Sulphonation of Aromatics

Q.

Which alkyl halide has maximum reactivity?

Q. The intermediate formed during the sulphonation reaction of benzene is:

1. 
2. None of the above
3. 
4. 

Q. Which of the following is active species in sulphonation of benzene?

1. $S{O}_3$
2. $S{O}_3^{+}$
3. $S{O}_3^{-}$
4. $HS{O}_4^{+}$

Q. Arrange the following in the increasing order of reactivity towards sulphonation with fuming sulphuric acid:
Benzene, toluene, methoxybenzene, chlorobenzene.

1. Chlorobenzene < Benzene < Toluene < Methoxy benzene.
2. Toluene < Methoxy benzene<Chlorobenzene < Benzene
3. Toluene < Methoxy benzene<Chlorobenzene < Benzene
4. Chlorobenzene < TolueneBenzene < Methoxy benzene.

Q.

Here A, B, X & Y are

1. X = CH₃COC₂H₅, Y = CH₃COOH, A = C₂H₅OH, B = CH₃COOK

2. X = CH₃COC₂H₅, Y = C₂H₅OH, A = CH₃COOH, B = CH₃COOK

3. X = CH₃COCH₃, Y = CH₃COOH, A = CH₃COOK, B = C₂H₅OH

4. X = CH₃COOC₂H₅, Y = CH₃COOH, A = CH₃COOK, B = C₂H₅OH

Q. Arrange the following in the increasing order of reactivity towards sulphonation with fuming sulphuric acid:
Benzene, toluene, methoxybenzene, chlorobenzene.

1. Chlorobenzene < Benzene < Toluene < Methoxy benzene.
2. Toluene < Methoxy benzene<Chlorobenzene < Benzene
3. Toluene < Methoxy benzene<Chlorobenzene < Benzene
4. Chlorobenzene < TolueneBenzene < Methoxy benzene.