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Electrochemistry question

2022 · 28 Jul · Shift 1 · Q3
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  5. /2022 · 28 Jul · Shift 1 · Q3

Electrochemistry question

2022 · 28 Jul · Shift 1 · Q3

JEE MainChemistryElectrochemistryMCQ+4 / −1

Match List - I with List - II.

List - I List - II
(A) Cd(s)+2Ni(OH)3(s)→CdO(s)+2Ni(OH)2(s)+H2O(l)Cd(s) + 2Ni{(OH)_3}(s) \to CdO(s) + 2Ni{(OH)_2}(s) + {H_2}O(l)Cd(s)+2Ni(OH)3​(s)→CdO(s)+2Ni(OH)2​(s)+H2​O(l) (I) Primary battery
(B) Zn(Hg)+HgO(s)→ZnO(s)+Hg(l)Zn(Hg) + HgO(s) \to ZnO(s) + Hg(l)Zn(Hg)+HgO(s)→ZnO(s)+Hg(l) (II) Discharging of secondary battery
(C) 2PbSO4(s)+2H2O(l)→Pb(s)+PbO2(s)+2H2SO4(aq)2PbS{O_4}(s) + 2{H_2}O(l) \to Pb(s) + Pb{O_2}(s) + 2{H_2}S{O_4}(aq)2PbSO4​(s)+2H2​O(l)→Pb(s)+PbO2​(s)+2H2​SO4​(aq) (III) Fuel cell
(D) 2H2(g)+O2(g)→2H2O(l)2{H_2}(g) + {O_2}(g) \to 2{H_2}O(l)2H2​(g)+O2​(g)→2H2​O(l) (IV) Charging of secondary battery

Choose the correct answer from the options given below:

  1. A
    (A)−(I),(B)−(II),(C)−(III),(D)−(IV)(\mathrm{A})-(\mathrm{I}),(\mathrm{B})-(\mathrm{II}),(\mathrm{C})-(\mathrm{III}),(\mathrm{D})-(\mathrm{IV})(A)−(I),(B)−(II),(C)−(III),(D)−(IV)
  2. B
    (A)−(IV),(B)−(I),(C)−(II),(D)−(III)(\mathrm{A})-(\mathrm{IV}),(\mathrm{B})-(\mathrm{I}),(\mathrm{C})-(\mathrm{II}),(\mathrm{D})-(\mathrm{III})(A)−(IV),(B)−(I),(C)−(II),(D)−(III)
  3. C
    (A)−(II),(B)−(I),(C)−(IV),(D)−(III)(\mathrm{A})-(\mathrm{II}),(\mathrm{B})-(\mathrm{I}),(\mathrm{C})-(\mathrm{IV}),(\mathrm{D})-(\mathrm{III})(A)−(II),(B)−(I),(C)−(IV),(D)−(III)
  4. D
    (A)−(II),(B)−(I),(C)−(III),(D)−(IV)(\mathrm{A})-(\mathrm{II}),(\mathrm{B})-(\mathrm{I}),(\mathrm{C})-(\mathrm{III}),(\mathrm{D})-(\mathrm{IV})(A)−(II),(B)−(I),(C)−(III),(D)−(IV)
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