MCQ
Alkyl halides can be converted into Grignard reagents by
- ABoiling them with $Mg$ ribbon in alcoholic solution
- ✓Warming them with magnesium powder in dry ether
- CRefluxing them with $MgC{l_2}$ solution
- DWarming them with $MgC{l_2}$
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$(I)$ $B + AN{O_3} \longrightarrow BN{O_3} + A$
$(II)$ $A + HCl \longrightarrow ACl + \frac{1}{2}\,{H_2}$
$(III)$ $D + ECl \longrightarrow DCl + E$
$(IV)$ $D + HN{O_3} \longrightarrow {H_2}$ gas is not evolved
(Given, $\mathrm{R}=8.3\; \mathrm{J} \mathrm{mol}^{-1} \mathrm{K}^{-1}$$, \ln \left(\frac{2}{3}\right)=0.4$ $\left.e^{-3}=4.0\right)$