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Question

In general, when metal oxides react with water, resulting solution may called as:

A
acidic
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B
basic
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C
neutral
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D
unstable
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E
colored
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Solution

The correct option is B basic
Ionic metal oxides react with water to give hydroxides (compounds containing the hydroxyl ion) and resultant solution is basic, whereas most non-metal oxides react with water to form acids and resultant solution is acidic.
For example, sodium oxide reacts with water to form sodium hydroxide which is a strong base.
Na2O+H2O2NaOH

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