MCQs - Set III - Alkyl halides

     

Alkyl Halides

(1)   Ethyl bromide on reaction with AgCN gives:-

a.      Ethane nitrile

b.     Ethyl carbylamine

c.      Methane nitrile

d.     Methyl isocyanide

(2)   When Chloromethane underdoes Wurtz reaction, the major product is :-

a.      Methane

b.     Ethane

c.      Propane

d.     Butane

(3)   Chlorobenzene on reaction with sodium hydroxide at high temperature and pressure, gives:-

a.      Sodium phenoxide

b.     Phenol

c.      Benzene

d.     Benzoic acid

(4)   When chlorobenzene reacts with chloral in presence of Conc. H₂SO₄, the major product is:-

a.      Benzene hexachloride

b.     Phenol

c.      DDT

d.     Phenolphthalein

(5)   Nitration of chlorobenzene gives:-

a.      m-Nitrochlorobenzene

b.     p- Nitrochlorobenzene

c.      Nitrobenzene

d.     Aniline

(6)   Methyl amine reacts with chloroform in presence of alcoholic KOH to give:-

a.      Methyl isocyanide

b.     Methyl cyanide

c.      Ethyl carbylamine

d.     Ethyl cyanide

(7)   Chloroform is stored in dark bottles filled upto the brim to prevent the oxidation of chloroform to give:-

a.      Carbon tetra chloride

b.     Phosgene

c.      Methylene dichloride

d.     Chloropicrin

(8)   Propene on reaction with HCl in presence of peroxides gives:-

a.      2-Chloropropane

b.     1-Chloropropane

c.      Propane

d.     1,2-Dichlorpropane

(9)   Which of the following compounds will not give a positive Iodoform test:-

a.      Ethyl alcohol

b.     Ethanoic acid

c.      Ethanal

d.     Propanone

(10)    Ethyl chloride when heated with sodium in presence of dry ether gives:-

Identify the product ‘C’ in the following reaction:-

a.      Formic acid

b.     Methyl amine

c.      Chloromethane

d.     Ethanoic acid

(11)       When methyl bromide reacts with magnesium in presence of dry ether,the product obtained is:-

a.      Lucas reagent

b.     Hinsberg reagent

c.      Grignard reagent

d.     Tollen’s reagent

(12)       Alkaline hydrolysis of Chloroform with aq KOH gives:-

a.      Methyl alcohol

b.     Acetaldehyde

c.      Potassium formate

d.     Dichloromethane

(13)       Nitration of chloroform gives a poisonous gas called:-

a.      Phosgene

b.     Chloropicrin

c.      Mustard gas

d.     Carbon monoxide

(14)       Acetone reacts with chloroform to give a hypnotic liquid called:-

a.      Chloretone

b.     Chloral

c.      Iodoform

d.     Chloropicrin

(15)       Ethyl bromide reacts with Sodium ethoxide to give:-

a.      Ethoxy ethane

b.     Methoxy ethane

c.      Butane

d.     Butanone

(16)       Sodium acetylide reacts with Methyl chloride to give :-

a.      2-Butene

b.     1-Butene

c.      2-Butyne

d.     1-Butyne

(17)       An alkyl halide contains 65% bromine. On reaction with aq. KOH it gives an alcohol which gives positive Iodoform test. The alkyl halide is:-

a.      Ethyl bromide

b.     2- Bromopropane

c.      2-Bromobutane

d.     1-Bromopropane

(18)       Which of the following compounds react with alkyl halides to gives nitroalkanes:-

a.      Sodium nitrite

b.     Silver nitrite

c.      Conc. Nitric

d.     Nitrating mixture

(19)       2-Chlorobutane on reaction with alcoholic KOH gives:-

a.      1-Butanol

b.     2-Butanol

c.      2-Butene

d.     1-Butene

(20)       Alkyl halides undergo:-

a.      Electrophilic addition

b.     Nucleophilic substitution

c.      Nucleophilic addition

d.     Electrophilic substitution