Question

Generally metallic oxides are basic and non-metallic oxides are aicidic in nature. Solution of which of the following oxides in water will change the colour of blue litmus to red?

• A. sulphur dioxide
• B. iron oxide
• C. magnesium oxide
• D. copper oxide

Answer 1

The correct option is A sulphur dioxide

Sulphur forms acidic oxide. This means that sulphur dioxide and turns blue litmus red.

Hence, option "A" is correct answer.