1.

A filter paper soaked in salt X tums brown when exposed to `HNO_(3)` capor. The salt X isA. KClB. KBrC. KlD. `K_(2)SO_(4)`

Answer» Correct Answer - C
`2KI+4HNO_(3)toI_(2)+2NO_(2)+2KNO_(3)+2H_(2)O`
Iodide ion is a strong reducing agent and reduces `HNO_(3)" vapours to " NO_(2)` (Brown gas)


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