The total number of $$\pi $$-bond electrons in the following structure is
A
12
B
16
C
4
D
8
2
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
Given :
Which of the given compounds can exhibit tautomerism?
A
II and III
B
I, II and III
C
I and II
D
I and III
3
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
Which of the following is the most correct electron displacement for a nucleophilic reaction to take place?
A
B
C
D
4
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
In Duma's method for estimation of nitrogen, 0.25 g of an organic compound gave 40 mL of nitrogen collected at 300 K temperature and 725 mm pressure. If the aqueous tension at 300 K is 25 mm, the percentage of nitrogen in the compound is