03. ELECTROCHEMISTRY
ELECTROCHEMISTRY

19942 Three faradays of electricity are passed through molten \(A{l_2}{O_3}\), aqueous solution of \(CuS{O_4}\) and molten \(NaCl\) taken in different electrolytic cells. The amount of \(Al,\,Cu\) and \(Na\) deposited at the cathodes will be in the ratio of

1 \(1 \) mole : \(2 \) mole :\( 3\)  mole
2 \(3\)  mole : \(2\)  mole : \(1\) mole
3 \(1\)  mole : \( 1.5 \) mole : \(3\)  mole
4 \(1.5 \) mole : \(2\) mole : \(3\) mole
ELECTROCHEMISTRY

19943 An electrolytic cell contains a solution of \(A{g_2}S{O_4}\) and have platinum electrodes. A current is passed until \(1.6\,gm\) of \({O_2}\) has been liberated at anode. The amount of silver deposited at cathode would be ............. \(\mathrm{gm}\)

1 \(107.88\)
2 \(1.6\)
3 \(0.8\)
4 \(21.60\)
ELECTROCHEMISTRY

19944 The aqueous solution of which of the following decomposes on passing electric current

1 Canesugar
2 Urea
3 Methanol
4 Potassium iodide
ELECTROCHEMISTRY

19945 The number of Faradays needed to reduce \( 4\)  gram equivalents of \(C{u^{ + + }}\) to \(Cu\) metal will be

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

19946 When electricity is passed through the solution of \(AlC{l_3},\,\,13.5\,\,gm\) of \(Al\) are deposited. The number of Faraday must be

1 \(0.50\)
2 \(1.00\)
3 \(1.50\)
4 \(2.00\)
ELECTROCHEMISTRY

19942 Three faradays of electricity are passed through molten \(A{l_2}{O_3}\), aqueous solution of \(CuS{O_4}\) and molten \(NaCl\) taken in different electrolytic cells. The amount of \(Al,\,Cu\) and \(Na\) deposited at the cathodes will be in the ratio of

1 \(1 \) mole : \(2 \) mole :\( 3\)  mole
2 \(3\)  mole : \(2\)  mole : \(1\) mole
3 \(1\)  mole : \( 1.5 \) mole : \(3\)  mole
4 \(1.5 \) mole : \(2\) mole : \(3\) mole
ELECTROCHEMISTRY

19943 An electrolytic cell contains a solution of \(A{g_2}S{O_4}\) and have platinum electrodes. A current is passed until \(1.6\,gm\) of \({O_2}\) has been liberated at anode. The amount of silver deposited at cathode would be ............. \(\mathrm{gm}\)

1 \(107.88\)
2 \(1.6\)
3 \(0.8\)
4 \(21.60\)
ELECTROCHEMISTRY

19944 The aqueous solution of which of the following decomposes on passing electric current

1 Canesugar
2 Urea
3 Methanol
4 Potassium iodide
ELECTROCHEMISTRY

19945 The number of Faradays needed to reduce \( 4\)  gram equivalents of \(C{u^{ + + }}\) to \(Cu\) metal will be

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

19946 When electricity is passed through the solution of \(AlC{l_3},\,\,13.5\,\,gm\) of \(Al\) are deposited. The number of Faraday must be

1 \(0.50\)
2 \(1.00\)
3 \(1.50\)
4 \(2.00\)
ELECTROCHEMISTRY

19942 Three faradays of electricity are passed through molten \(A{l_2}{O_3}\), aqueous solution of \(CuS{O_4}\) and molten \(NaCl\) taken in different electrolytic cells. The amount of \(Al,\,Cu\) and \(Na\) deposited at the cathodes will be in the ratio of

1 \(1 \) mole : \(2 \) mole :\( 3\)  mole
2 \(3\)  mole : \(2\)  mole : \(1\) mole
3 \(1\)  mole : \( 1.5 \) mole : \(3\)  mole
4 \(1.5 \) mole : \(2\) mole : \(3\) mole
ELECTROCHEMISTRY

19943 An electrolytic cell contains a solution of \(A{g_2}S{O_4}\) and have platinum electrodes. A current is passed until \(1.6\,gm\) of \({O_2}\) has been liberated at anode. The amount of silver deposited at cathode would be ............. \(\mathrm{gm}\)

