Redox Reactions And Electrochemistry Ques 664
Question: Which of the following represents redox reactions-
I. $ Cr_2O_7^{2-}+2\overline{O}H\xrightarrow{{}}2Cr_4^{2-}+H_2O $ II. $ Zn+CuSO_4\xrightarrow{{}}ZnSO_4+Cu $ III. $ 2MnO_4^{-}+3M{{n}^{2+}}+4\overline{O}H\xrightarrow{{}} $ $ 5MnO_2+2H_2O $ IV. $ 2C{{u}^{+}}\xrightarrow{{}}Cu+C{{u}^{2+}} $
Options:
A) I, II
B) I, III
C) III, IV
D) II, III, IV
Show Answer
Answer:
Correct Answer: D
Solution:
[d] II, III and IV are redox reactions.
