When crystals of lead nitrate are heated strongly in a dry test tube
(a)crystals immediately melt&
(b) a brown residue is left
(c) white fumes appear in the test tube
(d) a yellow residue is left

Academic Chemistry NCERT Class 10

Correct Answer: (b) a brown residue is left

Explanation: Pungent smelling, brown fumes are evolved due to NO₂ gas and brown coloured residue of lead oxide (PbO) is left.

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Updated on: 14-Mar-2023

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