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Chemistry Class 12 Chapter 10
Alkyl Halides
Test 7
1.
Which is the best method to prepare alcohol from alkyl halide?
Reaction with HX in the presence of ZnCl
2
Reaction with PCl
5
Reaction with SOCl
2
in presence of pyridine solvent
Reaction with PCl
3
2.
In primary alkyl halide the halogen atom is attached to a carbon which is further attached to?
Three
Four
One
Two
3.
Which of the following is a poor leaving group?
HSO
4
-
OH
-
Br
-
Cl
-
4.
Grignard reagent is reactive due to?
The presence of Mg atom
All of these
The presence of Mg bond
The polarity of C-Mg bond
Primary alkyl halide
5.
Alkyl halide are very reactive for nucleophile because
They have an electrophile carbon and bad leaving group
They have an nucleophile carbon and bad leaving group
They have only one electrophile carbon atom
They have an electrophile carbon and a good leaving group
6.
Which of the following C-X bond has least value of bond energy?
C-Br
C-I
C-F
C-Cl
7.
Overall reactivity of alkyl halides for particular alkyl group depends upon?
Bond energy
All of these
Strength of carbon halogen bond
Bond length
8.
SN1 mechanism of reaction depends on all the factors except?
Nature of leaving group
Nature of solvent
Strength of attacking nucleophile
Structure of alkyl halide
9.
The reactivity order of alkyl halides for a particular alkyl group?
Iodide>bromide>chloride>fluoride
Fluride>chloride>bromide>iodide
Chloride>bromide>iodide>fluride
Bromide>iodide>chloride>fluoride
10.
Which one is not a nucleophile?
NH
2
BF
2
HO
H
2
S
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