Q. Which of the following substance’s smell is similar to Ethanoic acid?
Answer: Vinegar
Notes: Acetic acid (CH3COOH) also known as ethanoic acid, is an organic chemical compound best recognized for giving vinegar its sour taste and pungent smell. Vinegar is roughly 3–9% acetic acid by volume, making acetic acid the main component of vinegar apart from water.

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