Which of the following is the most stable carbocation
 

1.
2.
3.
4.

1.    

2.  

3.

4. ${\mathrm{CH}}_2=\stackrel{\oplus }{\mathrm{C}}\mathrm{H }$
 

What is the decreasing order of acidity for the compounds given below?

The correct increasing order of carbon-carbon bond length in the given compounds is: 

1. III<II<I<IV

2. IV<I<II<III

3. I<II<III<IV

4. I<IV<III<II

In the following compounds,

The order of basicity is

1. IV>I>III>II

2. III>I>IV>II

3. II>I>III>IV

4. I>III>II>IV

Which of the following happens to be the carbanion with highest stability?

The IUPAC name of the following compounds is:
 

1. 1-Bromocyclohexane carboxylic acid

2. 3-Bromocyclohexanoic acid

3. 3-Bromoheptanoic acid

4. 3-Bromocyclohexanecarboxylic acid

Trans-2-butene on bromination using CS₂ gives which dibromoderivative

1. (R), (R)-2,3-dibromobutane

2. (S),(S)-2,3-dibromobutane

3. Racemic-2,3-dibromobutane

4. Meso-2,3-dibromobutane

Which of the following carbocations is expected to be most stable?

1. 
2. 
3.  
4. 

A group that deactivates the benzene ring towards electrophilic substitution but which directs the incoming group principally to the o- and p-position is.

1. -NH₂                   
2. -Cl
3. -NO₂                   
4. -C₂H₅

In the given conformation C₂ is rotated about C₂-C₃ bond anticlockwise by an angle of 120° then the conformation obtained is

1. Fully eclipsed conformation

2. Partially eclipsed conformation

3. Gauche conformation

4. Staggered conformation