1
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
Which of the following species contains equal number of $$\sigma $$- and $$\pi $$-bonds ?
A
(CN)2
B
CH2(CN)2
C
HCO3$$-$$
D
XeO4
2
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
Treatment of cyclopentanone

AIPMT 2015 Cancelled Paper Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 88 English
with methyl lithium gives which of the following species ?
A
Cyclopentanonyl radical
B
Cyclopentanonyl biradical
C
Cyclopentanonyl anion
D
Cyclopentanonyl cation
3
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
The total number of $$\pi $$-bond electrons in the following structure is

AIPMT 2015 Cancelled Paper Chemistry - Some Basic Concepts of Organic Chemistry Question 78 English
A
12
B
16
C
4
D
8
4
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
Given :
AIPMT 2015 Cancelled Paper Chemistry - Some Basic Concepts of Organic Chemistry Question 77 English
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
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