MCQ
Hydrogen bonding does not play any role in boiling of
- A$N{H_3}$
- B${H_2}O$
- ✓$HI$
- D${C_2}{H_5}OH$
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$1.$ The state $S_1$ is
$(A)$ $1 \mathrm{~s}$ $(B)$ $2 \mathrm{~s}$ $(C)$ $2 \mathrm{p}$ $(D)$ $3 \mathrm{~s}$
$2.$ Energy of the state $S_1$ in units of the hydrogen atom ground state energy is
$(A)$ $0.75$ $(B)$ $1.50$ $(C)$ $2.25$ $(D)$ $4.50$
$3.$ The orbital angular momentum quantum number of the state $S_2$ is
$(A)$ $0$ $(B)$ $1$ $(C)$ $2$ $(D)$ $3$
Give the answer question $1,2$ and $3.$

| $LIST-I ($Precipitating reagent and conditions) |
$LIST-II ($Cation$)$ |
||
| $A.$ | $NH_4Cl + NH_4OH$ | $I.$ | $Mn^{2+}$ |
| $B.$ | $NH_4OH + Na_2CO_3$ | $II.$ | $Pb^{2+}$ |
| $C.$ | $NH_4OH + NH_4Cl + H_2S$ gas | $III.$ | $Al^{3+}$ |
| $D.$ | dilute $HCl$ | $IV.$ | $Sr^{2+}$ |