The Fischer projection of D-erythrose is shown below :
D-erythrose and its isomers are listed as P, Q, R, and S in Column - I. Choose the correct relationship of P, Q, R, and S with D-erythrose from Column - II.
A
P
Q
R
S
2
3
2
2
B
P
Q
R
S
3
1
1
2
C
P
Q
R
S
2
1
1
3
D
P
Q
R
S
2
3
3
1
2
JEE Advanced 2014 Paper 2 Offline
MCQ (Single Correct Answer)
+3
-1
Isomers of hexane, based on their branching, can be divided into three distinct classes as shown in the figure.
The correct order of their boiling point is
A
I > II > III
B
III > II > I
C
II > III > I
D
III > I > III
3
IIT-JEE 2011 Paper 1 Offline
MCQ (Single Correct Answer)
+1
-0.25
Among the following compounds, the most acidic is
A
p-nitrophenol
B
p-hydroxybenzoic acid
C
o-hydroxybenzoic acid
D
p-toluic acid
4
IIT-JEE 2009 Paper 2 Offline
MCQ (Single Correct Answer)
+3
-1
In the following carbocation, H/CH$$_3$$ that is most likely to migrate to the positively charged carbon is :
