Acid neutraliser present in mucus of saliva is

Bicarbonate ion

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Thiocyanate

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Sodium acetate

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Sodium hydroxide

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Solution

The correct option is C Bicarbonate ion
Saliva is a buffering agent because of the presence of bicarbonate ions. Bicarbonate ions are basic, thus, acts against acid and results in the neutralization of acid. Hence, Option A is correct.

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