Generally metallic oxides are basic and non-metallic oxides are acidic in nature. Solution of which of the following oxides in water will change the colour of blue litmus to red?- Sulphur dioxide
- Iron oxide
- Magnesium oxide
- Copper oxide
Correct Answer: (a) Sulphur dioxide
Explanation: Sulphur is a non-metal and it forms an acidic oxide, i.e. sulphur dioxide (SO2) which turns blue litmus red.
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