Class
Subject
:
:
Braj Education Centre
(Cultivating Academic Minds)
XII
Chemistry
Test topic
1)
: Alky & Aryl halides, Alcohols, Phenols & Ethers
Write the IUPAC name of
H C
3
− (
3
) = ( ) −
CH
2
−
OH
2)
3)
How do you convert the following? i) Phenol to Benzene ii) Ethanol to
Ethene
What are allylic halides? Which of the following are allylic halides?
4)
5)
6)
Give the chemical tests to distinguish between the following pairs of compounds : a.
Ethanol and Phenol b.
Butan-2-ol and 2-methylpropan-2-ol
What is the difference in behaviour of Phenol and Cyclohexanol towards
NaOH? Explain with suitable reasons the cause of this difference
The bond angle in alcohols is slightly less than the tetrahedral angle
(109°-28'). Why?
7)
Identify A and B in the following reaction:
O
2 A
+ →
B
8) Explain:
1) The reaction with of
R
−
OH with acid chloride is carried out in the presence of
9) a pyridine
2) The products of nitration of phenol can be separated by steam distillation a) Draw the structure and give the IUPAC name of Aspirin
b) Give the structure and IUPAC names of the product formed in the Reaction of propanone with methyl magnesium bromide followed by hydrolysis.
10) Write the names of the reagents and equations in the conversion of a.
Anisole to p-methoxyacetophenone b.
C ALL M E 24 X 7 @
9818501969; 22711085 1 email: s_braj@rediffmail.com

11)
12)
Explain how an OH group attached to a carbon in the benzene ring activates benzene towards electrophilic substitution. a) Discuss the mechanism of the following reaction
C - C
H
+
OH
Heat
C C H O
2 b) With the help of an example, illustrate Kolbe’s reaction
13) a) Identify A and B in the following reaction
14)
15) b) Discuss the mechanism of the following reaction
CH CH
3
=
CH
2
+
H O
2
+
H
← CH CH OH CH
3
( )
3 a) What is meant by hydroboration-oxidation reaction? Illustrate it with an example. b) Explain why is ortho nitrophenol more acidic than ortho methoxyphenol c) What is meant by chirality of a compound? Give an example.
An organic compound A
(
C H O
) reacts with sodium to form B with the evolution of
H
2 and gives yellow compound C on treatment with iodine and
NaOH
. When heated with concentrated
H SO
2 4 at 413K it gives D (
C H O
) , which on treatment with concentrated
HI gives E. D is also obtained when B is heated with E
Identify A to E with reasons
Write appropriate chemical reaction in support of your answer
C ALL M E 24 X 7 @
9818501969; 22711085 2 email: s_braj@rediffmail.com

C ALL M E 24 X 7 @
9818501969; 22711085 3 email: s_braj@rediffmail.com