MCQ
$R.Q.$ is represented by
- A$\frac{C}{N}$
- ✓$\frac{{C{O_2}}}{{{O_2}}}$
- C$\frac{{{O_2}}}{{C{O_2}}}$
- D$\frac{N}{C}$
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$I.$ cotton $II.$ coriander
$III.$ Larkspur
Select the right option