Which of the following substances acts as an oxidising as well as a re

1.	Which of the following substances acts as an oxidising as well as a reducing agent
Answer» `Na_(2)O` `SnCl_(2)` `Na_(2)O_(2)` `NaNO_(2)` Solution :`NaNO_(2)` (Sodium nitrite) ACTS both as oxidising as well as reducing AGENT because N atom is in +3 oxidation state in it (intermediate oxidation state). Oxidising property: `NaNO_(2)+2KI+2H_(2)SO_(4)toNa_(2)SO_(4)+K_(2)SO_(4)+2NO+2H_(2)O+I_(2)` Reducing Property : `H_(2)O_(2)+NaNO_(2)toNaNO_(3)+H_(2)O`

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