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Which of the following gases is not acidic?
...

Which of the following gases is not acidic?

A.

$SO_{3}$

B.

$NO_{2}$

C.

$Co_{2}$

D.

CO

View answer & explanation

Correct answer is D

The compound CO is treated as a neutral oxide, though in truth, it is slightly acidic. Regardless of this, within the options supplied, CO is the best option available.

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