Question

A gas which turns potassium iodide paper brown

Answer 1

Answer:

when filter paper dipped in potassium iodide brought near to HNO3 fumes, they form brown coloured iodine and nitrogen dioxide gas.

Answer 2

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when filter paper dipped in potassium iodide brought near to HNO3 fumes, they form brown coloured iodine and nitrogen dioxide gas.