Question

NaNO3 on heating gives -

  • O2 + NaNO2
  • NO2
  • O2 + NO2
  • None of these

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Answer

Upon heating, sodium nitrate (NaNO_3) decomposes to form sodium nitrite (NaNO_2) and releases oxygen gas (O_2). The reaction can be represented as follows:

$$ 2 , \text{NaNO}_3 \rightarrow 2 , \text{NaNO}_2 + \text{O}_2 $$

Therefore, the correct answer is:

A. O_2 + NaNO_2


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