Which of the following compounds will undergo a Friedel-Crafts alkylation reaction?

List-$I$ contains various reaction sequences and List-$II$ contains different phenolic compounds. Match each entry in List-$I$ with the appropriate entry in List-$II$ and choose the correct option.

Which of the following substances releases hydrogen gas upon reacting with $Na$ metal?

Match the common names of the ethers given in Column $(I)$ with their structures in Column $(II)$ and their $\text{IUPAC}$ names in Column $(III)$.

Column $(I)$	Column $(II)$	Column $(III)$
$(A)$ Methyl isopropyl ether	$(1)$ ${C_6}{H_5}O{(CH_2)_6}CH_3$	$(i)$ $2$-Methoxypropane
$(B)$ Phenyl isopentyl ether	$(2)$ $CH_3-O-CH(CH_3)_2$	$(ii)$ Methoxyethane
$(C)$ Heptyl phenyl ether	$(3)$ ${C_6}{H_5}-O-CH_2CH_2CH(CH_3)_2$	$(iii)$ $1$-Phenoxyheptane
$(D)$ Ethyl methyl ether	$(4)$ $CH_3CH_2-O-CH_3$	$(iv)$ $1$-Methoxy$-3-$methylbutane (or $3$-Methylbutoxybenzene)

What will be the order of reactivity of the following alcohols towards concentrated $HCl$?

What is the major organic product of the following reaction?
(Image of $2-$methyl$-2,3-$dihydrobenzofuran with an $^{18}O$ atom in the ring,reacting with $H_3O^+$)