Which of the following statements with regard to heating of lead nitrate powder over a flame are correct?
1. Brown fumes of NO₂ are released.
2. Colourless O₂ gas is released.
3. It is an example of oxidation reaction.
4. It is an example of thermal decomposition used for the production of NO₂ gas.
Select the correct answer using the code given below.
General Knowledge
2023
CDS General Knowledge 2023
CDS 2023
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