MCQ
The elements whose oxides can turn litmus solution blue are:
- ACarbon and sulphur.
- BSodium and carbon.
- ✓Potassium and magnesium.
- DMagnesium and sulphur.
✓
Answer
Correct option: C.
Potassium and magnesium.
Potassium and magnesium are metals whose oxides are basic in nature. These oxides turn red litmus solution to blue.
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