Electrochemical Cells or Galvanic Cells
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CHXII03:ELECTROCHEMISTRY

330082 The purpose of platinising the platinum electrode in the hydrogen electrode is to

1 Catalyse the combination of hydrogen and oxygen to form water
2 Adsorb hydrogen
3 Adsorb oxygen
4 To prevent the equilibrium between \({{\rm{H}}^{\rm{ + }}}\,\,{\rm{and}}\,\,{{\rm{H}}_{\rm{2}}}\)
CHXII03:ELECTROCHEMISTRY

330083 Assertion :
For a cell reaction,
\({\text{Z}}{{\text{n}}_{{\text{(s)}}}}{\text{ + Cu}}_{{\text{(aq)}}}^{{\text{2 + }}} \to {\text{Zn}}_{{\text{(aq)}}}^{{\text{2 + }}}{\text{ + C}}{{\text{u}}_{{\text{(s)}}}}{\text{;}}\)
at the equilibrium, voltmeter gives zero reading.
Reason :
At the equilibrium, there is no change in the concentration of \(\mathrm{Cu}^{2+}\) and \(\mathrm{Zn}^{2+}\) ions.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXII03:ELECTROCHEMISTRY

330084 Assertion :
Absolute value of \({\rm{E}}_{{\rm{red}}}^{\rm{o}}\) of an electrode cannot be determined.
Reason :
Neither oxidation nor reduction can takes place alone.

1 If both the assertion and reason are true and reason is a true explanation of the assertion
2 If both the assertion and reason are true but the reason is not the correct explanation of assertion
3 If the assertion is true but reason is false
4 If assertion is false but reason is true.
CHXII03:ELECTROCHEMISTRY

330085 A hydrogen gas electrode is made by dipping platinum wire in a solution of HCl of pH = 10 and by passing hydrogen gas around the platinum wire at one atm pressure. The oxidation potential of electrode would be

1 1.18 V
2 0.059 V
3 0.59 V
4 0.118 V
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CHXII03:ELECTROCHEMISTRY

330082 The purpose of platinising the platinum electrode in the hydrogen electrode is to

1 Catalyse the combination of hydrogen and oxygen to form water
2 Adsorb hydrogen
3 Adsorb oxygen
4 To prevent the equilibrium between \({{\rm{H}}^{\rm{ + }}}\,\,{\rm{and}}\,\,{{\rm{H}}_{\rm{2}}}\)
CHXII03:ELECTROCHEMISTRY

330083 Assertion :
For a cell reaction,
\({\text{Z}}{{\text{n}}_{{\text{(s)}}}}{\text{ + Cu}}_{{\text{(aq)}}}^{{\text{2 + }}} \to {\text{Zn}}_{{\text{(aq)}}}^{{\text{2 + }}}{\text{ + C}}{{\text{u}}_{{\text{(s)}}}}{\text{;}}\)
at the equilibrium, voltmeter gives zero reading.
Reason :
At the equilibrium, there is no change in the concentration of \(\mathrm{Cu}^{2+}\) and \(\mathrm{Zn}^{2+}\) ions.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXII03:ELECTROCHEMISTRY

330084 Assertion :
Absolute value of \({\rm{E}}_{{\rm{red}}}^{\rm{o}}\) of an electrode cannot be determined.
Reason :
Neither oxidation nor reduction can takes place alone.

