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Question
Which of the following metal oxides is not a base?
Options
CuO
Na2O
PbO2
MgO
MCQ
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Solution
PbO2
Explanation:
Lead dioxide (PbO2) is not a true base because it reacts with concentrated acid to produce chlorine gas alongside salt and water, instead of forming salt and water only.
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Chapter 3: Acids, Bases and Salts - Intext Question [Page 59]
