Iodoform can be prepared from all,except

Which compound decolorizes aqueous bromine and gives white fumes of $HCl$ on reaction with $PCl_5$?

Lucas test is used for:

$A$ compound is soluble in concentrated ${H_2SO_4}$. It does not decolorize a solution of bromine in ${CCl_4}$. However,it is oxidized by chromic anhydride in aqueous sulfuric acid within two seconds,changing the color of the solution from orange to blue,green,and finally opaque. What does the original compound contain?

Product $(B)$ of the given reaction is:

An alcohol $X$ $(C_5H_{12}O)$ when reacted with conc. $HCl$ and anhydrous $ZnCl_2$ produces turbidity instantly. The alcohol $X$ can be prepared from which of the following reactions?