p -Block elements - ll — Chemistry STD 12 Science — Question

$(A)$ Dinitrogen is a diatomic gas which acts like an inert gas at room temperature.

$(B)$ The common oxidation states of these elements are $-3,+3$ and +5 .

$(C)$ Nitrogen has unique ability to form $\mathrm{p} \pi-\mathrm{p} \pi$ multiple bonds.

$(D)$ The stability of +$5$ oxidation states increases down the group.

$(E)$ Nitrogen shows a maximum covalency of $6$.

Choose the correct answer from the options given below.

$(i)$ Neither with Fehling's solution nor with Tollen's reagent

$(ii)$ Only with Tollen's reagent but not with Fehling's solution

$(iii)$ With both Tollen's reagent and Fehling's solution. If they contained either ethanal (acetaldehyde) or propanone (acetone) or benzal (benzaldehyde), which bottle contained which