If one of the following oxides is heated with hydrogen or carbon using a bunsen burner. it is not reduced to the metal, which one is it?

A. lead oxide
B. Magnesium oxide
C. Copper oxide
D. Tin oxide

Correct Answer:

Option B – Magnesium oxide

Explanation

The oxides of Potassium, Sodium, Calcium, and Magnesium are not reduced when they react with carbon and hydrogen.