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CGP EDU Academic Team
Published on: August 14, 2026
White precipitate of Mn(OH) 2 on heating with PbO 2 and concentrated HNO 3 gives red-violet (purple) colour due to the formation of :
Text Solution
Verified by ExpertsThe correct answer is:
A
Mn(OH) 2 + 2HNO 3 
Mn(NO 3 ) 2 + 2H 2 O.
2Mn(NO 3 ) 2 + 5PbO 2 + 6HNO 3 
2HMnO 4 (red – violet or purple colour) + 5Pb(NO 3 ) 2 + 2H 2 O.
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