Medium
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?
Explanation
Explanation
Sulphur dioxide is a non-metallic oxide, so it is acidic in nature; its aqueous solution turns blue litmus red. Iron, Magnesium, and Copper oxides are metallic oxides and are basic.
PRO TIP
Re-check your working by substituting the answer back into the original question.