MCQ
Diazo-coupling is useful to prepare some
- ✓Dyes
- BProteins
- CPesticides
- DVitamins

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$4s$ $3d$

[Given : mass of electron $=9.1 \times 10^{-31} \mathrm{~kg}$, Plank's constant $(\mathrm{h})=6.626 \times 10^{-34} \mathrm{JS}$ ]
(Value of $\pi=3.14$ )