From the following,identify the reactions that give alcohol as the product.
$(i)$ $Cyclohexylidenemethane \xrightarrow[(ii) H_2O_2/NaOH]{(i) B_2H_6}$
(ii) $Methyl \ benzoate \xrightarrow{H_2/Catalyst}$
(iii) $Acetophenone \xrightarrow{NaBH_4/MeOH}$
(iv) $2,2-Dichloropropane \xrightarrow{H_2O/NaOH}$

What is $Z$ in the following sequence of reaction?
$Z$ $\xrightarrow{PCl_5} X$ $\xrightarrow{Alc. KOH} Y$ $\xrightarrow{dil. H_2SO_4} Z$

Consider the following reaction:
Which response contains all the correct statements about this process?
$1.$ Dehydration
$2.$ $E_2$ mechanism
$3.$ Carbon skeleton migration
$4.$ Most stable alkene will form
$5.$ Single-step reaction

In the given diol,which of the following statements is correct regarding the acidity of the hydroxyl groups at $C_2$ and $C_5$?

In the above reaction,the molecular formula of glycerol increases by:

Match the chemical conversions in List-$I$ with the appropriate reagents in List-$II$ and select the correct answer using the code given below the lists:
List-$I$:
$P$. $tert$-butyl chloride $\rightarrow$ isobutylene
$Q$. Sodium $tert$-butoxide $\rightarrow$ $tert$-butyl ethyl ether
$R$. $1$-methylcyclopentene $\rightarrow$ $1$-methylcyclopentanol
$S$. $1$-methylcyclopentene $\rightarrow$ $2$-methylcyclopentanol (trans-isomer)
List-$II$:
$1$. $(i) \ Hg(OAc)_2; (ii) \ NaBH_4$
$2$. $NaOEt$
$3$. $EtBr$
$4$. $(i) \ BH_3; (ii) \ H_2O_2/NaOH$
Codes: $P \quad Q \quad R \quad S$