Predict the major product of the following reaction sequence $:-$

How will you bring about the following conversions?
$(i)$ Ethanol to but$-1-$yne
$(ii)$ Ethane to bromoethene
$(iii)$ Propene to $1-$nitropropane
$(iv)$ Toluene to benzyl alcohol
$(v)$ Propene to propyne
$(vi)$ Ethanol to ethyl fluoride
$(vii)$ Bromomethane to propanone
$(viii)$ But$-1-$ene to but$-2-$ene
$(ix)$ $1-$Chlorobutane to $n-$octane
$(x)$ Benzene to biphenyl.

Match the following lists:

List-$I$	List-$II$
$(A)$ Benzene	$1$. Phosgene
$(B)$ Ethylene	$2$. Silver mirror
$(C)$ Acetaldehyde	$3$. Mustard gas
$(D)$ Chloroform	$4$. $(4n + 2) \pi$ electrons
	$5$. Carbylamine

Match List-$I$ with List-$II$:
| List-$I$ | List-$II$ |
| :--- | :--- |
| $A$. $C_6H_5Cl + CH_3Cl + 2Na \rightarrow C_6H_5CH_3 + 2NaCl$ | $I$. Wurtz-Fitting reaction |
| $B$. $2C_6H_5Cl + 2Na \rightarrow C_6H_5-C_6H_5 + 2NaCl$ | $II$. Fitting reaction |
| $C$. $C_6H_5N_2^+Cl^- \xrightarrow{Cu_2Cl_2} C_6H_5Cl + N_2$ | $III$. Sandmeyer reaction |
| $D$. $C_2H_5Cl + NaI \rightarrow C_2H_5I + NaCl$ | $IV$. Finkelstein reaction |

The reactions which cannot be applied to prepare an alkene by elimination are: Choose the correct answer from the options given below $:$
$A.$ $2$-bromomethylcyclohexane + $NaOEt$
$B.$ $2$-bromobutane + $KOH$ (aq.)
$C.$ $2$-bromo-$2$-methylpropane + $NaOMe$
$D.$ Phenol + $Na_2Cr_2O_7 / H_2SO_4$
$E.$ $2$-methylpropan-$2$-ol + $Cu$ at $573 \ K$

The products obtained in the above reactions $(1)$,$(2)$,and $(3)$ are: