Haloalkane Quiz » Chemistry-Papers

Which reaction is termed as Darzen's Reaction--

ROH + HCl

ROH + SOCl2

ROH + PCl3

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

SN-2 reaction will be fastest in:

CH3-Cl

CH3-Br

CH3CH2-Cl

The reactivity order of alkyl halides depends upon:

Nature of alkyl group only

Nature of both alkyl group and a halogen atom

Nature of halogen atom only

Which is most reactive for SN2 reactions?

CH3-Br

C2H5-I

C3H7-I

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

HI > HBr > HCl > HF

HBr > HCl > HI > HF

HF > HBr > HCl > Hl

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

1,2 -dichloroethane

1'1, -dichloroethane

Ethylidene chloride

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

Ethane

Nitroethane

Ethyl nitrite

For SN-1 reaction, preferred solvent will be -

Benzene

Toluene

Water

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

Alcohol

Ester

Ether

Chlorobenzene is -

Less reactive than benzyl chloride

More reactive than ethyl bromide

As reactive as methyl chloride

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

3∘ > 2∘ > 1∘

None of these

3∘ < 2∘ < 1∘

In Finkelstein Reaction, which reactants are used

NaI + acetone

KI + ethanol

NaI + ethanol

Chlorobenzene can be obtained from benzene diazonium chloride by-

Fittig reaction.

Gattermann's reaction

Wurtz reaction

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

NaCl

HCl + ZnCl2

SOCl2

C6H5Cl is prepared by aniline with

HNO2 and then heated with Cu2Cl2

both

Cu2Cl2 + HCl

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

HNO2

Cu/HCl

CuCl/HCl

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

Borodine reaction

Hofmann reaction

Borodine - Hunsdiecker reaction

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

Hunsdiecker

Wurtz

Swart Rxn

An alkyl halide is insoluble in water because-

Alkyl halide is non polar & H2O is polar

None of these

Alkyl halide does not form hydrogen bond with water

Ethylidene chloride is a/an______.

gem-dihalide

vic-dihalide

vinylic halide

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

Vinyl chloride

Allyl chloride

Ethyl chloride

C2H5Cl on heating with alcoholic KOH will produce

C2H2

C2H5-OH

C2H4

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

Free radical

Carbocation

Carbanion

Which chloride is the most reactive towards aqueous NaOH in -

Benzyl chloride

Chlorobenzene

Methyl chloride

Which of the following statement is correct -

All are correct

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

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

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

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

methylbenzene

No reaction

n-Propylbenzene

Which would be least reactive towards bromine?

Nitrobenzene

Anisole