CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323802
Which of the following does not represent the natural source of the corresponding acids?
1 Formic acid : Red ant
2 Acetic acid : Vinegar
3 Butyric acid: Rancid butter
4 Isobutyric acid : Automobile exhausts
Explanation:
Automobile exhausts are artificial source of isobutyric acid.