[Figure] $\xrightarrow[{Oxidation}]{{Vigorous}}\,X\,\xrightarrow[{Heating}]{{Dry}}Z$
Vigorous Oxidation $=$ તિવ્ર ઓક્સિડેશન
Dry Heating $=$ સૂકું,ગરમી
$C{H_3}C{H_2}OH\xrightarrow{{P + {I_2}}}A\xrightarrow[{ether}]{{Mg}} $ $B\xrightarrow{{HCHO}}C\xrightarrow{{{H_2}O}}D$