MCQ
The enolic form of acetone contains
- ✓$9$ sigma bonds, $1$ pi bond and $2$ lone pairs
- B$8$ sigma bonds, $ 2$ pi bonds and $2$ lone pairs
- C$10$ sigma bonds, $1$ pi bond and $1$ lone pair
- D$9$ sigma bonds, $2$pi bonds and $1$ lone pair
has $9$$\sigma$, $1$ and $2$ lone pairs.
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$C{H_3} - C \equiv C - H\xrightarrow{{NaN{H_2}}}\xrightarrow{{C{H_3} - I}}(A)\xrightarrow{{Li/liq\,N{H_2}}}(B)$
$C{H_3} - C \equiv C - H\xrightarrow{{NaN{H_2}}}\xrightarrow{{C{H_3} - I}}(A)\xrightarrow[{Pd.CaC{O_3}}]{{{H_2}}}(C)$
[Use: $\left.\mathrm{R}=8.3 \,\mathrm{~J} \,\mathrm{~mol}^{-1}\, \mathrm{~K}^{-1}\right]$
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The total number of structures/compounds which possess asymmetric carbon atoms is $....$