CBSE Class 12 Chemistry Electrochemistry Question Bank Set B

Access the latest CBSE Class 12 Chemistry Electrochemistry Question Bank Set B. We have provided free printable Class 12 Chemistry worksheets in PDF format, specifically designed for Unit 2 Electrochemistry. These practice sets are prepared by expert teachers following the 2025-26 syllabus and exam patterns issued by CBSE, NCERT, and KVS.

Unit 2 Electrochemistry Chemistry Practice Worksheet for Class 12

Students should use these Class 12 Chemistry chapter-wise worksheets for daily practice to improve their conceptual understanding. This detailed test papers include important questions and solutions for Unit 2 Electrochemistry, to help you prepare for school tests and final examination. Regular practice of these Class 12 Chemistry questions will help improve your problem-solving speed and exam accuracy for the 2026 session.

Download Class 12 Chemistry Unit 2 Electrochemistry Worksheet PDF

 

ELECTROCHEMISTRY
 
1. The products formed when an aqueous solution of NaBr is electrolysed in a cell having inert electrodes are:
(a) Na and Br2
(b) Na and O2
(c) H2 ,Br2 and NaOH
(d) H2 and O2
 
2. Time required to deposit one millimole of aluminium metal by the passage of 9.65 amperes through aqueous solution of aluminium ion is
(a) 30 s    (b) 10 s    (c) 30,000 s    (d) 10,000 s
 
3. The cell constant of a given cell is 0.47 cm–1.The resistance of a solution placed in this cell is measured to be 31.6 ohm. The conductivity of the solution in S cm–1 is
(a) 0.15   (b) 1.5     (c) 0.015        (d) 150
 
4. Assertion –Reason type questions:
 
In the following questions a statement of assertion followed by a statement of reason is given.Choose the correct answer from the following choices.
 
(a) Both assertion and reason are correct statements and the reason is a correct explanation for assertion.
 
(b) Both assertion and reason are correct but reason is not a correct explanation for assertion.
 
(c) Assertion is correct but reason is incorrect.
 
(d) Assertion is wrong but reason is correct.
 
(i) Assertion: Electrical conductivity of copper decreases with increase in temperature
Reason: The electrical conductivity of metals is due to motion of electrons.
 
(ii) Assertion:Mercury cell doesnotgivesteady potential
Reason:In the cell reaction,ions are not involved in the solution.
 
5. Read the given passage and answer the questions that follow:
 
A Lead storage battery is the most important type of secondary cell having a lead anode and a grid of lead packed with PbO2 as cathode. A 38% solution of sulphuric acid is used as electrolyte.
(Density=1.294 g mL-1) The battery holds 3.5 L of the acid. During the discharge of the battery, the density of H2SO4 falls to 1.139 g mL-1. (20% H2SO4 by mass)
(i) Write the reaction taking place at the cathode when the battery is in use.
(ii) How much electricity in terms of Faraday is required to carry out the reduction of one mole of PbO2?
(iii)What is the molarity of sulphuric acid before discharge?
(iv)Lead storage battery is considered a secondary cell. Why?
(v) Write the products of electrolysis when dilute sulphuric acid is electrolysed using Platinum electrodes.
 
6. What is meant by limiting molar conductivity?
 
7. The E 0 values of Cu and Zn are 0.34V and –0.76V respectively. Which of the two is a stronger reducing agent?
 
8. Calculate the potential of hydrogen electrode in contact with a solution having pH value 10.
 
9. How many Faradays are required to produce 2.4g of Mg?
 
10. How much charge is needed to oxidize one mole of FeO to Fe2O3?
 
11. Write Nerst equation and calculate the emf of following cell at 298 K:
 
Mg(s)|Mg2+ (0.001 M)||Cu2+ (0.0001 M)|Cu(s) .Given E0 cell= 2.71 V.
 
12. Define and express the relationship between conductivity and molar conductivity for the solution of an electrolyte.
 
13. Electrolytic specific conductance of 0.25M solution of KCl at 250C is 2.56 x 10-2S/cm, calculate the molar conductance.
 
