Haloalkanes & Haloarenes Test

Result

Haloalkanes & Haloarenes Test - 19

Score
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Weekly Quiz Competition

Question 1
4 / -1

Arrange the following compounds in order of increasing dipole moment : Toluene (I),m – dichlorobenzene (II), O – dichlorobenzene (III), p – dichlorobenzene (IV)

A
I < IV < II < III

B
IV < I < II < III

C
IV < I < III < II

D
IV < II < I < III
Question 2
4 / -1

A
Electrophilic – addition

B
Benzyne intermediate

C
Activated nucleophilic substitution

D
Oxirane

Solution
Question 3
4 / -1

Chlorination of toluene in the presence of light and heat followed by treatment with aqueous NaOH gives

A
o – Cresol

B
p – Cresol

C
2,4 – Dihydroxytoluene

D
Benzoic acid

Solution
Question 4
4 / -1

1 – Chlorobutane on reaction with alcoholic potash gives

A
1 – Butene

B
1 – Butanol

C
2 – Butene

D
2 – Butanol

Solution
Question 5
4 / -1

A
CH₃CH₂CN

B
NCCH₂ – CH₂CN

C
BrCH₂ – CH₂CN

D
BrCH = CHCN

Solution
Question 6
4 / -1

Toluene when refluxed with Br₂ in the presence of light mainly gives

A
o – Bromotoluene

B
p – Bromotoluene

C
Mixture of o – and p – bromotoluene

D
Benzyl bromide

Solution
Question 7
4 / -1

A
o – Bromotoluene

B
m – Bromotoluene

C
p – Bromotoluene

D
3 – Bromo – 2, 4, 6 – trichlorotoluene

Solution
Question 8
4 / -1

The pesticide DDT slowly changes to

A
CCl₃ – CHO and chlorobenzene

B
p, p’ – Dichlorodiphenylethene

C
p, p’ – Dichlorodiphenyldichloroethane

D
p, p’ – Dichlorodiphenyldichloroethane

Solution
Question 9
4 / -1

The reactivity order of halides for dehydro halogenation is

A
R – F > R – Cl >R – Br > R – I

B
R – I > R – Br > R – Cl > R – F

C
R – I > R – Cl > R – Br > R – F

D
R – F > R – I > R – Br > R – Cl
Question 10
4 / -1

Identify the set of reagent/reaction conditions ‘X’ and ‘Y’ in the following set of transformations :

A
X=dilute aqueous NaOH, 20^oC; Y=HBr/acetic acid, 20^oC

B
X= concentrated alcoholic NaOH, 80^oC ; Y = HBr/acetic acid, 20^o C

C
X = dilute aqueous NaOH, 20^oC; Y = Br₂/CHCl₃, O^oC

D
X=concentrated alcoholic NaOH, 80^oC; Y=Br₂/CHCl₃, 0^oC

Solution