Organic Chemistry – Some Basic Principles and Techniques

Vanillin compound obtained from vanilla beans, has total sum of oxygen atoms and electrons is .

Ionic reactions with organic compounds proceed through : Choose the correct answer from the options given below :

1. (A) only
2. (B) only
3. (C) only
4. (D) and (E) only

The functional group that shows negative resonance effect is :

1. -OH
2. -OR
3. -COOH
4. -NH2

A species having carbon with sextet of electrons and can act as electrophile is called

1. pentavalent carbon
2. carbon free radical
3. carbanion
4. carbocation

Given below are two statements: In the light of the above statements, choose the most appropriate answer from the options given below:

1. Statement I is incorrect but Statement II is correct.
2. Statement I is correct but Statement II is incorrect.
3. Both Statement I and Statement II are correct.
4. Both Statement I and Statement II are incorrect.

Which of the following molecule/species is most stable?

1. [figure]
2. [figure]
3. [figure]
4. [figure]

Structure of 4-Methylpent-2-enal is :

1. H2C= H |C- CH3 | H |C-CH2- O \|C-H
2. CH3-CH2- CH3 |C=CH- O \|C-H
3. CH3- CH3 |CH-CH=CH- O \|C-H
4. CH3-CH2-CH= CH3 |C- O \|C-H

The correct stability order of carbocations is

1. (CH3)3C > CH3- CH2 > (CH3)2 CH > CH3
2. (CH3)3 C > (CH3)2 CH > CH3- CH2 > CH3
3. CH3 > CH3- CH2 > CH3- CH3 | CH > (CH3)3C
4. CH3 > (CH3)2 CH > CH3- CH2 > (CH3)3 C

IUPAC name of following compound is : CH3- NH2 |CH-CH2-CN

1. 2-Aminobutanenitrile
2. 3-Aminopropanenitrile
3. 2-Aminopentanenitrile
4. 3-Aminobutanenitrile

The difference in energy between the actual structure and the lowest energy resonance structure for a given compound is

1. electromeric energy
2. resonance energy
3. ionization energy
4. hyperconjugation energy