X + HCl xrightarrow[text{Addition}]{text{Anhy | vedclass

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(D) The reaction $X + HCl \xrightarrow{AlCl_3} C_2H_5Cl$ represents the addition of $HCl$ to ethene $(X = C_2H_4)$.The reaction $Y \xrightarrow{ZnCl_2

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$Ca(OH)_2 + CaOCl_2, 60 ^oC$

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(D) The reaction $X + HCl \xrightarrow{AlCl_3} C_2H_5Cl$ represents the addition of $HCl$ to ethene $(X = C_2H_4)$.The reaction $Y \xrightarrow{ZnCl_2/HCl} C_2H_5Cl$ represents the substitution of an alcohol $(Y = C_2H_5OH)$ with $HCl$ (Lucas reagent).To convert ethanol $(Y)$ to ethene $(X)$,dehydration is required,but the question asks for the conversion of $Y$ to $X$ via heating with specific reagents.Looking at the options,$Ca(OH)_2 + CaOCl_2$ (bleaching powder) is used for the haloform reaction or oxidation,but specifically,ethanol $(C_2H_5OH)$ reacts with bleaching powder to form chloroform $(CHCl_3)$.However,based on standard textbook reactions,the conversion of $Y$ $(C_2H_5OH)$ to $X$ $(C_2H_4)$ is typically done by heating with conc. $H_2SO_4$. Given the options,this question appears to be testing the haloform reaction or specific industrial conversions. Option $D$ is the standard reagent for the haloform reaction.

$X + HCl$ $\xrightarrow[\text{Addition}]{\text{Anhy. } AlCl_3} C_2H_5Cl \xleftarrow[\text{Substitution}]{\text{Anhy. } ZnCl_2/HCl} Y$. The conversion of $Y$ to $X$ can be achieved by heating with .......... at .......... temperature.

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