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Question

In which of the following cells salt bridge is not needed ?

A
Pb|PbSO4(s)|H2SO4|PbO2(s)|Pb
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B
Cd|CdO(s)|KOH(aq)|NiO2(s)|Ni
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C
Fe(s)|FeO(s)|KOH(aq).Ni2O3(s)|Ni
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D
Zn|ZnSO4||CuSO4|Cu
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Solution

The correct options are
A Pb|PbSO4(s)|H2SO4|PbO2(s)|Pb
B Cd|CdO(s)|KOH(aq)|NiO2(s)|Ni
C Fe(s)|FeO(s)|KOH(aq).Ni2O3(s)|Ni
2014439_256636_ans_b067c92657294cfa84905a81edc604df.jpg

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