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Foundation9 past questions

Electrode Potential and EMF of Cells

Understand electrode potentials, standard electrode potentials, and how they determine the EMF of electrochemical cells.

Why this shows up in the exam

NEET and JEE often test your ability to calculate cell EMF and interpret electrode potentials to predict cell behavior.

How NEET tests this

Numerical · 6 QsSequence / ordering · 2 QsStatement analysis · 2 Qs

Practise it

These are real questions from past NEET papers that test this exact idea.

Question 1 of 9NEET 1996

Electrode potential for the following half-cell reactions are Zn → Zn²⁺ + 2e⁻; E° = + 0.76 V; Fe → Fe²⁺ + 2e⁻; E° = + 0.44 V. The EMF for the cell reaction Fe²⁺ + Zn → Zn²⁺ + Fe will be

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More challenging

17 harder questions built from the past papers above — a step up in difficulty, with distractors designed so you can't get there by elimination. Written and checked by our reviewers, not from a real paper.

Question 1 of 17

Consider the following standard electrode potentials: I₂ (s) + 2e⁻ → 2I⁻(aq); E° = +0.54 V Br₂(l) + 2e⁻ → 2Br⁻(aq); E° = +1.09 V Cl₂(g) + 2e⁻ → 2Cl⁻(aq); E° = +1.36 V Which of the following statements is correct regarding the reactivity of these halogens and halide ions?

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