03. ELECTROCHEMISTRY
ELECTROCHEMISTRY

19829 The negative \(Zn\) pole of a Daniel cell, sending a constant current through a circuit, decreases in mass by \(0.13\,g\) in \(30\) minutes. If the electrochemical equivalent of \(Zn\) and \(Cu\) are \(32.5\) and \(31.5\) respectively, the increase in the mass of the positive \(Cu\) pole in this time is .............. \(\mathrm{g}\)

1 \(0.126\)
2 \(0.190\)
3 \(0.141\)
4 \(0.242\)
ELECTROCHEMISTRY

19830 When a copper voltameter is connected with a battery of \(e.m.f.\) \(12\, volts\). \(2\, gm\) of copper is deposited in \(30\) minutes. If the same voltameter is connected across a \(6 \,volt\) battery, then the mass of copper deposited in \(45\) minutes would be ............. \(\mathrm{gm}\)

1 \(1\)
2 \(1.5\)
3 \(2\)
4 \(2.5\)
ELECTROCHEMISTRY

19831 The value of current required to deposit \(0.972\, gm\) of chromium in \(3\) hours if the \(E.C.E.\) of chromium is \(0.00018\, gm\) per coulomb, is ............ \(\mathrm{amp}\)

1 \(1\)
2 \(1.5\)
3 \(0.5\)
4 \(2\)
ELECTROCHEMISTRY

19832 The resistance of a cell does not depend on

1 Current drawn from the cell
2 Temperature of electrolyte
3 Concentration of electrolyte
4 The \(e.m.f.\) of the cell
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
ELECTROCHEMISTRY

19829 The negative \(Zn\) pole of a Daniel cell, sending a constant current through a circuit, decreases in mass by \(0.13\,g\) in \(30\) minutes. If the electrochemical equivalent of \(Zn\) and \(Cu\) are \(32.5\) and \(31.5\) respectively, the increase in the mass of the positive \(Cu\) pole in this time is .............. \(\mathrm{g}\)

1 \(0.126\)
2 \(0.190\)
3 \(0.141\)
4 \(0.242\)
ELECTROCHEMISTRY

19830 When a copper voltameter is connected with a battery of \(e.m.f.\) \(12\, volts\). \(2\, gm\) of copper is deposited in \(30\) minutes. If the same voltameter is connected across a \(6 \,volt\) battery, then the mass of copper deposited in \(45\) minutes would be ............. \(\mathrm{gm}\)

1 \(1\)
2 \(1.5\)
3 \(2\)
4 \(2.5\)
ELECTROCHEMISTRY

19831 The value of current required to deposit \(0.972\, gm\) of chromium in \(3\) hours if the \(E.C.E.\) of chromium is \(0.00018\, gm\) per coulomb, is ............ \(\mathrm{amp}\)

1 \(1\)
2 \(1.5\)
3 \(0.5\)
4 \(2\)
ELECTROCHEMISTRY

19832 The resistance of a cell does not depend on

1 Current drawn from the cell
2 Temperature of electrolyte
3 Concentration of electrolyte
4 The \(e.m.f.\) of the cell
ELECTROCHEMISTRY

19829 The negative \(Zn\) pole of a Daniel cell, sending a constant current through a circuit, decreases in mass by \(0.13\,g\) in \(30\) minutes. If the electrochemical equivalent of \(Zn\) and \(Cu\) are \(32.5\) and \(31.5\) respectively, the increase in the mass of the positive \(Cu\) pole in this time is .............. \(\mathrm{g}\)

1 \(0.126\)
2 \(0.190\)
3 \(0.141\)
4 \(0.242\)
ELECTROCHEMISTRY

19830 When a copper voltameter is connected with a battery of \(e.m.f.\) \(12\, volts\). \(2\, gm\) of copper is deposited in \(30\) minutes. If the same voltameter is connected across a \(6 \,volt\) battery, then the mass of copper deposited in \(45\) minutes would be ............. \(\mathrm{gm}\)

1 \(1\)
2 \(1.5\)
3 \(2\)
4 \(2.5\)
ELECTROCHEMISTRY

19831 The value of current required to deposit \(0.972\, gm\) of chromium in \(3\) hours if the \(E.C.E.\) of chromium is \(0.00018\, gm\) per coulomb, is ............ \(\mathrm{amp}\)

1 \(1\)
2 \(1.5\)
3 \(0.5\)
4 \(2\)
ELECTROCHEMISTRY

19832 The resistance of a cell does not depend on

1 Current drawn from the cell
2 Temperature of electrolyte
3 Concentration of electrolyte
4 The \(e.m.f.\) of the cell
ELECTROCHEMISTRY

19829 The negative \(Zn\) pole of a Daniel cell, sending a constant current through a circuit, decreases in mass by \(0.13\,g\) in \(30\) minutes. If the electrochemical equivalent of \(Zn\) and \(Cu\) are \(32.5\) and \(31.5\) respectively, the increase in the mass of the positive \(Cu\) pole in this time is .............. \(\mathrm{g}\)

1 \(0.126\)
2 \(0.190\)
3 \(0.141\)
4 \(0.242\)
ELECTROCHEMISTRY

19830 When a copper voltameter is connected with a battery of \(e.m.f.\) \(12\, volts\). \(2\, gm\) of copper is deposited in \(30\) minutes. If the same voltameter is connected across a \(6 \,volt\) battery, then the mass of copper deposited in \(45\) minutes would be ............. \(\mathrm{gm}\)

1 \(1\)
2 \(1.5\)
3 \(2\)
4 \(2.5\)
ELECTROCHEMISTRY

19831 The value of current required to deposit \(0.972\, gm\) of chromium in \(3\) hours if the \(E.C.E.\) of chromium is \(0.00018\, gm\) per coulomb, is ............ \(\mathrm{amp}\)

1 \(1\)
2 \(1.5\)
3 \(0.5\)
4 \(2\)
ELECTROCHEMISTRY

19832 The resistance of a cell does not depend on

1 Current drawn from the cell
2 Temperature of electrolyte
3 Concentration of electrolyte
4 The \(e.m.f.\) of the cell