
- A$Ph -OH > CH_3 -O -CH_3 > CH_3 -OH$
- ✓$CH_3 -O -CH_3 > Ph -OH > CH_3OH$
- C$CH_3 -OH > CH_3 -O -CH_3 > Ph -OH$
- D$CH_3 -O -CH_3 > CH_3OH > Ph -OH$

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What will be the electrode potential at $pH = 3$
$(A)\, n=4,l=1$ $(B)\, n=4,l=0$
$(C) \,n=3,l=2$ $(D)\, n=3,l=1$
can be placed in order of increasing energy as :
[$A$] The work done on the gas is maximum when it is compressed irreversibly from ( $\mathrm{p}_2, \mathrm{~V}_2$ ) to ( $\mathrm{p}_1, \mathrm{~V}_1$ ) against constant pressure $\mathrm{pl}_1$
[$B$] The work done by the gas is less when it is expanded reversibly from $V_1$ to $V_2$ under adiabatic conditions as compared to that when expanded reversibly from $V_1$ to $V_2$ under isothermal conditions
[$C$] The change in internal energy of the gas is ($i$) zero, if it is expanded reversibly with $T_1=T_2$, and ($ii$) positive, if it is expanded reversibly under adiabatic conditions with $T_1 \neq T_2$
[$D$] If the expansion is carried out freely, it is simultaneously both isothermal as well as adiabatic