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UPPSC PCS 2025 · Question 123 of 150

Which of the following pairs is/are NOT correctly matched ? Acid Acid found in 1. Lactic acid Curd 2. Tartaric acid Grapes 3. Acetic acid Potato Select the correct answer from the code given below: Code:

General Knowledge

  1. AOnly 1
  2. BOnly 3Correct
  3. C1 and 2
  4. D2 and 3

Answer: B. Only 3

Explanation

Let us verify each pair: Lactic acid – Curd: Correct. Lactic acid is produced by the fermentation of lactose (milk sugar) by Lactobacillus bacteria, giving curd its sour taste.

Source: selfstudywala.com UPPCS Prelims 2025 GS Paper 1 detailed solution (based on UPPCS official answer key)

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