MCQ
(image) is prepared best by the reaction


- A$(CH_3)_3 C-Br + CH_3OK \to $
- B$(CH_3)_3C-OH$ $\xrightarrow[{170{\,^o}C}]{{{H_2}S{O_4}}}$
- ✓$(CH_3)_3 COK + CH_3-Br \to $
- D$(CH_3)_2 C=CH_2$ $\xrightarrow{{Conc.\,{H_2}S{O_4}}}$

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$(1)$ Bromine water $(2)$ $\mathrm{Br}_{2}$ in $\mathrm{CS}_{2}, 273 \mathrm{~K}$ $(3)$ $\mathrm{Br}_{2} / \mathrm{FeBr}_{3}$ $(4)$ $\mathrm{Br}_{2}$ in $\mathrm{CHCl}_{3}, 273 \,\mathrm{~K}$
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