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WBCS Main Examination 2023 — Paper IV: General Studies II · Question 81 of 200

Q81
General ScienceChemistry
Reaction of Lead Oxide (PbO) and hydrogen gas (H$_2$) leads to
  1. a.reduction of lead.
  2. b.oxidation of lead.
  3. c.formation of PbCl$_2$.
  4. d.formation of PbO.

Answer: (A) reduction of lead.

In PbO + H$_2$ → Pb + H$_2$O, hydrogen removes oxygen from lead oxide, so lead is reduced from +2 to metallic lead while hydrogen is oxidised. No chlorine is present to form PbCl$_2$, and PbO is the reactant, not the product.