KEAM 2016 Physics and Chemistry Paper

(A) Electron deficient $\rightarrow \mathrm{B}_2 \mathrm{H}_6$ ( ∵ It has $3c - 2e$ structure, which shows that B-atom has electron deficient centre). (B) Saline $\rightarrow \mathrm{LiH}$ is called saline. (C) Electron precise $\rightarrow \mathrm{CH}_4$ ( ∵ It has perfect complete octet for C-atom). (D) Interstitial $\rightarrow$ CrH Here, hydrogen atoms are trapped in the interstitial sites of crystal of $\mathrm{Cr}.$ (E) Electron rich $\rightarrow \mathrm{NH}_3$, because nitrogen has lone pair of electrons in its outermost shell. Hence, correct order is (A)- (iv), (B)- (i), (c)- (ii), (D) $-(v)$, (E) - (iii)