A molecule, among the following, capable of showing tautomerism is:  

1.  R3CNO2

2.  RCH2NO2

3.  CH32NH

4.  CH33CNO

Subtopic:  Structural Isomers |
 74%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

(+)-mandelic acid has a specific rotation of +158°. What would be the observed specific rotation of a mixture containing 25% (-)-mandelic acid and 75% (+)-mandelic acid?

1.  +79°

2.  -118.5°

3.  -79°

4.  +118.5° 

Subtopic:  Conformational Isomers |
 53%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

The number of isomers possible for C7H8O are

1. 3

2. 4

3. 5

4. 6

Subtopic:  Structural Isomers |
 61%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The number of geometrical isomers of

CH3CH=CH-CH=CH-CH=CHCl
 are

1. 4

2. 6

3. 8

4. 10

Subtopic:  Stereo Isomers |
 75%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

C3H9N can not represent

1. quaternary salt

2. 1° amine

3. 2° amine

4. 3° amine

Subtopic:  Structural Isomers |
 83%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The number of primary amines of the formula C4H11N are :

1. 1 2. 3
3. 4 4. 5
Subtopic:  Structural Isomers |
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The two optical isomers given below, namely

 and  are

1. enantiomers

2. geometrical isomers

3. structural isomers

4. diastereomers

Subtopic:  Stereo Isomers |
 75%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

An isomer of ethanol is-

1. Methanol 2. Diethyl ether
3. Acetone 4. Dimethyl ether
Subtopic:  Structural Isomers |
 71%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The maximum number of carbon atoms arranged linearly in the molecule,  CH3-CC-CH=CH2, are -

1. 3

2. 4

3. 5

4. 6

Subtopic:  Hybridisation & Structure of Carbon Compounds |
 52%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

the optically active tartaric acid is named as D-(+)- tartaric acid because it has a positive

1.  optical rotation: and is derived from D-glucose

2. pH in an organic solvent

3. optical rotation and is derived from D-(+)-glyceraldehyde

4. optical rotation only when Substituted by deuterium 

Subtopic:  Stereo Isomers |
 76%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints