia at 100°C the major product is

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Primary amine

Secondary amine

Tertiary amine

Mixture of amines and salt

For the carbylamine reaction we need hot alc.KOH and

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Any amin and chloroform

Chloroform and Ag powder

A primary amine and chloroform

A mono alkyl amine and trichlorom-ethane

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Electrophilic addition

Electrophilic substitution

Free radical substitution

Nuclophilic addition

Which reaction is example of nucleophilic substitution

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Cyanoform is ________ acid in nature than the chloroform. The missing word is

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Stronger

Weaker

Amphoteric

Neutral

Which one of the following is not a nuclelphile

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H₂O

H₂S

BF₃

NH₃

In primary alkyl halides, the halogen atom is attached to a carbon which attached to how many carbon atoms?

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Two

Three

One

Four

1-Chlorobutane on reaction with alcoholic potash gives

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But 1-ene

Butan-1-ol

But-2-ene

Butan-2-ol

Hydrolysis of Grignard's reagent yields

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Alcohol

Aldyhyde

Ester

Alkane

Tetrabromoethane on treatment with alcoholic zinc gives

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Ethylbromide

Ethane

Ethene

Ethyne

CFCs undergo homolytic fission by uv light in the stratosphere which radical could result from this irradiations of CHCICF₂Cl.

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CHF Cl C FCl

CH Cl CF₂Cl

CHF CF₂Cl

C FCl CF₂Cl

Grignad reagent is reactive due to

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The presence of halogen atom

The presence of Mg atom

The polarity of C - Mg bond

None of above

Best medhod of preparation of alkyl halide from alcohals is by its reaction with:

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HX

SOCl₂

Px₅ and PX₃

All

If ketone reacts with Grignard's reagent, it also produces alcohol, But it will be a

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primary alcohol

Secondary alcohol

Tertiary alcohol

Aromatic alcohol

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2-bromo-3-methylbutane

3-methyl-2-bromobutane

2-methyl-3-bromobutane

All of these

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