Start learning →

JEE Main Unit 9B1: Electrochemical Cells and Standard Potentials — practice questions — page 2

Explore 48 free Unit 9B1: Electrochemical Cells and Standard Potentials questions in JEE Main Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

Practise Unit 9B1: Electrochemical Cells and Standard Potentials with Quill →

Unit 9B1: Electrochemical Cells and Standard Potentials questions and exercises with answers

Showing questions 31–48 of 48.

Standard electrode potential of standard hydrogen electrode (SHE) is:Read the answer and worked solution →In Daniell cell (Zn | Zn²⁺ || Cu²⁺ | Cu), electron flow in external circuit:Read the answer and worked solution →Faraday's first law of electrolysis: amount of substance liberated at electrode is proportional to:Read the answer and worked solution →Conductance is the:Read the answer and worked solution →Nernst equation for cell potential (at 25°C):Read the answer and worked solution →For Daniell cell, cell reaction Zn + Cu²⁺ → Zn²⁺ + Cu. Cell EMF:Read the answer and worked solution →Faraday constant F is:Read the answer and worked solution →Standard Gibbs free energy and cell EMF relation:Read the answer and worked solution →Relation between equilibrium constant K and E°:Read the answer and worked solution →How many coulombs are needed to deposit 1 mole of Cu from CuSO₄ (Cu²⁺ + 2e⁻ → Cu)?Read the answer and worked solution →Time to deposit 1.27 g of Cu from CuSO₄ solution at 2 A current (Cu atomic mass = 63.5):Read the answer and worked solution →Equilibrium constant for cell with E° = 0.118 V, n = 2, at 25°C:Read the answer and worked solution →Specific conductance κ has units:Read the answer and worked solution →Hydrogen-Oxygen fuel cell produces:Read the answer and worked solution →Lead acid battery (used in cars) overall reaction:Read the answer and worked solution →Standard reduction potential ranking. Which is the strongest oxidizing agent?Read the answer and worked solution →Resistance of a conductivity cell filled with 0.1 M KCl is 100 Ω. Specific conductivity κ of solution (cell constant = 1.5 cm⁻¹):Read the answer and worked solution →For a cell reaction reversed in direction, E° becomes:Read the answer and worked solution →

Worked practice questions

Standard electrode potential of standard hydrogen electrode (SHE) is:

  1. -1 V
  2. 0.5 V
  3. 0 V (by convention, reference)
  4. +1 V
Show answer and solution

Correct answer: C. 0 V (by convention, reference)

**SHE:** 2H⁺(1 M) + 2e⁻ → H₂(1 atm) is assigned E° = 0 V by convention. All other standard reduction potentials measured relative to SHE.

Open this question →

In Daniell cell (Zn | Zn²⁺ || Cu²⁺ | Cu), electron flow in external circuit:

  1. No flow
  2. Zn → Cu (anode to cathode externally)
  3. Both directions
  4. Cu → Zn
Show answer and solution

Correct answer: B. Zn → Cu (anode to cathode externally)

In Daniell cell, electrons flow from Zn (anode, oxidized) to Cu (cathode, reduced) through external circuit. Conventional current flows from Cu to Zn. EMF ≈ 1.1 V at standard conditions.

Open this question →

Faraday's first law of electrolysis: amount of substance liberated at electrode is proportional to:

  1. Volume
  2. Voltage
  3. Charge passed (Q = I × t)
  4. Time only
Show answer and solution

Correct answer: C. Charge passed (Q = I × t)

m = (Q × M)/(n × F) where Q = It is charge, M = molar mass, n = electrons per ion, F = 96500 C/mol. Mass deposited is directly proportional to charge.

Open this question →

How to practise

  1. Choose a Unit 9B1: Electrochemical Cells and Standard Potentials question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

Put it into practice

Continue with Unit 9B1: Electrochemical Cells and Standard Potentials practice for JEE Main. Read explanations as you go. No signup form needed to start.

Practise Unit 9B1: Electrochemical Cells and Standard Potentials →

More Chemistry topics

Aldehydes, Ketones and Carboxylic AcidsElectrochemistryStructure of AtomThe d- and f-Block Elements & Coordination CompoundsSolutionsRedox ReactionsUnit 2B1: Transition Metals & Coordination CompoundsChemical Kinetics