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Aqueous solution of sodium carbonate absorbs NO and NO2 to give

1. CO2 + NaNO3
2. CO2 + NaNO2
3. NaNO2 + CO
4. NaNO3 + CO

Correct answer: CO2 + NaNO2

Solution

Sodium carbonate reacts with NO and NO2 in aqueous solution to form sodium nitrite (NaNO2) and carbon dioxide (CO2). This is a common reaction involving the absorption of nitrogen oxides.

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