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Which of the following is a basic oxide of saline nature?

1. Na2O2
2. BaO2
3. Na2O
4. Fe2O3

Correct answer: Na2O

Solution

Na2O is a basic oxide because it is formed from sodium, a metal, and reacts with acids to form salts and water, exhibiting basic properties. Its saline nature comes from its ability to combine with acids to produce neutral salts.

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