State PCS PYQPrelims 2021

UPPCS · வினா 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
விடையைக் காட்டு & விளக்கம்

விடை: (C) Souring of milk - Nitric acid

விளக்கம்

Milk sours due to lactic acid produced by bacteria.