NEET Test Series from KOTA - 10 Papers In MS WORD
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CHXII03:ELECTROCHEMISTRY
330227
Assertion : \(96500\,\,{\text{C}}\) charge is required for the reduction of one mole of silver ions. Reason : The amount of electricity (or charge) required for oxidation or reduction depends on the stoichiometry of the electrode reaction.
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.
Explanation:
\(\mathrm{Ag}_{(\text {aq })}^{+}+\mathrm{e}^{-} \rightarrow \mathrm{Ag}_{(\mathrm{s})}\) Charge on one mole of electrons \(=6.02 \times 10^{23} \times 1.6021 \times 10^{-19}\) \(=96487 \mathrm{Cmol}^{-1} \approx 96500 \mathrm{C} \mathrm{mol}^{-1}\) So, option (1) is correct.
CHXII03:ELECTROCHEMISTRY
330228
A solution of \({\rm{Ni}}{\left( {{\rm{N}}{{\rm{O}}_{\rm{3}}}} \right)_{\rm{2}}}\) is electrolysed between platinum electrodes using a current of 5 amperes for 20 minutes. What mass of Ni is deposited at the cathode? (At. mass of Ni = 58.7 amu)
330271
Assertion : In the electrolysis of aqueous \(\mathrm{NaCl}, \mathrm{Na}\) is preferentially discharged at mercury cathode forming sodium amalgam. Reason : It is due to the fact that hydrogen has a high over voltage at mercury cathode.
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 Both Assertion and Reason are incorrect
Explanation:
In the electrolysis of aqueous \(\mathrm{NaCl}\), sodium is preferentially discharged at the mercury cathode forming sodium amalgam \((\mathrm{Na}-\mathrm{Hg})\) due to the fact that hydrogen has a high over voltage at mercury cathode.
AIIMS - 2007
CHXII03:ELECTROCHEMISTRY
330142
In electroplating, the article to be electroplated serves as
330227
Assertion : \(96500\,\,{\text{C}}\) charge is required for the reduction of one mole of silver ions. Reason : The amount of electricity (or charge) required for oxidation or reduction depends on the stoichiometry of the electrode reaction.
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.
Explanation:
\(\mathrm{Ag}_{(\text {aq })}^{+}+\mathrm{e}^{-} \rightarrow \mathrm{Ag}_{(\mathrm{s})}\) Charge on one mole of electrons \(=6.02 \times 10^{23} \times 1.6021 \times 10^{-19}\) \(=96487 \mathrm{Cmol}^{-1} \approx 96500 \mathrm{C} \mathrm{mol}^{-1}\) So, option (1) is correct.
CHXII03:ELECTROCHEMISTRY
330228
A solution of \({\rm{Ni}}{\left( {{\rm{N}}{{\rm{O}}_{\rm{3}}}} \right)_{\rm{2}}}\) is electrolysed between platinum electrodes using a current of 5 amperes for 20 minutes. What mass of Ni is deposited at the cathode? (At. mass of Ni = 58.7 amu)
330271
Assertion : In the electrolysis of aqueous \(\mathrm{NaCl}, \mathrm{Na}\) is preferentially discharged at mercury cathode forming sodium amalgam. Reason : It is due to the fact that hydrogen has a high over voltage at mercury cathode.
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 Both Assertion and Reason are incorrect
Explanation:
In the electrolysis of aqueous \(\mathrm{NaCl}\), sodium is preferentially discharged at the mercury cathode forming sodium amalgam \((\mathrm{Na}-\mathrm{Hg})\) due to the fact that hydrogen has a high over voltage at mercury cathode.
AIIMS - 2007
CHXII03:ELECTROCHEMISTRY
330142
In electroplating, the article to be electroplated serves as
330227
Assertion : \(96500\,\,{\text{C}}\) charge is required for the reduction of one mole of silver ions. Reason : The amount of electricity (or charge) required for oxidation or reduction depends on the stoichiometry of the electrode reaction.
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.
Explanation:
\(\mathrm{Ag}_{(\text {aq })}^{+}+\mathrm{e}^{-} \rightarrow \mathrm{Ag}_{(\mathrm{s})}\) Charge on one mole of electrons \(=6.02 \times 10^{23} \times 1.6021 \times 10^{-19}\) \(=96487 \mathrm{Cmol}^{-1} \approx 96500 \mathrm{C} \mathrm{mol}^{-1}\) So, option (1) is correct.
CHXII03:ELECTROCHEMISTRY
330228
A solution of \({\rm{Ni}}{\left( {{\rm{N}}{{\rm{O}}_{\rm{3}}}} \right)_{\rm{2}}}\) is electrolysed between platinum electrodes using a current of 5 amperes for 20 minutes. What mass of Ni is deposited at the cathode? (At. mass of Ni = 58.7 amu)
330271
Assertion : In the electrolysis of aqueous \(\mathrm{NaCl}, \mathrm{Na}\) is preferentially discharged at mercury cathode forming sodium amalgam. Reason : It is due to the fact that hydrogen has a high over voltage at mercury cathode.
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 Both Assertion and Reason are incorrect
Explanation:
In the electrolysis of aqueous \(\mathrm{NaCl}\), sodium is preferentially discharged at the mercury cathode forming sodium amalgam \((\mathrm{Na}-\mathrm{Hg})\) due to the fact that hydrogen has a high over voltage at mercury cathode.
AIIMS - 2007
CHXII03:ELECTROCHEMISTRY
330142
In electroplating, the article to be electroplated serves as
330227
Assertion : \(96500\,\,{\text{C}}\) charge is required for the reduction of one mole of silver ions. Reason : The amount of electricity (or charge) required for oxidation or reduction depends on the stoichiometry of the electrode reaction.
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.
Explanation:
\(\mathrm{Ag}_{(\text {aq })}^{+}+\mathrm{e}^{-} \rightarrow \mathrm{Ag}_{(\mathrm{s})}\) Charge on one mole of electrons \(=6.02 \times 10^{23} \times 1.6021 \times 10^{-19}\) \(=96487 \mathrm{Cmol}^{-1} \approx 96500 \mathrm{C} \mathrm{mol}^{-1}\) So, option (1) is correct.
CHXII03:ELECTROCHEMISTRY
330228
A solution of \({\rm{Ni}}{\left( {{\rm{N}}{{\rm{O}}_{\rm{3}}}} \right)_{\rm{2}}}\) is electrolysed between platinum electrodes using a current of 5 amperes for 20 minutes. What mass of Ni is deposited at the cathode? (At. mass of Ni = 58.7 amu)
330271
Assertion : In the electrolysis of aqueous \(\mathrm{NaCl}, \mathrm{Na}\) is preferentially discharged at mercury cathode forming sodium amalgam. Reason : It is due to the fact that hydrogen has a high over voltage at mercury cathode.
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 Both Assertion and Reason are incorrect
Explanation:
In the electrolysis of aqueous \(\mathrm{NaCl}\), sodium is preferentially discharged at the mercury cathode forming sodium amalgam \((\mathrm{Na}-\mathrm{Hg})\) due to the fact that hydrogen has a high over voltage at mercury cathode.
AIIMS - 2007
CHXII03:ELECTROCHEMISTRY
330142
In electroplating, the article to be electroplated serves as
