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Materials : Metals and Non-Metals — Science STD 8 — Question

Gujarat BoardEnglish MediumSTD 8ScienceMaterials : Metals and Non-Metals1 Mark
MCQ
Metals, except $Al$ and $Zn,$ react with oxygen to form _______ oxides.
  • ✓
    Basic
  • B
    Acidic
  • C
    Neutral
  • D
    Amphoteric
✓

Answer

Correct option: A.
Basic

Most of the metals react with oxygen to form metal oxides. For example: magnesium reacts with oxygen to form magnesium oxide. The reaction involved is: $2Mg(s) + O2(g) \rightarrow 2MgO(s)$ The metal oxide form alkali solution when dissolved in water. This solution turns red litmus paper to blue. Hence, these metal oxides are basic in nature.

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