MCQ
Stereoisomer possible for following compound


- ✓$8$
- B$16$
- C$32$
- D$64$

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$C{H_3}C{H_2}C{H_2}OH \xrightarrow{PCl_3}A\xrightarrow{Alco.KOH}B$
$\Delta E = - 2.0 \times {10^{ - 18}}\,J\left( {\frac{1}{{n_2^2}} - \frac{1}{{n_1^2}}} \right)$
the wavelength of the light that must be absorbed to excite hydrogen electron from level $n\, = 1$ to level $n\, = 2$ will be: $(h\, = 6.625\times10^{-34}\, J\,s,\, C\, = 3\times10^8\, m\,s^{-1})$