The element whose oxide will turn red litmus solution to blue will be:
sodium
sulphur
carbon
phosphorus

Academic Chemistry NCERT Class 8

Correct Answer: A. sodium

Explanation: Metals react with oxygen to form metallic oxides. These metallic oxides are basic because they react with water to form bases. Sodium is a metal, its oxide will be basic in nature and it will turn red litmus solution to blue.

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Updated on: 10-Oct-2022

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