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

Which of the following will show Tautomerism

1.  

2.  

3.  

4.  

Aromatic species is:-

1. 

2. 

3. 

4. 

Total number of stereoisomers of the compound:-

1. 10

2. 8

3. 6

4. 4

Which among these can exhibit tautomerism?

1. a only

2. b only

3. c only

4. a and c

The pair of structures that does not represent isomers is:

1.		2.
3.		4.

The presence of a halogen on the benzene ring in a nitration reaction leads to:

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

The geometrical isomerism is shown by:-

1.  

2.  

3.  

4.  

The most stable carbocation among the following is-

1.		2.
3.		4.