Which among the following is NOT allylic halide?

The correct order of reactivity for reactions involving cleavage of $\mathrm{C}-\mathrm{Cl}$ bond in following compounds is

Which of the following is correct decreasing order of boiling point of compounds?

Identify the number of moles of ethene obtained when n moles of $\mathrm{N}, \mathrm{N}, \mathrm{N}$-triethylpropylammonium iodide is treated with moist $\mathrm{Ag}_2 \mathrm{O}$ and then heated.