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State PCS PYQPrelims 2021

UPPCS · Question 86

Which of the following is NOT correctly matched?

  1. Acid present in vinegar - Acetic acid
  2. Compound present in bones - Calcium phosphate
  3. Souring of milk - Nitric acid
  4. Acid present in gastric juice - Hydrochloric acid
Show answer & explanation

Answer: (C) Souring of milk - Nitric acid

Explanation

Milk sours due to lactic acid produced by bacteria.