1
MCQ (Single Correct Answer)

AIPMT 2015 Cancelled Paper

The total number of $$\pi $$-bond electrons in the following structure is

A
12
B
16
C
4
D
8

Explanation

No. of double bonds = 4

No. of $$\pi $$ bond electrons

= 2 × no. of double bond

= 2 × 4 = 8
2
MCQ (Single Correct Answer)

AIPMT 2015 Cancelled Paper

Treatment of cyclopentanone


with methyl lithium gives which of the following species ?
A
Cyclopentanonyl radical
B
Cyclopentanonyl biradical
C
Cyclopentanonyl anion
D
Cyclopentanonyl cation

Explanation

3
MCQ (Single Correct Answer)

AIPMT 2015

Which of the following is not the product of dehydration of

A
B
C
D

Explanation

4
MCQ (Single Correct Answer)

AIPMT 2015

Which of the following statements is not correct for a nucleophile?
A
Ammonia is a nucleophile.
B
Nucleophiles attack low e$$-$$ density sites.
C
Nucleophiles are not electron seeking.
D
Nucleophile is a Lewis acid.

Explanation

Nucleophile is a species that provide electron while species which are deficient of electrons are termed as lewis acid, hence nucleophiles are usually lewis bases.

EXAM MAP

Joint Entrance Examination

JEE Advanced JEE Main

Medical

NEET

Graduate Aptitude Test in Engineering

GATE CSE GATE ECE GATE ME GATE PI GATE EE GATE CE GATE IN