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Question
Aqua regia dissolves gold and platinum because ______.
Options
HNO3 acts as strong oxidising agent
HNO3 increases activity of HCl
Nascent oxygen is formed
Nascent chlorine is formed
MCQ
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Solution
Aqua regia dissolves gold and platinum because Nascent chlorine is formed.
Explanation:
The reaction between concentrated HCl and HNO3 produces highly reactive nascent chlorine, which attacks noble metals like gold and platinum.
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