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(A) The dehydration of alcohols in the presence of a concentrated acid catalyst like $H_2SO_4$ at high temperatures $(160-170 \ ^oC)$ results in the f

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$C_2H_5OH$

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(A) The dehydration of alcohols in the presence of a concentrated acid catalyst like $H_2SO_4$ at high temperatures $(160-170 \ ^oC)$ results in the formation of an alkene with the same number of carbon atoms.Specifically,the dehydration of ethanol $(C_2H_5OH)$ proceeds as follows:$CH_3CH_2OH \xrightarrow{conc. H_2SO_4, 160-170 \ ^oC} CH_2=CH_2 + H_2O$Thus,ethylene $(CH_2=CH_2)$ is obtained from ethanol $(C_2H_5OH)$.

Column-$I$ (Reactants)	Column-$II$ (Products)
$A$. $ROH + SOCl_2$	$i$. $RBr + NaHSO_4 + H_2O$
$B$. $ROH + PCl_5$	$ii$. $3RX + H_3PO_3$
$C$. $3ROH + PX_3$	$iii$. $RCl + SO_2 + HCl$
$D$. $ROH + NaBr + H_2SO_4$	$iv$. $RCl + POCl_3 + HCl$

Ethylene may be obtained by dehydration of which of the following with concentrated $H_2SO_4$ at $160-170 \ ^oC$?

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