Identify the number of moles of ethene obtained when $n$ moles of $N, N, N$-triethylpropylammonium iodide is treated with moist $Ag_2O$ and then heated.

The most basic $'N'$ atom in the following molecule is:

The reaction of $N$-phenylbenzamide with $NO_2^{\oplus}$ (nitronium ion) yields which product?

Assertion $(A)$: $-NH_2$ group of aniline is ortho,para directing in electrophilic substitutions.
Reason $(R)$: $-NH_2$ group stabilises the arenium ion formed by the ortho,para attack of the electrophile.
The correct answer is

The reaction of $N,N'$-diphenylthiourea with concentrated $HCl$ upon heating is given by:
$(C_6H_5NH)_2C=S \xrightarrow{conc. HCl, Heat} A + B$
The unknown compounds $A$ and $B$ in the above reaction are:

The correct order of basic strength for the given nitrogen atoms $(x)$,$(y)$,and $(z)$ is $-$