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Match the following: Oxide - Nature (A) CO - Basic (B) BaO - Neutral (C) Al2O3 - Acidic (D) Cl2O7 - Amphoteric Which of the following is incorrect option?

1. (i) (ii) (iv)
2. (ii) (iv) (i)
3. (iv) (iii) (ii)
4. (i) (iii) (iv)

Correct answer: (i) (iii) (iv)

Solution

The incorrect option is (i) (iii) (iv) because CO is neutral, Al2O3 is amphoteric, and Cl2O7 is acidic. BaO is basic, not neutral.

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