Redox Reactions And Electrochemistry Ques 507
Question: Which of the following is redox reaction [CBSE PMT 1997]
Options:
A) $ H_2SO_4 $ with $ NaOH $
B) In atmosphere, $ O_3 $ from $ O_2 $ by lightning
C) Evaporation of $ H_2O $
D) Nitrogen oxides form nitrogen and oxygen by lightning
Show Answer
Answer:
Correct Answer: D
Solution:
$ \overset{0}{\mathop{2N_2}},+\overset{0}{\mathop{O_2}},\to \overset{,}{\mathop{\overset{+2}{\mathop{2N}}\overset{-2}{\mathop{O}},}}, $ Here O.N. of N increases from O in $ N_2 $ to +2 in NO, 2- and that of decreased from O in $ O_2 $ to -2 in O, therefore, it is a redox reaction.
