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Railways PYQCBT 2 2017

RRB NTPC · Question 3

Which one of the following acids is the primary constituent of vinegar?

  1. Nitric

  2. Acetic

  3. Humic

  4. Oxalic

Show answer & explanation

Answer: (B) Acetic

Explanation

Vinegar is a dilute solution (about 4–8%) of acetic acid (ethanoic acid, CH₃COOH) in water.