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Noel George Cherian
Subject: Chemistry
, asked on 21/4/18
acetaldehyde to 2 pentanol
Answer
1
Noel George Cherian
Subject: Chemistry
, asked on 21/4/18
explain dow's process
Answer
1
Mitali
Subject: Chemistry
, asked on 19/4/18
What will be the order of stability..??!
Answer
1
Muhammad Arafath R Z
Subject: Chemistry
, asked on 18/4/18
Online 2018 Chemistry question
Q.1. On treatment of the following compound with a strong acid, the most susceptible site for bond cleavage is :
1. O2 - C3
2. C4 - O5
3. C1 - O2
4. O5 - C6
Answer
1
Yashi Mishra
Subject: Chemistry
, asked on 18/4/18
Correct answer is 1. Explain in detail
Q.4. Molecule which does not oxidise using PCC
(1)
(2)
(3)
(4)
Answer
1
Yashi Mishra
Subject: Chemistry
, asked on 18/4/18
Correct answer is 4. Name the mechanism used in the reaction.
Q.37.
major product is
(1)
(2)
(3)
(4)
Answer
2
Yashi Mishra
Subject: Chemistry
, asked on 18/4/18
Explain the order of nucleophilicity in all options in detail. (correct answer is 4)
Answer
2
Yashi Mishra
Subject: Chemistry
, asked on 17/4/18
Q. Reaction involving anti addition is
1
.
C
H
2
=
C
H
2
→
H
+
/
H
2
O
2
.
C
H
3
C
H
=
C
H
2
→
H
X
3
.
C
H
3
C
H
=
C
H
2
→
N
a
B
H
4
H
g
O
A
c
2
/
H
2
O
4
.
C
H
2
=
C
H
2
→
H
2
O
2
/
O
H
-
B
2
H
6
/
T
H
F
Answer
1
Yashi Mishra
Subject: Chemistry
, asked on 17/4/18
Correct answer is 4. Explain in detail, why no reaction takes place
Q35.
Product. product of the reaction is
(4) No reaction
Answer
2
Yashi Mishra
Subject: Chemistry
, asked on 17/4/18
Correct answer is 4. Show the steps involved in detail.
Q4. Identify the final product,
CH
2
=
CH
2
→
Cl
2
/
H
2
O
X
→
aq
.
KOH
Y
(1) 2- chloroethanol (2) 2- chloromethanol
(3) 1- chloroethanol (4) Ethylene glycol
Answer
1
Archana
Subject: Chemistry
, asked on 1/4/18
Write this give bond line structure in normal/expanded form..?
Answer
1
Manasi Mujumdar
Subject: Chemistry
, asked on 30/3/18
ans??:
Q. The correct sequence of reagents for the following conversion will be :
Options
A) CH
2
MgBr, H
+
/CH
3
OH,[Ag(NH
3
)
2
]
+
OH
-
B) CH
3
MgBr, [Ag(NH
3
)
2
]
+
OH
-
, H
+
/CH
3
OH
C) [Ag(NH
3
)
2
]
+
OH
-
, CH
3
MgBr, H
+
/CH
3
OH
D) [AG(NH
3
)
2
+
OH
-
,H
+
/CH
3
OH,CH
3
MgBr
Answer
2
Shreya Choudhary
Subject: Chemistry
, asked on 22/3/18
The carbanion which is most stable is
Answer
1
Shreya Choudhary
Subject: Chemistry
, asked on 22/3/18
W
h
i
c
h
o
f
f
o
l
l
o
w
i
n
g
i
s
i
n
c
o
r
r
e
c
t
m
a
t
c
h
?
(
1
)
H
-
C
|
|
O
-
C
H
2
-
C
O
O
H
:
3
-
O
x
o
p
r
o
p
a
n
o
i
c
a
c
i
d
(
2
)
C
H
3
-
O
-
C
|
|
O
-
H
:
M
e
t
h
o
x
y
m
e
t
h
a
n
a
l
(
3
)
H
2
N
-
C
|
|
O
-
H
:
M
e
t
h
a
n
a
m
i
d
e
(
4
)
C
H
3
-
C
H
2
C
N
:
P
r
o
p
a
n
e
n
i
t
r
i
l
e
Answer
1
Shubhrajyoti Ghosh
Subject: Chemistry
, asked on 16/3/18
No links please
Q.21. (i) Write notes on (Example only).
(a) Cannizzaro reaction
(b) Stephen reduction
(ii). An organic compound A(
C
7
H
5
N
) on acidic hydrolysis gives another compound (B) which is a monobasic aromatic carboxylic acid 'B' on treatment with ammonia gives a salt which on heating gives 'C' The compound 'C' undergoes Hoffman hypobromide reaction to yield aniline. Identify A, B, C and write the chemical reactions involved.
Answer
1
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Next
What are you looking for?
Q.1. On treatment of the following compound with a strong acid, the most susceptible site for bond cleavage is :
1. O2 - C3
2. C4 - O5
3. C1 - O2
4. O5 - C6
Q.4. Molecule which does not oxidise using PCC
(1)
(2)
(3)
(4)
Q.37.
![]()
major product is(1)
(2)
(3)
(4)
Q35.
Q4. Identify the final product,
(1) 2- chloroethanol (2) 2- chloromethanol
(3) 1- chloroethanol (4) Ethylene glycol
Q. The correct sequence of reagents for the following conversion will be :
Options
A) CH2MgBr, H+/CH3OH,[Ag(NH3)2]+OH-
B) CH3MgBr, [Ag(NH3)2]+OH-, H+/CH3OH
C) [Ag(NH3)2]+OH-, CH3MgBr, H+/CH3OH
D) [AG(NH3)2+OH-,H+/CH3OH,CH3MgBr
Q.21. (i) Write notes on (Example only).
(a) Cannizzaro reaction
(b) Stephen reduction
(ii). An organic compound A() on acidic hydrolysis gives another compound (B) which is a monobasic aromatic carboxylic acid 'B' on treatment with ammonia gives a salt which on heating gives 'C' The compound 'C' undergoes Hoffman hypobromide reaction to yield aniline. Identify A, B, C and write the chemical reactions involved.