MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Inorganic Chemistryd and f Block elementsPotassium Dichromate
Sodium chromate is prepared by (a)fusing chromite (FeCr2O4) with sodium chloride in air (b)fusing chromite (FeCr2O4) with sodium hydroxide in air (c)fusing (NH4)2Cr2O7 with sodium hydrogen sulphate in nitrogen
D.fusing sodium dichromate with carbon
Explanation
2 4 2 2 4 2 3 2 4FeCr O + 16NaOH + 7O 8Na CrO + 2Fe O + 8H O -> 2 4 Na CrO can be prepared by fusing 2 4 FeCr O with NaOH in air.
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