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CGP EDU Academic Team
Published on: August 13, 2026
A test tube containing a nitrate and another containing a bromide and MnO 2 are treated with concentrated H 2 SO 4 . The reddish brown fumes evolved are passed through water. The water will be coloured by :
Text Solution
Verified by ExpertsThe correct answer is:
B
NO 3 – gives NO 2 with concentrated H 2 SO 4 which on passing through water form colourless HNO 3 ( λ ) and HNO 2 ( λ ). Br – + MnO 2 on heating with concentrated H 2 SO 4 gives Br 2 gas which on passing through water imparts it a reddish brown colour.
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