Calamine is used to reduce the irritating effect of ant bite/sting because it reacts with (X) released due to the bit /sting of ants with (Y) present in calamine. (X) and (Y) respectively are:

sodium hydrogen carbonate and formic acid

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formic acid and zinc carbonate

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acetic acid and common salt

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hydrochloric acid and zinc oxide

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Solution

The correct option is A sodium hydrogen carbonate and formic acid
The (X) and (Y) respectively are sodium hydrogen carbonate and formic acid.
Formic acid is present in the bite /sting of ants and sodium hydrogen carbonate is present in calamine.
Formic acid is neutralized with sodium hydrogen carbonate.

Hence, the correct option is $A$

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