Question

Which of the following cannot be used as a test for $H_{2}O_{2}$?

• A. A paper dipped in PbS (black) turns white when brought in contact with $H_{2}O_{2}$
• B. It liberates iodine from KI solution which gives blue color with starch solution
• C. It gives blue colour with $K_{4}\lbrack Fe(CN)_{6}\rbrack$
• D. It decolourises acidified $KMnO_{4}$solution.

Answer 1

Answer: (C)

It gives blue colour with $K_{4}\lbrack Fe(CN)_{6}\rbrack$

Answer 2

: It does not give blue colour with

$K_{4}\lbrack Fe(CN)_{6}\rbrack$