Which of the following is an appropriate set of reactants for the preparation of $1-methoxy-4-nitrobenzene$ and why?

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(B) Set $(ii)$ is an appropriate set of reactants for the preparation of $1-methoxy-4-nitrobenzene$. The reaction is: $p-nitrophenoxide + CH_3Br \rightarrow 1-methoxy-4-nitrobenzene + NaBr$.
In set $(i)$,the reactant is $1-bromo-4-nitrobenzene$. Aryl halides are generally unreactive towards nucleophilic substitution reactions under ordinary conditions because the $C-X$ bond has partial double bond character due to resonance and the $sp^2$ hybridized carbon atom is more electronegative. Furthermore,$CH_3ONa$ is a strong nucleophile and base,but it cannot easily displace the halide from the aryl ring in this manner compared to the Williamson ether synthesis shown in set $(ii)$.

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Which of the following reactions will not give ether as a major product?

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Identify the product $(A)$ of the following reaction:
$C_2H_5-O-C_2H_5 + CO \xrightarrow[500 \text{ atm}]{BF_3 / 150^{\circ}C} A$

The correct statement regarding $X$ and $Y$ formed in the following reaction is
$(CH_3)_3COC_2H_5 \xrightarrow[\Delta]{HI} \text{halide } (X) + \text{alcohol } (Y)$

Which of the following ethers is gaseous at room temperature?

Give the common and $\rm {IUPAC}$ names for the following ether compounds:
$(i) \ CH_3OCH_3$
$(ii) \ C_2H_5OC_2H_5$
$(iii) \ C_6H_5OC_6H_5$
$(iv) \ CH_3OCH_2CH_2CH_3$
$(v) \ CH_3OCH(CH_3)_2$
$(vi) \ C_6H_5OCH_3$
$(vii) \ C_6H_5OCH_2CH_3$
$(viii) \ C_6H_5O(CH_2)_6CH_3$
$(ix) \ C_6H_5OCH_2CH_2CH(CH_3)_2$
$(x) \ CH_3OCH_2CH_2OCH_3$
$(xi) \ C_2H_5OCH_2CH_2OC_2H_5$
$(xii) \ CH_3OCH_2CH_2CH_2OCH_3$
$(xiii) \ CH_3OCH_2CH_2OC_2H_5$
$(xiv) \ \text{Cyclohexyl methyl ether}$

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