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Q.

Which of the following is a non-metal element X, whereas XO is a neutral oxide and ${XO}_{2}$ is an acidic oxide?

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a

Carbon

b

Iron

c

Zinc

d

Copper

answer is B.

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Detailed Solution

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Carbon is a non-metal element X, whereas XO is a neutral oxide and

{XO}_{2}

is an acidic oxide.
Among the 4 elements copper, carbon, zinc and iron where carbon is the non-metal. The remaining three elements are metals. One of the four categories of oxides, namely acidic oxides, basic oxides, amphoteric oxides, and neutral oxides, carbon monoxide is neutral oxide. The carbon monoxide molecule is neutral in general. Carbon has a negative charge, whereas oxygen has a positive charge. This balance of charges results in a neutral molecule. So, carbon monoxide is an oxide that is neutral. The nature of

{CO}_{2}

is acidic. Blue litmus paper that has been dampened becomes red when exposed to it. Hence, the correct option is carbon.

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