The compound which is $NOT$ formed when a mixture of $n$-butyl bromide and ethyl bromide is treated with sodium metal in the presence of dry ether is:

Match the reactions in Column-$A$ with the products in Column-$B$ and select the correct option:

Column-$A$	Column-$B$
$(1)$ $CH_3-CH_2-Cl + KOH_{(aq)} \rightarrow$	$(A)$ $1,2-\text{dichloroethane}$
$(2)$ $CH_3-CH_2-CH_2-CH_3 \xrightarrow{AlCl_3/HCl}$	$(B)$ $\text{Chloromethane}$
$(3)$ $CH_3-CH_2-Br + \text{alc. } KOH \rightarrow$	$(C)$ $\text{But-2-ene}$
$(4)$ $CH_2=CH_2 + Cl_2 \rightarrow$	$(D)$ $\text{Ethanol}$
	$(E)$ $\text{Chloroethane}$
	$(F)$ $\text{Ethene}$
	$(G)$ $\text{Isobutane}$

In the following reaction sequence,
$Br-CH_2-CH(Br)-Ph$ $\xrightarrow[2. NaNH_2]{1. Alc. KOH} X$ $\xrightarrow[4. Conc. HNO_3/H_2SO_4]{3. HgSO_4/dil. H_2SO_4, Heat} Y$
$X$ and $Y$ respectively are,

How many isomers are possible for the compound with the molecular formula $C_2BrClFI$?

Which of the following statements is false?

Match the type of reaction given in Column-$I$ with the reaction in Column-$II$.

Column-$I$ (Reactants)	Column-$II$ (Type of Reaction)
$(A)$ $C_6H_5NH_2 \xrightarrow{NaNO_2, HX, 273-278 K} C_6H_5N_2^+X^-$	$(i)$ Wurtz-Fittig reaction
$(B)$ $C_6H_5N_2^+X^- \xrightarrow{Cu_2X_2} C_6H_5X$	$(ii)$ Diazotization
$(C)$ $C_6H_6 + 2Na + RX \xrightarrow{\text{dry ether}} C_6H_5R$	$(iii)$ Sandmeyer reaction
$(D)$ $2C_6H_6 + 2Na \xrightarrow{\text{dry ether}} C_6H_5-C_6H_5$	$(iv)$ Fittig reaction