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					 Spoilage of oil can be detected by which fatty acid?
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                        - Oleic acid
- Linolenic acid
- Linoleic acid
- Erucic acid
 
Correct Option: D
Erucic acid is a monounsaturated omega-9 fatty acid, denoted 22 : 1 ω-9. It is prevalent in rapeseed, wallflower seed, and mustard seed, making up 40 to 50 percent of their oils. Erucic acid is also known as cis- 13-docosenoic acid and the trans isomer is known as brassidic acid.
 
	