Question : Which of the following is not a neutral oxide?
Option 1: N2O
Option 2: Na2O
Option 3: NO
Option 4: CO
Correct Answer: Na 2 O
Solution : The correct option is Na 2 O.
Sodium oxide (Na 2 O) is not a neutral oxide. A neutral oxide reacts with water to form a neutral solution. Na 2 O is a basic oxide, meaning it reacts with water to form a basic (alkaline) solution. N 2 O (nitrous oxide) and NO (nitric oxide) are neutral oxides, while CO (carbon monoxide) is a non-metallic oxide with neutral behaviour.
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