Question
When you take Lead nitrate powder in a boiling tube and heat it, you will observe the emission of brown fumes that are of _____________________.
This question was previously asked in
SSC CGL 2024 (Tier-I) Previous Year Paper (17-Sep-2024) (Shift 3)
The correct answer is
Nitrogen dioxide
When Lead Nitrate (Pb(NO3)2) is heated, it decomposes as follows:
2Pb(NO3)2 → 2PbO + 4NO2 + O2
Since NO₂ (Nitrogen dioxide) is a brown gas, it is responsible for the brown fumes observed.
Thus, the correct answer is Nitrogen dioxide (NO₂)
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