JEE Main 2022 Chemistry question
Match List-I with List-II : List-I (Reaction): (a) Cd(s) + 2Ni(OH)_{3}(s) \to CdO(s) + 2Ni(OH)_{2}(s) + H_{2}O(l) (b) Zn(Hg) + HgO(s) \to ZnO(s) + Hg(l) (c) 2PbSO_{4}(s) + 2H_{2}O(l) \to Pb(s) + PbO_{2}(s) + 2H_{2}SO_{4}(aq) (d) List-II: (I) Primary battery (II) Discharging of secondary battery (III) Fuel cell (IV) Charging of secondary battery Choose the correct answer from the options given below:
Answer: (C)
Solution
The Ni–Cd cell reaction CdO + is the discharging of a secondary battery (II). The Zn(Hg)/HgO reaction is a primary battery (I). The reaction $ +
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