Haloalkane Quiz » Chemistry-Papers

C2H5Cl on heating with alcoholic KOH will produce

C2H5-OH

C2H4

C2H2

The reactivity order of alkyl halides depends upon:

Nature of halogen atom only

Nature of both alkyl group and a halogen atom

Nature of alkyl group only

The reaction of silver carboxylates with bromine dissolved in carbon tetrachloride is called -

Borodine - Hunsdiecker reaction

Hofmann reaction

Borodine reaction

Chlorobenzene is -

More reactive than ethyl bromide

Less reactive than benzyl chloride

As reactive as methyl chloride

The ease of dehydrohalogenation of alkyl halides with alcoholic KOH is:

3∘ < 2∘ < 1∘

3∘ > 2∘ > 1∘

None of these

In Finkelstein Reaction, which reactants are used

KI + ethanol

NaI + acetone

NaI + ethanol

Ethylidene chloride is a/an______.

vic-dihalide

vinylic halide

gem-dihalide

Fluorobenzene is prepared by treating benzene diazonium chloride with fluoroboric acid and heating the product obtained. This reaction is known as:

Sandmeyer reaction

Schiemann reaction

Gattermann reaction

Which reagent cannot be used to prepare an alkyl halide from an alcohol?

HCl + ZnCl2

SOCl2

NaCl

The Reagent used in the gattermann reaction for the preparation of aryl halide

HNO2

CuCl/HCl

Cu/HCl

Which chloride is the most reactive towards aqueous NaOH in -

Methyl chloride

Benzyl chloride

Chlorobenzene

Chlorobenzene can be obtained from benzene diazonium chloride by-

Fittig reaction.

Wurtz reaction

Gattermann's reaction

SN-2 reaction will be fastest in:

CH3CH2-Cl

CH3-Cl

CH3-Br

When ethyl bromide is treated with moist Ag2O the product is -

Ethyl ether

Ethanol

Ethoxy ethane

For SN-1 reaction, preferred solvent will be -

Water

Benzene

Toluene

Benzene reacts with methyl chloride in the presence of anhydrous AlCl3 to give

n-Propylbenzene

methylbenzene

No reaction

Which is most reactive for SN2 reactions?

C2H5-I

C3H7-I

CH3-Br

What would be the major product when Ethyl bromide reacts with silver nitrite

Ethyl nitrite

Nitroethane

Ethane

Which would be least reactive towards bromine?

Nitrobenzene

Anisole

Chlorobenzene

C6H5Cl is prepared by aniline with

both

HNO2 and then heated with Cu2Cl2

Cu2Cl2 + HCl

A strong solution of alcoholic alkali will preferentially promote alkyl halide into an alkene by -

Addition

Substitution

Elimination

In SN 1 reaction, the first step involves the formation of -

Carbocation

Carbanion

Free radical

Decreasing order of reactivity of HX in the reaction ROH + HX  RX + H2O--------

HI > HBr > HCl > HF

HF > HBr > HCl > Hl

HBr > HCl > HI > HF

Which of the following is an example of vic-dihalide?

1'1, -dichloroethane

1,2 -dichloroethane

Ethylidene chloride

When an alkyl halide reacts with an alkoxide, the product is-

Ester

Alcohol

Ether

C2H5Cl + AgF ------- C2H5 F + AgCl The above reaction is called -

Hunsdiecker

Swart Rxn

Wurtz

An alkyl halide is insoluble in water because-

Alkyl halide does not form hydrogen bond with water

None of these

Alkyl halide is non polar & H2O is polar

Which of the following statement is correct -

The stability order of alkyl halides is RF > RCl > RBr >RI

Decreasing order of density of alkyl halides is RI > RBr > RCI > RF

Among isomeric alkyl halides the decrease in boiling point 1º > 2º > 3º

All are correct

The alkyl halide that can not give a white precipitate with an alcoholic AgNO3 solution is:

Allyl chloride

Ethyl chloride

Vinyl chloride

Which reaction is termed as Darzen's Reaction--

ROH + SOCl2

ROH + HCl

ROH + PCl3