CBSE 12 Chemistry · U2
Electrochemistry
Electrochemical cells, galvanic cells, Nernst equation, conductance of electrolytic solutions, electrolytic cells, electrolysis, batteries, fuel cells, and corrosion. Theory weightage: 9 marks.
Test yourself
A focused, distraction-free run through 25 multiple-choice questions. Hints if you need them; your score at the end.
Difficulty guide
The label describes the problem, not your ability.
1/5 - Foundational
Warm-up setup; checks one basic idea.
2/5 - Routine exam skill
Normal syllabus skill; usually one main rule or interpretation.
3/5 - Standard multi-step
Exam-style problem with multiple steps or a common trap.
4/5 - Hard exam skill
High-end exam problem; combines methods carefully.
5/5 - Challenge
Stretch problem beyond normal exam pressure.
Topic 2.1
Electrochemical Cells and Electrode Potentials
Galvanic cells, anode-cathode roles, standard potentials and cell notation.
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Topic 2.2
Nernst Equation, Equilibrium and Gibbs Energy
Non-standard emf, concentration cells, equilibrium constant and $\Delta G$ relation.
Topic 2.3
Conductance and Kohlrausch's Law
Conductivity, molar conductivity, dilution trends, cell constant and limiting molar conductivity.
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Topic 2.4
Electrolysis and Faraday's Laws
Charge, equivalents, mass deposition, gas liberation and current efficiency.
Topic 2.5
Batteries, Fuel Cells and Corrosion
Primary and secondary cells, lead storage battery, fuel cells, rusting and corrosion protection.
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