MCQ
Boron cannot form which one of the following anions ?
- ✓$BF_6^{3-}$
- B$BH_4^-$
- C$B(OH)_4^-$
- D$BO_2^-$
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Above reaction is an example of $1,4$ -elimination. Predict the product.
| List$-I$ | List$-II$ |
| $A$ Coke | $I$ Carbon atoms are $sp ^3$ hybridised |
| $B$ Diamond | $II$ Used as a dry lubricant |
| $C$ Fullerene | $III$ Used as a reducing agent |
| $D$ Graphite | $IV$ Cage like molecules |
Choose the correct answer from the options given below :
$Hex - 3 - ynal\xrightarrow[\begin{subarray}{l}
(ii)\,PB{r_3} \\
(i)\,Mg/ether \\
(i)\,C{O_2}/{H_3}{O^ + }
\end{subarray} ]{{(i)\,NaB{H_4}}}\,?$