COMEDK202510 May 2025Morning ShiftChemistryHydrocarbonsActual
Which one of the following statements is correct?
Options
- AThe Electrophilic addition to an unsymmetrical alkene always occurs through the formation of a more stable Car
- BBetween the two alkenes - (i) ( CH ₃ )₂- C = CH - CH ₃ and (ii). C ₆ H ₅- CH = CH - CH ₂- CH ₃ , compound (i)
- CGreater the number of alkyl groups attached to the double bonded Carbon atoms, the less stable is the alkene.
- DThe major product formed when 2-Methylpropene reacts with dilute H ₂ SO ₄ is tert. butyl alcohol.
Correct answer
D. The major product formed when 2-Methylpropene reacts with dilute H ₂ SO ₄ is tert. butyl alcohol.
Step-by-step solution
Electrophilic addition to an unsymmetrical alkene proceeds via the formation of a more stable carbocation intermediate, not a carbanion. Thus, the first statement is incorrect. For geometrical isomerism, each carbon atom of the double bond must be attached to two different groups. In compound (i), ( CH ₃ )₂ C = CH - CH ₃ , the carbon atom on the left is attached to two identical methyl groups, so it does not show geometrical isomerism. Thus, the second statement is incorrect. According to the stability of alkenes,