See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

 6 Fusion 2 4 2 3 2 2 4 4FeCr O 8Na CO 7O Na Cr O X                    2 2 2 6 6 H O H /H O 3 2 2 2 2 2 7 2 Deep blue violet Z Cr O H O Cr O O Na Cr O Y 3 H O    2 2 7 2 4 3 2 4 2 Y Chromic anhydride Na Cr O H SO 2CrO Na SO H O    