The geometrical isomerism is shown by:-

1.  

2.  

3.  

4.  

Subtopic:  Stereo Isomers |
 64%
Level 2: 60%+
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Correct stability order of the following carbocation:-

(1) ii > i > iii > iv

(2) i > ii > iii > iv

(3) iii > i > ii > iv

(4) iv > i > ii > iii

Subtopic:  Reaction Intermediates ; Preparation & Properties |
Level 3: 35%-60%
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The presence of a halogen on the benzene ring in a nitration reaction leads to:

1. Direct nitro group to come at meta and deactivate the ring due to –I effect of halogen.
2. Direct nitro group to come at ortho and para position and deactivate the ring due to –I effect of halogen.
3. Direct nitro group to come at meta and activate the ring toward nitration reaction.
4. Nitration reaction does not take place due to deactivation caused by –I effect of halogen.
Subtopic:  Types of Reaction |
 72%
Level 2: 60%+
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The pair of structures that does not represent isomers is:

1. 2.
3. 4.

Subtopic:  Structural Isomers |
 67%
Level 2: 60%+
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Which among these can exhibit tautomerism?

1. a only

2. b only

3. c only

4. a and c

Subtopic:  Structural Isomers |
 57%
Level 3: 35%-60%
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Total number of stereoisomers of the compound:-

1. 10

2. 8

3. 6

4. 4

Subtopic:  Stereo Isomers |
Level 3: 35%-60%
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Aromatic species is:-

1. 

2. 

3. 

4. 

Subtopic:  Aromaticity & Polarity |
 88%
Level 1: 80%+
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Which of the following will show Tautomerism

1.  

2.  

3.  

4.  

Subtopic:  Structural Isomers |
 52%
Level 3: 35%-60%
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The IUPAC name of the give compounds

                  

1. 3 – keto – 2 – methyl – pent – 4 – enal

2. 2 – keto – 2 – ethyl but – 2 – enal

3. 3 – keto – 2 – propyl pent – 4 – enal

4. 2 – keto – 2 – propyl pent – 4 – enal

Subtopic:  Nomenclature |
 86%
Level 1: 80%+
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Which carbocation is the most stable among the options provided?

1. 2.
3. 4.

Subtopic:  Reaction Intermediates ; Preparation & Properties |
 80%
Level 1: 80%+
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