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Question
The treatment of galena with HNO3 produces a gas that is ______.
Options
Paramagnetic
Bent in geometry
an acidic oxide
Colourless
MCQ
Fill in the Blanks
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Solution
The treatment of galena with HNO3 produces a gas that is paramagnetic and colourless.
Explanation:
\[\ce{PbS + 2HNO3 -> Pb(NO3)2 + S + NO + H2O}\]
NO is paramagnetic due to the presence of an unpaired electron. It is a neutral and colourless gas.
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