The correct order of reactivity of $\mathrm{CH}_3 \mathrm{Br}$ in methanol with the following nucleophiles is
$\mathrm{F}^{-}, \mathrm{I}^{-}, \mathrm{C}_2 \mathrm{H}_5 \mathrm{O}^{-}$and $\mathrm{C}_6 \mathrm{H}_5 \mathrm{O}^{-}$
Two p-block elements X and Y form fluorides of the type $\mathrm{EF}_3$. The fluoride compound $\mathrm{XF}_3$ is a Lewis acid and $\mathrm{YF}_3$ is a Lewis base. The hybridizations of the central atoms of $\mathrm{XF}_3$ and $\mathrm{YF}_3$ respectively are
A first row transition metal $(\mathrm{M})$ does not liberate $\mathrm{H}_2$ gas from dilute HCl .1 mol of aqueous solution of $\mathrm{MSO}_4$ is treated with excess of aqueous KCN and then $\mathrm{H}_2 \mathrm{~S}(\mathrm{~g})$ is passed through the solution. The amount of MS (metal sulphide) formed from the above reaction is $\_\_\_\_$ mol.
$$ \text { Match the LIST-I with LIST-II } $$
| List-I Thermodynamic Process | List-II Magnitude in kJ | ||
| A. | Work done in reversible, isothermal expansion of 2 mol of ideal gas from |
I. | 4 |
| B. | Work done in irreversible isothermal expansion of 1 mol ideal gas from |
II. | 11.5 |
| C. | Change in internal energy for adiabatic expansion of a 1 mol ideal gas with change of temperature |
III. | 6 |
| D. | Change in enthalpy at constant pressure of 1 mol ideal gas with change of temperature |
IV. | 7 |
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