Q.1
Essential oil is mainly comprised of
- Composition of Essential Oils: Essential oils (volatile aromatic plant oils) are secondary metabolites synthesized mainly via the mevalonate and non-mevalonate (MEP) pathways.
- Dominant Components: Composed predominantly of monoterpenes ($C_{10}H_{16}$, 10-carbon hydrocarbons formed from two isoprene units) and their oxygenated derivatives (e.g., limonene, menthol, geraniol), followed by sesquiterpenes ($C_{15}$).
- Diterpenes: Higher molecular weight non-volatile terpenes ($C_{20}$), generally not present in steam-distilled volatile oils. (Correct answer: Option 1)
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