4 JEE Main 2012 Electrochemistry previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2012 previous-year questions from the Electrochemistry chapter of Chemistry. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Electrochemistry chapter hub.
The standard reduction potentials for Zn²⁺ / Zn, Ni²⁺ / Ni, and Fe²⁺ / Fe are -0.76,-0.23 and -0.44 ~V respectively. Th…
Given ECu²⁺ / Cuⁱrc=0.34 ~V, ECu²⁺ / Cuⁱrc=0.15 ~V Standard electrode potential for the half cell Cu⁺ / Cu is
The standard potentials of Ag⁺ / Ag, Hg₂ ²⁺ / 2 Hg, Cu²⁺ / Cu and Mg²⁺ / Mg electrodes are 0.80,0.79, 0.34 and -2.37 ~V…
A battery is constructed of Cr and Na₂ Cr₂ O₇. The unbalanced chemical equation when such a battery discharges is follo…