Question # 1

Allyl chloride on dehydrochlorination gives

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Propadiene

Propylene

Allyl alcohol

Acetone

Organic compounds containing halogen atom are called:

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R---OH

R----X

R----NH₂

R----COH

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Electronphilic substitution

Electrophilic addition

Free radical substitution

Nuclephilic substitution

Carbon atom holding halogen in aryl halides is

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sp²-hybridesed

sp³-hybridesed

sp-hybridesed

sp³d-hybridesed

In which of the following reactions is the inorganic reagent acting as a nucleophile

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Elimination bimolecular reactions usually obey

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First order kinetics

Second order kinetics

Third order kinetics

Zero order kinetics

SN2 reaction can be best carried out with

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Primary alkyl halides

Secondary alkyl halides

Tertiary alkyl halides

All the three

Steps in SN , reactions are:

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One

Two

Three

Four

Grignard's reagent was prepared in:

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1900

1910

1920

1930

Which of the following is a nucleophile

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OH

CH(CH₃)₃

CH₃⁺

CH₃CH₂CH₃

The reactivity order of alkyl halides for a particular alkyl group is:

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F >Cl>Br>I

Cl>Br>F>l

l>Br>Cl>F

Br>l>Cl>F

When CO₂is made to react with ethyl magnesium iodide, followed by acid hydrolysis, the product formed is

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Propane

Propanoic acid

Propanal

Propanol

The reaction of an alkyl halide with RCOOAg produces

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Ester

Ether

Aldehyde

Ketone

When CO₂is made to react with ethyl megnesium iodine, followed by hydrolysis, the product formed is:

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Propane

Propanoic acid

Propanal

Propanol

Alkyle halides can be prepared by treating halogen acids with

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Ethane

Ethanol

Ethene and ethanol

Aldehyde

The reaction of 4-bromobenzyl chloride with NaCN in ethanol leads to

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4-Bromobenzyl cyanide

4-Cyanobenzyl chloride

4-Cyanobenzyle cyanide

4-Bromo 2-cyanobenzyl chloride

Elimination bimolecular reactions involve:

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First order Kinetics

Third order kinetics

Zero order kinetics

Ammonia like water also reacts with Grignard's reagent to give

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Alkane

Alkene

Alkyne

Amide

Benzene hexachloride is used as

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Dye

Antimaterial drug

Antibiotic

Insecticide

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Primary alkyl halide

Secondary alkyl halide

Tertiary alkyl halide

None of these

The final product formed by distilling ethyl alcohol with excess of Cl₂and Ca(OH)₂is

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CH₃CHO

CCl₃CHO

CHCl₃

(CH₃)₂O

Chlorobenzene on heating with aqueous NH₃under pressure in the presence of cuprous chloride gives

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Benzamide

Nitrobenzene

Aniline

Chloroaminobenzene

Grignard's reagent on treatment with carbonyl compounds yield

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Pheonol

Alcohol

Alkane

None of these

When formaldehyde is added to Grignard reagent we get

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Aldehyde

Acetone

Primary alcohol

Secondary alcohol

By simply reacting Grignand's reagent with water we get

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An alkane

Higher alkane

An alkene

An alkyne

The reactivity order of alkyl halides for a paricular alkyl group is

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Fluoride > chloride > bromide > iodide

Chloride > bromide > fluoride > iodide

Iodide > bromide > chloride > fluoride

Bromide > iodide > chloride > fluoride

Alkanes may be prepared by the reaction of alkyl halides with

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Alcohol

Carboxylic acid

Grignard reagents

None of these

Grignard's reagent on treatment with dry CO₂and HCI yields

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Ester

Alcohol

Carboxylic acid

Aldehyde

The most reactive compound for electrophilic nitration will be

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Benzyl chloride

Benzoic acid

Nitrobenzene

Chlorobenzene

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

Which of the following chlorocompounds is heat easily hydrolysed by hydorxide ion to give the product indicated

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