✓ Board-verified
Chemistry · 2025 · 1 mark
CBSE 2025 · Region 4 · Set 1 · Q13
Assertion (A): Electrolysis of aqueous NaCl gives H_2 at cathode and Cl_2 at anode. Reason (R): Chlorine has higher oxidation potential than H_2 O.
Assertion (A) : Electrolysis of aqueous NaCl gives $\displaystyle \mathrm{H}_{2}$ at cathode and $\displaystyle \mathrm{Cl}_{2}$ at anode. Reason $\displaystyle (R)$ : Chlorine has higher oxidation potential than $\displaystyle \mathrm{H}_{2} \mathrm{O}$.
Official answer
(C)
Assertion (A) is true, but Reason (R) is false.
All Electrochemistry questions2025 question paperNCERT solutions: ElectrochemistryPractice Electrochemistry →
More from Electrochemistry
- Kohlrausch gave the following relation for strong electrolytes: Λ_m=Λ_m^°-A √C Which of the following equality holds true?2025 · asked 2×
- Assertion: E_Cu^° 2+/ Cu is positive (+0.34 V). Reason (R): Copper has high Δ_a H^° and low Δ_hyd H^°.2023 · asked 2×
- During the electrolysis of aqueous NaCl, the cathodic reaction is:2024
- Calculate the standard Gibbs energy (Δ_r G^°) of the following reaction at 25 °C: 3 + 2 Au( s)+Ca^2+(1 M) → Au^3+(1 M)+Ca( s); E_Au^3+ / Au^°=+1.5 V,…2025
- (i) What should be the signs (positive/negative) for E^°_Cell and Δ G^° for a spontaneous redox reaction occurring under standard conditions? (ii)…2023
- Batteries and fuel cells are very useful forms of galvanic cell. Any battery or cell that we use as a source of electrical energy is basically a…2024
- (i) Why on dilution the Λ_m of CH_3 COOH increases very fast, while that of CH_3 COONa increases gradually? (ii) What happens if external potential…2022
- During electrolysis of dilute H_2 SO_4, using platinum electrodes, the gas evolved at the anode is:2025
CBSE Class 12 Chemistry past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.