The configuration of given tartaric acid is

1. 2R, 3R         2. 2R, 3S

3. 2S, 3S         4. 2S, 3R

Identify the structure of x,

(1)

(2)

(3)

(4)

In the given sequence reaction which of the following is the correct structure of compounds A.

(1)
(2)
(3)
(4)

Choose the correct statement

(1) I effect transfers e^– from one carbon atom to another

(2) I effect operates in both σ\p bond

(3) I effect creates not charge in molecule

(4) I effect creates partial charges and it is distance dependent

The IUPAC name of   is:

1. 2-Phenylpropan-3-al               2. Formylethylbenzene

3. 2-Phenylpropanal                   4. Ethylformylbenzene

The IUPAC name of  is:

1. Butane-2, 3-dial

2. Butane-1, 3-dione

3. Butane-2, 3-dione

4. 1, 2-dimethylethanedione

The IUPAC name of  is:

1. 4-Bromo benzenamine

2. 4-Amino-1-bromobenzene

3. 4-Bromo benzenamide

4. 1-Bromo benzencarboxamide

The IUPAC name of  is:

1. 2, 6-Dimethylhepta-2, 5-dienoic acid

2. 3, 7-Dimethylhepta-2, 5-dienoic acid

3. 1-Hydroxy-2, 6-dimethylhepta-2, 5-dienone

4. none of these

The most stable carbocation is:

1. 

2. 

3. 

4. 

The electromeric effect in organic compounds is a

1. temporary effect

2. permanent effect

3. temporary-permanent effect

4. none of the above