WBCS.LIVE practice question

Which acid is primarily responsible for the sour taste of curd (yogurt)?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. Citric acid
  2. Acetic acid
  3. Lactic acid
  4. Oxalic acid

Correct answer and explanation

Correct answer: Lactic acid

Explanation: āœ… Correct Answer: C) Lactic acid šŸ“š Explanation: Lactic acid is produced during the fermentation of milk by Lactobacillus bacteria, which convert lactose sugar into acid. This process thickens the milk proteins and gives curd its characteristic tart flavor and texture. Lactic acid also acts as a natural preservative by inhibiting the growth of harmful spoilage bacteria.