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CBSE Class 10 Science Question 2 of 46

Solved 2023 Question Paper CBSE Class 10 Science — Question 2

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Question 2

The emission of brown fumes in the given experimental set-up is due to

The emission of brown fumes in the given experimental set-up is due to. CBSE 2023 Science Class 10 Question Paper Solved.
  1. thermal decomposition of lead nitrate which produces brown fumes of nitrogen dioxide.
  2. thermal decomposition of lead nitrate which produces brown fumes of lead oxide.
  3. oxidation of lead nitrate forming lead oxide and nitrogen dioxide.
  4. oxidation of lead nitrate forming lead oxide and oxygen.
Answer

thermal decomposition of lead nitrate which produces brown fumes of nitrogen dioxide.

Reason — Thermal decomposition of lead nitrate takes place which produces brown fumes of nitrogen dioxide.

2Pb(NO3)2 ⟶ 2PbO + 4NO2 + O2