Multiple choice

Out of the following which is neutral?

  1. GeO

  2. SnO

  3. CO

  4. PbO

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Carbon monoxide (CO) is a neutral oxide because it does not react with acids or bases. In contrast, GeO and SnO are amphoteric (react with both), while PbO is predominantly basic. CO's neutrality comes from carbon's intermediate position in the periodic table.

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