In the above sequence Y can be
3-nitrochlorobenzene
1-nitrochlorobenzene
4-nitrochlorobenzene
none of these
Which of the following species participate in sulphonation of benzene ring?
H2SO4
SO3
HSO
SO
B.
SO3
Most electrophilic substitution reactions are irreversible but sulphonation is an exception. Treatment of benzene with "oleum" (a solution of SO3 in conc. sulphuric acid) will give the sulphonic acid, the electrophile is sulphur trioxide (SO3).
The reagent used in Gatterman Koch aldehyde synthesis is :
Pb/BaSO4
alkaline KMnO4
acidic KMnO4
CO + HCl
Cetane is a compound which has very good ignition property .Chemically it is :
CH3(CH2)14CH3
(CH3)3C(CH2)11CH3
C17H34
None of the above