Question # 1

Grignard's reagent on treatment with chloramine give

Choose an answer

Acetamide

Primary amice

Secondary amice

Urea

What is the total number of different chloroethanes, formula C₂H_6-nCl_n, where n can be any integer from 1 to 4

Choose an answer

4

6

7

8

Reduction of alkyl halides give

Choose an answer

Alkanes

Alkenes

Ketones

Ether

Benzene hexachloride is used as

Choose an answer

Dye

Antimaterial drug

Antibiotic

Insecticide

Which reaction is example of nucleophilic substitution

Choose an answer

Grignard reagent is prepared by the reaction of magnesium metal with alkyl halide in the presence of

Choose an answer

Alcohol

Water

Suephuric acid

Dry ether

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

Choose an answer

They have an electrophilic carbon

They have an electrophilic carbon and good living gorup

They have an electrophilic carbon and bad living group

They have an nucleophilic carbon and good living gorup

When an alcohol reacts with SOCI₂an alkyl halide is formed. What are two other products

Choose an answer

SO₂and HCI

SI₂and H₂O

HCI and H₂O

H₂S and HCI

SN₂reaction has order of reaction :

Choose an answer

First

Second

Third

Zero

Iodoethane reacts with sodium in ether, the product formed is

Choose an answer

Pentene

Propyne

Butene

Butane

Which of the following does not give iodoform test?

Choose an answer

Ethanol

Ethanal

Acetophenone

Bezophenone

Any other aldehyde except formaldehyde on reaction with Grignard's will produce

Choose an answer

Secondary alcohol

Primary alcohol

Tertiary alcohol

Aromatic alcohol

The compounds or species in search of electrons are called

Choose an answer

Elctrophiles

Nucleophile

Nitrities

Bases

Which of the following alkyl halides is used as a mathylating agent

Choose an answer

CH₂H₅l

CH₃l

C₂H₅Pr

C₂H₅Cl

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

Choose an answer

4-Bromobenzyl cyanide

4-Cyanobenzyl chloride

4-Cyanobenzyle cyanide

4-Bromo 2-cyanobenzyl chloride

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

Choose an answer

CHF Cl C FCl

CH Cl CF₂Cl

CHF CF₂Cl

C FCl CF₂Cl

1, 3-Dibromopropane reacts with metallic zinc to form

Choose an answer

Propene

Propane

Cyclopropane

Hexane

Hydrolysis of Grignard's reagent gives:

Choose an answer

Alkane

Alkyl

Halide

Alcohol

Grignard's reagent on treatment with carbonyl compounds yield

Choose an answer

Pheonol

Alcohol

Alkane

None of these

Catalyst in the reaction ROH + SOCl₂-------> RCL+SO₂+HCl is:

Choose an answer

ZnCl₂

Pyridine

H₂SO₄

Either

Alkanes may be prepared by the reaction of alkyl halides with

Choose an answer

Alcohol

Carboxylic acid

Grignard reagents

None of these

To get DDT, chlorobenzene has to react with one of the following compound in the presence of conc.H₂SO₄

Choose an answer

Trichloroethane

Dichloroacetone

Dichloroacetaldehyde

Trichloroacetealdehyde

What is the total number of different chloroethanes of formula C₂H_6-nCl_npossible (n may be 1 to 6)

Choose an answer

6

8

9

10

Alkyl halides react with lithium dialkyl copper reagents to give

Choose an answer

Alkenes

Alkyl copper halides

Alkanes

Alkenyl halides

Tetrabromoethane on treatment with alcoholic zinc gives

Choose an answer

Ethylbromide

Ethane

Ethene

Ethyne

Which responds to +ve iodoform test?

Choose an answer

Butanol-1

Butan-1-al

Butanol-2

2-pentanone

The alkyl halide is converted into an alcohol by

Choose an answer

Addition

Substitution

Dehydrohalogenation

Elimination

The order of reactivity for a given halogen in Grignard's reagent is:

Choose an answer

CH₃X > C₂H₅X > C₃H₄X > C₄H₄X

C₂H₅X > C₃H₇X > C₄H₅X > CH₄X

C₃H₇X > C₄H₇X > CH₃X > C₂H₅X

C₄H₄X > C₃H₇X > C₂H₅X > CH₄X

The order of reactivity of an alkyl halide (R-X) for a particular alkyl group is

Choose an answer

Iodide > bromide > chloride

Chloride > bromide > iodide

Bromide > chloride > iodide

Bromide > iodide > chloride

When carbon dioxide is passed through the R - Mg - X is produced

Choose an answer

Any carboxylic acid

Propanoic acid

Propanedioic acid

None of these

Replacement of Cl of Chlorobenzene to give phenol requires drastic conditions but chlorine of 2, 4-Dinitrochlorobenzene is readily replaced because

Choose an answer

NO₂makes the electron rich ring at ortho and para positions

NO₂withdraws electrons at metaposition

NO₂donate electrons at m-position

NO₂withdraws electrons at ortho and para position

More Classes

Other Links

ECAT Chemistry Chapter 21 Alkyl Halides Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer