Question

21) What is produced when benzene reacts with a mixture of nitric acid sulphuric acid!
(a) C6H5-OH (b) CGH-SO2
(c) CcH3-NOZ (d) C6H5-SO3H
22) Benzene is converted to nitrobenzene by a mixture of sulphuric acid and nitric acid.
What is the catalyst for this reaction?
(a) the nitronium ion
(b) nitric acid
(c) the sulphonium ion
(d) sulphuric acid
23) In the reaction of benzene with funing sulphuric acid to produce benzene sulphonic
acid, what is the effective electrophile?
(a) so
(b) H2SO4
(c) SO3 (d) H,80
24) Which of the following is the most affective catalyst for the reaction of benzene and Br2
to produce bromobenzene?
(a) FeBr3
(b) KBT
(c) HBT (d) HNO3​

Answer 1

Answer:

21.C6H5NO2

22.sulphuric acid

23.H2SO4

24.FeBr3