1 If both the assertion and reason are true and reason is a true explanation of the assertion
2 If both the assertion and reason are true but the reason is not the correct explanation of assertion
3 If the assertion is true but reason is false
4 If assertion is false but reason is true.
CHXII03:ELECTROCHEMISTRY

330085 A hydrogen gas electrode is made by dipping platinum wire in a solution of HCl of pH = 10 and by passing hydrogen gas around the platinum wire at one atm pressure. The oxidation potential of electrode would be

1 1.18 V
2 0.059 V
3 0.59 V
4 0.118 V
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CHXII03:ELECTROCHEMISTRY

330082 The purpose of platinising the platinum electrode in the hydrogen electrode is to

1 Catalyse the combination of hydrogen and oxygen to form water
2 Adsorb hydrogen
3 Adsorb oxygen
4 To prevent the equilibrium between \({{\rm{H}}^{\rm{ + }}}\,\,{\rm{and}}\,\,{{\rm{H}}_{\rm{2}}}\)
CHXII03:ELECTROCHEMISTRY

330083 Assertion :
For a cell reaction,
\({\text{Z}}{{\text{n}}_{{\text{(s)}}}}{\text{ + Cu}}_{{\text{(aq)}}}^{{\text{2 + }}} \to {\text{Zn}}_{{\text{(aq)}}}^{{\text{2 + }}}{\text{ + C}}{{\text{u}}_{{\text{(s)}}}}{\text{;}}\)
at the equilibrium, voltmeter gives zero reading.
Reason :
At the equilibrium, there is no change in the concentration of \(\mathrm{Cu}^{2+}\) and \(\mathrm{Zn}^{2+}\) ions.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXII03:ELECTROCHEMISTRY

330084 Assertion :
Absolute value of \({\rm{E}}_{{\rm{red}}}^{\rm{o}}\) of an electrode cannot be determined.
Reason :
Neither oxidation nor reduction can takes place alone.

1 If both the assertion and reason are true and reason is a true explanation of the assertion
2 If both the assertion and reason are true but the reason is not the correct explanation of assertion
3 If the assertion is true but reason is false
4 If assertion is false but reason is true.
CHXII03:ELECTROCHEMISTRY

330085 A hydrogen gas electrode is made by dipping platinum wire in a solution of HCl of pH = 10 and by passing hydrogen gas around the platinum wire at one atm pressure. The oxidation potential of electrode would be

1 1.18 V
2 0.059 V
3 0.59 V
4 0.118 V
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CHXII03:ELECTROCHEMISTRY

330082 The purpose of platinising the platinum electrode in the hydrogen electrode is to

1 Catalyse the combination of hydrogen and oxygen to form water
2 Adsorb hydrogen
3 Adsorb oxygen
4 To prevent the equilibrium between \({{\rm{H}}^{\rm{ + }}}\,\,{\rm{and}}\,\,{{\rm{H}}_{\rm{2}}}\)
CHXII03:ELECTROCHEMISTRY

330083 Assertion :
For a cell reaction,
\({\text{Z}}{{\text{n}}_{{\text{(s)}}}}{\text{ + Cu}}_{{\text{(aq)}}}^{{\text{2 + }}} \to {\text{Zn}}_{{\text{(aq)}}}^{{\text{2 + }}}{\text{ + C}}{{\text{u}}_{{\text{(s)}}}}{\text{;}}\)
at the equilibrium, voltmeter gives zero reading.
Reason :
At the equilibrium, there is no change in the concentration of \(\mathrm{Cu}^{2+}\) and \(\mathrm{Zn}^{2+}\) ions.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXII03:ELECTROCHEMISTRY

330084 Assertion :
Absolute value of \({\rm{E}}_{{\rm{red}}}^{\rm{o}}\) of an electrode cannot be determined.
Reason :
Neither oxidation nor reduction can takes place alone.

1 If both the assertion and reason are true and reason is a true explanation of the assertion
2 If both the assertion and reason are true but the reason is not the correct explanation of assertion
3 If the assertion is true but reason is false
4 If assertion is false but reason is true.
CHXII03:ELECTROCHEMISTRY

330085 A hydrogen gas electrode is made by dipping platinum wire in a solution of HCl of pH = 10 and by passing hydrogen gas around the platinum wire at one atm pressure. The oxidation potential of electrode would be

1 1.18 V
2 0.059 V
3 0.59 V
4 0.118 V
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