Electrolyte, electrode reactions and potential of a dry cell

1. A.
   Paste of ${MnO}_{2}$
2. B.
   Paste of ${NH}_{4}Cl$
3. C.
   Starch
4. D.
   Paste of ${ZnCl}_{2}$

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1. A.
   Ammonia
2. B.
   Hydrogen
3. C.
   Hydrogen chloride
4. D.
   Chlorine

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1. A.
   $\frac{- \Delta G^{\circ}}{F}$
2. B.
   $\frac{- \Delta G^{\circ}}{2F}$
3. C.
   $\frac{- \Delta G^{\circ}}{3F}$
4. D.
   $\frac{- \Delta G^{\circ}}{4F}$

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1. A.
   ${Zn}_{(s)}$ is oxidised to ${Zn}^{+ 2}\ _{(aq)}$
2. B.
   $Zn_{(aq)}^{+ 2}$ is reduced to ${Zn}_{(s)}$
3. C.
   ${MnO}_{2(s)}$ is reduced to ${Mn}_{2}O_{3(s)}$
4. D.
   ${Mn}_{2}O_{3(s)}$ is oxidised to ${MnO}_{2(s)}$

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1. A.
   Potassium hydroxide
2. B.
   Sulphuric acid
3. C.
   Ammonium chloride and zinc chloride
4. D.
   Manganese dioxide

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1. A.
   Increases by 1
2. B.
   decreases by 1
3. C.
   Increases by 2
4. D.
   decreases by 2

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