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SSC GD 2023 PYQ — Question 28

SSC GD Constable (English) - 27 Jan 2023 - Shift 3 • General Awareness • Q28

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What gases are released when lead nitrate is heated?

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Correct answer: D

Explanation

The correct answer is option 4 i.e. Nitrogen dioxide and oxygen.

  • When lead nitrate Pb(NO₃)₂ is heated, it undergoes decomposition to form lead oxide (PbO), nitrogen dioxide (NO2), and oxygen gas (O2). 
  • Therefore, the two gases released during the heating of lead nitrate are nitrogen dioxide (NO2) and oxygen gas (O2).