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JEE Main levelSingle correct optionDifficulty 2 of 3pt197

Which pair correctly gives an amphoteric oxide and a neutral oxide, in that order?

A $ZnO$ and $N X_{2} O$
B $CaO$ and $CO$
C $SO X_{2}$ and $NO$
D $P X_{4} O X_{10}$ and $N X_{2} O$

Answer: A

ZnO

reacts with both acids and bases, so it is amphoteric, and

N X_{2} O

is neutral. In the other pairs

CaO

is basic,

SO X_{2}

and

P X_{4} O X_{10}

are acidic, so none of them has an amphoteric first member and a neutral second member.

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