03. ELECTROCHEMISTRY
ELECTROCHEMISTRY

19873 In electrolysis of aqueous copper sulphate, the gas at anode and cathode is

1 \({O_2}\) and \({H_2}\)
2 \(S{O_2}\) and \({H_2}\)
3 \({H_2}\) and \({O_2}\)
4 \(S{O_3}\) and \({O_2}\)
ELECTROCHEMISTRY

19874 Use of electrolysis is

1 Electroplating
2 Electrorefining
3 both \( (a)\)  and \((b)\)
4 None of these
ELECTROCHEMISTRY

19875 Sodium is made by the electrolysis of a molten mixture of about \(40\%\) \(NaCl\) and \( 60\%\) \(CaC{l_2}\) because

1 \(CaC{l_2}\) helps in conduction of electricity
2 This mixture has a lower melting point than \(NaCl\)
3 \(C{a^{ + 2 }}\) can displace \(Na\) from \(NaCl\)
4 \(C{a^{ + 2 }}\) can reduce \(NaCl\) to \(Na\)
ELECTROCHEMISTRY

19876 Electrolysis is a process in which the cations and anions of the electrolyte are

1 Hydrated
2 Hydrolysed
3 Charged
4 Discharged
ELECTROCHEMISTRY

19873 In electrolysis of aqueous copper sulphate, the gas at anode and cathode is

1 \({O_2}\) and \({H_2}\)
2 \(S{O_2}\) and \({H_2}\)
3 \({H_2}\) and \({O_2}\)
4 \(S{O_3}\) and \({O_2}\)
ELECTROCHEMISTRY

19874 Use of electrolysis is

1 Electroplating
2 Electrorefining
3 both \( (a)\)  and \((b)\)
4 None of these
ELECTROCHEMISTRY

19875 Sodium is made by the electrolysis of a molten mixture of about \(40\%\) \(NaCl\) and \( 60\%\) \(CaC{l_2}\) because

1 \(CaC{l_2}\) helps in conduction of electricity
2 This mixture has a lower melting point than \(NaCl\)
3 \(C{a^{ + 2 }}\) can displace \(Na\) from \(NaCl\)
4 \(C{a^{ + 2 }}\) can reduce \(NaCl\) to \(Na\)
ELECTROCHEMISTRY

19876 Electrolysis is a process in which the cations and anions of the electrolyte are

1 Hydrated
2 Hydrolysed
3 Charged
4 Discharged
ELECTROCHEMISTRY

19873 In electrolysis of aqueous copper sulphate, the gas at anode and cathode is

1 \({O_2}\) and \({H_2}\)
2 \(S{O_2}\) and \({H_2}\)
3 \({H_2}\) and \({O_2}\)
4 \(S{O_3}\) and \({O_2}\)
ELECTROCHEMISTRY

19874 Use of electrolysis is

1 Electroplating
2 Electrorefining
3 both \( (a)\)  and \((b)\)
4 None of these
ELECTROCHEMISTRY

19875 Sodium is made by the electrolysis of a molten mixture of about \(40\%\) \(NaCl\) and \( 60\%\) \(CaC{l_2}\) because

1 \(CaC{l_2}\) helps in conduction of electricity
2 This mixture has a lower melting point than \(NaCl\)
3 \(C{a^{ + 2 }}\) can displace \(Na\) from \(NaCl\)
4 \(C{a^{ + 2 }}\) can reduce \(NaCl\) to \(Na\)
ELECTROCHEMISTRY

19876 Electrolysis is a process in which the cations and anions of the electrolyte are

1 Hydrated
2 Hydrolysed
3 Charged
4 Discharged
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ELECTROCHEMISTRY

19873 In electrolysis of aqueous copper sulphate, the gas at anode and cathode is

1 \({O_2}\) and \({H_2}\)
2 \(S{O_2}\) and \({H_2}\)
3 \({H_2}\) and \({O_2}\)
4 \(S{O_3}\) and \({O_2}\)
ELECTROCHEMISTRY

19874 Use of electrolysis is

1 Electroplating
2 Electrorefining
3 both \( (a)\)  and \((b)\)
4 None of these
ELECTROCHEMISTRY

19875 Sodium is made by the electrolysis of a molten mixture of about \(40\%\) \(NaCl\) and \( 60\%\) \(CaC{l_2}\) because

1 \(CaC{l_2}\) helps in conduction of electricity
2 This mixture has a lower melting point than \(NaCl\)
3 \(C{a^{ + 2 }}\) can displace \(Na\) from \(NaCl\)
4 \(C{a^{ + 2 }}\) can reduce \(NaCl\) to \(Na\)
ELECTROCHEMISTRY

19876 Electrolysis is a process in which the cations and anions of the electrolyte are

1 Hydrated
2 Hydrolysed
3 Charged
4 Discharged