Q.
Column I Column II
A Nascent hydrogen p Permutit
B Hard water q Used as tracer in the study of reaction mechanism
C Hydrogen peroxide r Reduces to
D Heavy Water s Reduces to
t Reduces nitrobenzene to aniline

for above column matching how many given matchings are correct.

 51  148 Hydrogen Report Error

Answer: 4

Solution:

(A)

(B) Hard water purified by permutit method
(C) Hydrogen peroxide is used as an oxidizing and also as a reducing agent.
(D) Heavy water is used as tracer in the study of reaction mechanism.