1 \(107.88\)
2 \(1.6\)
3 \(0.8\)
4 \(21.60\)
ELECTROCHEMISTRY

19944 The aqueous solution of which of the following decomposes on passing electric current

1 Canesugar
2 Urea
3 Methanol
4 Potassium iodide
ELECTROCHEMISTRY

19945 The number of Faradays needed to reduce \( 4\)  gram equivalents of \(C{u^{ + + }}\) to \(Cu\) metal will be

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

19946 When electricity is passed through the solution of \(AlC{l_3},\,\,13.5\,\,gm\) of \(Al\) are deposited. The number of Faraday must be

1 \(0.50\)
2 \(1.00\)
3 \(1.50\)
4 \(2.00\)
ELECTROCHEMISTRY

19942 Three faradays of electricity are passed through molten \(A{l_2}{O_3}\), aqueous solution of \(CuS{O_4}\) and molten \(NaCl\) taken in different electrolytic cells. The amount of \(Al,\,Cu\) and \(Na\) deposited at the cathodes will be in the ratio of

1 \(1 \) mole : \(2 \) mole :\( 3\)  mole
2 \(3\)  mole : \(2\)  mole : \(1\) mole
3 \(1\)  mole : \( 1.5 \) mole : \(3\)  mole
4 \(1.5 \) mole : \(2\) mole : \(3\) mole
ELECTROCHEMISTRY

19943 An electrolytic cell contains a solution of \(A{g_2}S{O_4}\) and have platinum electrodes. A current is passed until \(1.6\,gm\) of \({O_2}\) has been liberated at anode. The amount of silver deposited at cathode would be ............. \(\mathrm{gm}\)

1 \(107.88\)
2 \(1.6\)
3 \(0.8\)
4 \(21.60\)
ELECTROCHEMISTRY

19944 The aqueous solution of which of the following decomposes on passing electric current

1 Canesugar
2 Urea
3 Methanol
4 Potassium iodide
ELECTROCHEMISTRY

19945 The number of Faradays needed to reduce \( 4\)  gram equivalents of \(C{u^{ + + }}\) to \(Cu\) metal will be

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

19946 When electricity is passed through the solution of \(AlC{l_3},\,\,13.5\,\,gm\) of \(Al\) are deposited. The number of Faraday must be

1 \(0.50\)
2 \(1.00\)
3 \(1.50\)
4 \(2.00\)
ELECTROCHEMISTRY

19942 Three faradays of electricity are passed through molten \(A{l_2}{O_3}\), aqueous solution of \(CuS{O_4}\) and molten \(NaCl\) taken in different electrolytic cells. The amount of \(Al,\,Cu\) and \(Na\) deposited at the cathodes will be in the ratio of

1 \(1 \) mole : \(2 \) mole :\( 3\)  mole
2 \(3\)  mole : \(2\)  mole : \(1\) mole
3 \(1\)  mole : \( 1.5 \) mole : \(3\)  mole
4 \(1.5 \) mole : \(2\) mole : \(3\) mole
ELECTROCHEMISTRY

19943 An electrolytic cell contains a solution of \(A{g_2}S{O_4}\) and have platinum electrodes. A current is passed until \(1.6\,gm\) of \({O_2}\) has been liberated at anode. The amount of silver deposited at cathode would be ............. \(\mathrm{gm}\)

1 \(107.88\)
2 \(1.6\)
3 \(0.8\)
4 \(21.60\)
ELECTROCHEMISTRY

19944 The aqueous solution of which of the following decomposes on passing electric current

1 Canesugar
2 Urea
3 Methanol
4 Potassium iodide
ELECTROCHEMISTRY

19945 The number of Faradays needed to reduce \( 4\)  gram equivalents of \(C{u^{ + + }}\) to \(Cu\) metal will be

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

19946 When electricity is passed through the solution of \(AlC{l_3},\,\,13.5\,\,gm\) of \(Al\) are deposited. The number of Faraday must be

1 \(0.50\)
2 \(1.00\)
3 \(1.50\)
4 \(2.00\)