Organic Chemistry – Some Basic Principles and Techniques

Which of the following are aromatic?

1. B and D only
2. A and C only
3. C and D only
4. A and B only

In the given compound, the number of 2° carbon atom/s is . [figure]

1. Two
2. Three
3. Four
4. One

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

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

The shape of carbocation is :

1. tetrahedral
2. diagonal pyramidal
3. diagonal
4. trigonal planar

IUPAC name of following hydrocarbon(X) is : CH3- CH3 |CH-CH2- (X)CH2- CH3 |CH- CH3 |CH-CH2-CH3

1. 2,5,6-Trimethyloctane
2. 2-Ethyl-2,6-diethylheptane
3. 3,4,7-Trimethyloctane
4. 2-Ethyl-3,6-dimethylheptane

Total number of aromatic compounds among the following compounds is . [figure]

Functional group present in sulphonic acids is :

1. -SO2
2. [figure]
3. -SO3H
4. -SO4H

[figure] The correct arrangement for decreasing order of electrophilic substitution for above compounds is :

1. (III) > (IV) > (II) > (I)
2. (III) > (I) > (II) > (IV)
3. (II) > (IV) > (III) > (I)
4. (IV) > (I) > (II) > (III)

Number of carbocations from the following that are not stabilized by hyperconjugation is . [figure]

Number of and bonds present in ethylene molecule is respectively :

1. 3 and 1
2. 5 and 1
3. 4 and 1
4. 5 and 2