Polysubstitution is a major drawback in

• Friedel Craf t’ s alkylation

• Reimer Tiemann reaction

• FriedelCraft's acylation

• Acetylation of aniline

502.

The increasing order of the reactivity of the following compounds towards electrophilic aromatic substitution reactions is :

              

• III < I <II

• III< II<I

• I< III< II

• II< I < III

The major product of the following reaction is :

The major product obtained in the given reaction is:

The major product obtained in the given reaction is:

The major product ‘Y’ in the following reaction is :

The correct statement regarding the comparison of staggered and eclipsed conformations of ethane is

• The eclipsed conformation of ethane is more stable than staggered conformation because eclipsed conformation has no torsional strain

• The eclipsed conformation of ethane is more stable than staggered conformation even though the eclipsed conformation has torsional strain

• The staggered conformation of ethane is more stable than eclipsed conformation because staggered conformation has no torsional strain

• The staggered conformation of ethane is more stable than eclipsed conformation because staggered conformation has no torsional strain

The IUPAC name of the compound  is

• pent - 4 yn - 2- ene

• pent - 3-en - 1-yne

• pent - 2- en-4 -yne

• pent - 2- en-4 -yne

Which of the following hydrocarbons is the most reactive towards addition of H₂SO₄?

• Ethene

• Propylene

• 3-methyl but-1-ene

• 1-butene

In the reaction,

How many electron donating groups are attached with the carbon atom of unsaturated part of the product 'B' ?

• Two

• Three

• Four

• None of these