Diethyl ether is not associated with which one of these isomers?

Match each of the compounds given in Column $I$ with the reaction$(s)$ that they can undergo,given in Column $II$.
| Column $I$ | Column $II$ |
| :--- | :--- |
| $(A)$ $3-$bromobenzofuran derivative | $(p)$ Nucleophilic substitution |
| $(B)$ Benzyl alcohol | $(q)$ Elimination |
| $(C)$ Salicylaldehyde | $(r)$ Nucleophilic addition |
| $(D)$ $1-$bromo$-2-$nitrobenzene | $(s)$ Esterification with acetic anhydride |
| | $(t)$ Dehydrogenation |

Match List-$I$ with List-$II$. Choose the correct answer from the options given below:

The major product obtained in the reaction is:

The reaction of elemental sulphur with a Grignard reagent followed by acidification leads to the formation of:

Dichlorocarbene is formed by chloroform and alcoholic $KOH$. Which reaction involves this carbene?