The Bohr radius of a hydrogen like species is 70.53 pm . The species and the stationary state (n) are respectively
(Given : Hydrogen atom Bohr radius is 52.9 pm )
Given below are two statements :
Statement I : The number of compounds among $\mathrm{SO}_2, \mathrm{SO}_3, \mathrm{SF}_4, \mathrm{SF}_6$ and $\mathrm{H}_2 \mathrm{~S}$ in which sulphur does not obey the Octet rule is 3 .
Statement II : Among $\left[\mathrm{H}_2 \mathrm{O}, \mathrm{ClF}_3, \mathrm{SF}_4\right],\left[\mathrm{NH}_3, \mathrm{BrF}_5, \mathrm{SF}_4\right],\left[\mathrm{BrF}_5, \mathrm{ClF}_3, \mathrm{XeF}_4\right]$ and [ $\mathrm{XeF}_4, \mathrm{ClF}_3, \mathrm{H}_2 \mathrm{O}$ ], the number of sets in which all the molecules have one lone pair of electrons on the central atom is 1 .
In the light of the above statements, choose the correct answer from the options given below :
Match List - I with List - II.
Given $V_1$ and $V_2$ are initial and final volumes respectively.
| List - I (Isothermal process) |
List - II (Expression) |
||
|---|---|---|---|
| A. | Reversible expansion | I. | $$ \mathrm{q}=0 $$ |
| B. | Free expansion | II. | $$ \mathrm{q}=\mathrm{nRT} \ln \frac{\mathrm{~V}_2}{\mathrm{~V}_1} $$ |
| C. | Irreversible Compression | III. | $$ \mathrm{w}=-\mathrm{p}_{\mathrm{ext}}\left(\mathrm{~V}_1-\mathrm{V}_2\right) $$ |
| D. | Cyclic reversible | IV. | $$ \frac{\mathrm{q}_{\mathrm{rev}}}{\mathrm{~T}}=0 $$ |
Choose the correct answer from the options given below :
Given below are two statements :
Statement I : $\quad \mathrm{H}_2 \mathrm{O}$ molecules move from the chamber 1 to chamber 2 .
Statement II : The osmotic pressure of a solution prepared by dissolving 50 mg of potassium sulphate (molar mass $=174 \mathrm{~g} / \mathrm{mol}$ ) in 2 L of water (at $27^{\circ} \mathrm{C}$ ) is 0.0107 bar. (Given: $\mathrm{R}=0.083 \mathrm{dm}^3$ bar $\mathrm{K}^{-1} \mathrm{~mol}^{-1}$ and assume complete dissociation of electrolyte)
In the light of the above statements, choose the correct answer from the options given below :
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