9:which of the following reaction is possible at anode?(a)2Cr3++7H2O ---?Cr2O72-+14H+ (b)F2----?2F-(c)1/2O2+2H+---?H2O(d)none of these

SOLUTION OF OBJECTVE QUESTION NUMBER-9

The reaction possible at anode is (D) NONE OF THESE. The reqiured reaction is given below:-

Fe------> (Fe2+) + (2e-)

The anode is a part of corrosion cell in which oxidation occurs. Anions migrate to the +vely charged side of the battery by electrostatic attraction and the metal dissolves, often leaving pits.