MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Inorganic Chemistrys- Block 3.0Previous Year Questions

Which of the following on thermal decomposition yields a basic as well as an acidic oxide? (Kerala CEE 2008)

A.KClO₃

B.Na₂CO₃

C.NaNO₃

D.CaCO₃✓ Correct

Explanation

Calcium carbonate on heating will decompose into calcium oxide and carbon dioxide. Calcium oxide is a basic metal oxide whereas carbon dioxide is an acidic gas. Therefore, the correct option is d.

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