Match List-I with List-II: List-I (Applications) | List-II (Batteries/Cell) (A) Transistors | (I) Anode – Zn/Hg;…
Electrochemistry · Class 12 · JEE Main Previous Year Question
Match List-I with List-II:
List-I (Applications) | List-II (Batteries/Cell) (A) Transistors | (I) Anode – Zn/Hg; Cathode – HgO + C (B) Hearing aids | (II) Hydrogen fuel cell (C) Invertors | (III) Anode – Zn; Cathode – Carbon (D) Apollo spa\ce ship | (IV) Anode – Pb; Cathode – Pb | PbO₂
Choose the correct answer from the options given below:
- a✓
(A)-(III), (B)-(I), (C)-(IV), (D)-(II)
- b
(A)-(III), (B)-(II), (C)-(IV), (D)-(I)
- c
(A)-(IV), (B)-(III), (C)-(II), (D)-(I)
- d
(A)-(II), (B)-(III), (C)-(IV), (D)-(I)
(A)-(III), (B)-(I), (C)-(IV), (D)-(II)
Strategy: A spontaneous reaction requires a positive standard cell potential (). Calculate for each pairing.
Check Pairings ():
- (a) : (Spontaneous) ✓
- (b) : (Spontaneous) ✓
- (c) : (Spontaneous) ✓
- (d) : (Non-spontaneous) ✗
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