Question

important question related with haloalkanes and haloarenes 12

Answer 1

Multiple Choice Questions (Type-I)

The order of reactivity of following alcohols with halogen acids is ___________.


Which of the following alcohols will yield the corresponding alkyl chloride on reaction with concentrated HCl at room temperature?


Identify the compound Y in the following reaction.


Toluene reacts with a halogen in the presence of iron (III) chloride giving ortho and para halo compounds. The reaction is

(i) Electrophilic elimination reaction

(ii) Electrophilic substitution reaction

(iii) Free radical addition reaction

(iv) Nucleophilic substitution reaction

Which of the following is halogen exchange reaction?


Which reagent will you use for the following reaction ?


(i) Cl2/UV light

(ii) NaCl + H2SO4

(iii) Cl2 gas in dark

(iv) Cl2 gas in the presence of iron in dark

Arrange the following compounds in the increasing order of their densities.


Arrange the following compounds in increasing order of their boiling points


In which of the following molecules carbon atom marked with asterisk (*) is asymmetric?


(i) (a), (b), (c), (d)

(ii) (a), (b), (c)

(iii) (b), (c), (d)

(iv) (a), (c), (d)

Which of the following structures is enantiomeric with the molecule (A) given below :



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

(i) Dichloromethane

(ii) 1,2-dichloroethane

(iii) Ethylidene chloride

(iv) Allyl chloride

The position of –Br in the compound in CH3CH == CHC (Br)(CH3)2 can be classified as ____________.

(i) Allyl

(ii) Aryl

(iii) Vinyl

(iv) Secondary

Chlorobenzene is formed by reaction of chlorine with benzene in the presence of AlCl3. Which of the following species attacks the benzene ring in this reaction ?

(i) Cl–

(ii) Cl+

(iii) AlCl3

(iv) [AlCl4]–

Ethylidene chloride is a/an ______________.

(i) vic-dihalide

(ii) gem-dihalide

(iii) allylic halide

(iv) vinylic halide

What is ‘A’ in the following reaction?



A primary alkyl halide would prefer to undergo _____________.

(i) SN1 reaction

(ii) SN2 reaction

(iii) α–Elimination

(iv) Racemisation

Which of the following alkyl halides will undergo SN1 reaction most readily?

(i) (CH3)3C—F

(ii) (CH3)3C—Cl

(iii) (CH3)3C—Br

(iv) (CH3)3C—I



(i) 1-Bromo-2-ethylpropane

(ii) 1-Bromo-2-ethyl-2-methyl ethane

(iii) 1-Bromo-2-methylbutane

(iv) 2-Methyl-1-bromobutane

What should be the correct IUPAC name for diethyl bromomethane?

(i) 1-Bromo-1,1-diethoxyethane

(ii) 3-Bromopentane

(iii) 1-Bromo-1-ethyl propane

(iv) 1-Bromopentane

The reaction of toluene with chlorine in the presence of iron and in the absence of light yields ____________.


Chloromethane on treatment with excess of ammonia yields mainly


Molecules whose mirror image is non superimposable over them are known as chiral. Which of the following molecules is chiral in nature?

(i) 2-Bromobutane

(ii) 1-Bromobutane

(iii) 2-Bromopropane

(iv) 2-Bromopropan-2-ol

Reaction of C6H5CH2Br with aqueous sodium hydroxide follows ____________.

(i) SN1 mechanism

(ii) SN2 mechanism

(iii) Any of the above two depending upon the temperature of reaction

(iv) Saytzeff rule

Which of the carbon atoms present in the molecule given below are asymmetric


(i) a, b, c, d

(ii) b, c

(iii) a, d

(iv) a, b, c

Which of the following compounds will give racemic mixture on nucleophilic substitution by OH–ion?

(i) (a)

(ii) (a), (b), (c)

(iii) (b), (c)

(iv) (a), (c)

Note : In the questions 26 to 29 arrange the compounds in increasing order of rate of reaction towards nucleophilic substitution



(i) (a) < (b) < (c)

(ii) (c) < (b) < (a)

(iii) (a) < (c) < (b)

(iv) (c) < (a) < (b)



(i) (a) < (b) < (c)

(ii) (a) < (c) < (b)

(iii) (c) < (b) < (a)

(iv) (b) < (c) < (a)



(i) (c) < (b) < (a)

(ii) (b) < (c) < (a)

(iii) (a) < (c) < (b)

(iv) (a) < (b) < (c)



(i) (a) < (b) < (c)

(ii) (b) < (a) < (c)

(iii) (c) < (b) < (a)

(iv) (a) < (c) < (b)

Which is the correct increasing order of boiling points of the following compounds?
1-Iodobutane, 1-Bromobutane, 1-Chlorobutane, Butane

(i) Butane < 1-Chlorobutane < 1-Bromobutane < 1-Iodobutane

(ii) 1-Iodobutane < 1-Bromobutane < 1-Chlorobutane < Butane

(iii) Butane < 1-Iodobutane < 1-Bromobutane < 1-Chlorobutane

(iv) Butane < 1-Chlorobutane < 1-Iodobutane < 1-Bromobutane

Which is the correct increasing order of boiling points of the following compounds?
1-Bromoethane, 1-Bromopropane, 1-Bromobutane, Bromobenzene

(i) Bromobenzene < 1-Bromobutane < 1-Bromopropane < 1-Bromoethane

(ii) Bromobenzene < 1-Bromoethane < 1-Bromopropane < 1-Bromobutane

(iii) 1-Bromopropane < 1-Bromobutane < 1-Bromoethane < Bromobenzene

(iv) 1-Bromoethane < 1-Bromopropane < 1-Bromobutane < Bromobenzene

Answer 2

Questions are in attachment......