A) Formic acid - Vinegar
B) Lactic acid - Milk
C) Citric acid - Lemon
D) Butyric acid - Rancid butter
Correct Answer: A
Solution :
Formic acid (also called methanolc acid) is the simplest carboxyllc acid. It is an important intermediate in chemical synthesis and occurs naturally, most notably in antvenom. Vinegar is roughly 4%-8% of acetic acid by volume, making it the main component, apart from water.
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