Question # 1

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 a good leaving group

They have an electrophilic carbon and a bad leaving group

They have a nucleophilic carbon and a good leaving group

By simply reacting Grignand's reagent with water we get

Choose an answer

An alkane

Higher alkane

An alkene

An alkyne

The rate of E₁reaction depends upon

Choose an answer

The concentration of substrate

The concentration of nucleophile

THe concentration of substrate as well as nucleophile

None of the above

SN₂reactions can be best carried out with:

Choose an answer

Prl. alkyl halide

Sec. Alkyl halide

Ter. Alkyl halide

All of three

Most reactive halide towards S_N1 reaction is

Choose an answer

n-Butyl chloride

sec-Butyl chloride

tert-Butyl choride

Allyl chloride

On warming with silver powder,chloroform is converted into

Choose an answer

Acetylene

Hexachloroethane

1,1,2,2-tetrachloroethane

ethylene

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

Choose an answer

primary alcohol

Secondary alcohol

Tertiary alcohol

Aromatic alcohol

How many monochlorobutanes will be possible on chlorination of n-butane?

Choose an answer

1

2

3

5

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

Which of the following undergoes uncleophilic substitution exclusively by S_N1 mechanism?

Choose an answer

Benzyl chloride

Ethyl chloride

Chlorobenzene

Isopropyl choride

Thre rate of S_N2 reaction depends upon the

Choose an answer

Concentration of alkyl halides

Concentration of nucleophile

Concentration of alkyl halides and nucleophile

None of the above

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

Dehydrohalogenation of alkyl halides produces

Choose an answer

Alcohol

Alkane

Alkene

Alkyne

When metallic sodium in ether is heated with ethyl chloride, which alkane is formed

Choose an answer

Propane

Ethane

Iso-butane

N-butane

The reaction of an alkyl halide with RCOOAg produces

Choose an answer

Ester

Ether

Aldehyde

Ketone

The alkyl halide is converted into an alcohol by

Choose an answer

Addition

Substitution

Dehydrohalogenation

Elimination

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

Choose an answer

Two

Three

One

Four

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

Choose an answer

Nitrobenzene

Phenol

Chlorobenzene

Aniline

Reaction of Griganard's reagent with CO₂gives:

Choose an answer

Aldehyde

Pri-alcohol

Sec-alcohal

Carboxylic acid

What happens when CCl₄is treated with AgNO₃solution?

Choose an answer

NO₂will be evolved

A white ppt. of AgCl will form

CCl₄will dissolve in AgNO₃solution

Nothing will happen

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

For which mechanisms, the first step involved is the same:

Choose an answer

E₁ and E₂

E₂and SN₂

E₂ and E₁

E1 and SN₁

SN2 reaction can be best carried out with

Choose an answer

Primary alkyl halides

Secondary alkyl halides

Tertiary alkyl halides

All the three

Choose an answer

Electronphilic substitution

Electrophilic addition

Free radical substitution

Nuclephilic substitution

Dehydrohalogenation of alkyl halides give

Choose an answer

Alkanes

Alkenes

Alkynes

Alkdehyde

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

Choose an answer

Elimination bimolecular reactions involve:

Choose an answer

First order Kinetics

Third order kinetics

Zero order kinetics

Alkanes may be prepared by the reaction of alkyl halides with

Choose an answer

Alcohol

Carboxylic acid

Grignard reagents

None of these

When primary amine reacts with chloroform in ethanolic KOH, then the product is

Choose an answer

An isocyanide

An aldehyde

A cyanide

An alcohol

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

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

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