14. Describe the reactions which occur at the electrodes in a fuel cell that causes H2 and O2 to produce electricity.
 
15. How many hours does it take to reduce 3 moles of Fe3+ to Fe2+ with a current of 2amperes?
 
16. Account for the following:
a) Alkaline medium inhibits the rusting of iron.
b) Iron does not rust even if the zinc coating is broken in a galvanized iron pipe.
 
17. Calculate the time to deposit 1.5 g of silver at cathode when a current of 1.5 A was passed through the solution of AgNO3. (Molar mass of Ag = 108 g mol-1, 1 F = 96500 C mol-1)
 
18. Three electrolytic cells A, B, C containing solutions of ZnSO4, AgNO3 and CuSO4,respectively are connected in series. A steady current of 1.5 amperes was passed through them until 1.45 g of silver deposited at the cathode of cell B. How long did the current flow? What mass of copper and zinc were deposited?
 
19. Conductivity of 0.00241 M acetic acid is 7.896 × 10–5 S cm–1. Calculate its molar conductivity and if Λ0 m for acetic acid is 390.5Scm2mol–1, what is its dissociation constant?
 
20. Calculate the equilibrium constant and ΔG0 for the following reaction at 250C.
Ni(s)+ 2Ag+(aq) → Ni2+(aq) + 2Ag (s),
Given that the std electrode potential at 250C is 1.05V. (1F = 96500 C mol-1)
 
21. What type of a battery is the lead storage battery? Write the anode and cathode reactions and the overall reaction occurring in a lead storage battery when the cell is in use.
 
22. A conductivity cell with cell constant 3cm-1 is filled with 0.1M acetic acid solution. The resistance is found to be 4000 ohms. Find
a] molar conductance of 0.1M acetic acid
b] Degree of dissociation of acetic acid given that Λ0 (CH3COOH) = 400 S cm2 mol-1.
 

Please click on below link to download CBSE Class 12 Chemistry Electrochemistry Question Bank Set B

Unit 02 Electrochemistry
CBSE Class 12 Chemistry Electrochemistry Question Bank
CBSE Class 12 Chemistry Electrochemistry Question Bank Set A
CBSE Class 12 Chemistry Electrochemistry Question Bank Set B
CBSE Class 12 Chemistry Electrochemistry Question Bank Set C
CBSE Class 12 Chemistry Electrochemistry Worksheet Set A
CBSE Class 12 Chemistry Electrochemistry Worksheet Set B
CBSE Class 12 Chemistry Electrochemistry Worksheet Set C
Unit 03 Chemical Kinetics
CBSE Class 12 Chemistry Chemical Kinetics Question Bank Set A
CBSE Class 12 Chemistry Chemical Kinetics Question Bank Set B
CBSE Class 12 Chemistry Chemical Kinetics Worksheet
CBSE Class 12 Chemistry Chemical Kinetics Worksheet Set A
CBSE Class 12 Chemistry Chemical Kinetics Worksheet Set B
CBSE Class 12 Chemistry Chemical Kinetics Worksheet Set C
CBSE Class 12 Chemistry Chemical Kinetics Worksheet Set D
Unit 04 The d- and f-Block Elements
CBSE Class 12 Chemistry All Chapters Solved Worksheet
CBSE Class 12 Chemistry D And F Block Elements Question Bank Set A
CBSE Class 12 Chemistry D And F Block Elements Question Bank Set B
CBSE Class 12 Chemistry D And F Block Elements Worksheet Set A
CBSE Class 12 Chemistry D And F Block Elements Worksheet Set B
CBSE Class 12 Chemistry D And F Block Elements Worksheet Set C
CBSE Class 12 Chemistry Organic Compounds Containing Nitrogen Worksheet
CBSE Class 12 Chemistry The d and f Block Elements Worksheet Set A
CBSE Class 12 Chemistry The d and f Block Elements Worksheet Set B
CBSE Class 12 Chemistry The D Block Elements Worksheet
Unit 05 Coordination Compounds
CBSE Class 12 Chemistry Coordination Compounds Question Bank Set A
CBSE Class 12 Chemistry Coordination Compounds Question Bank Set B
CBSE Class 12 Chemistry Coordination Compounds Worksheet Set A
CBSE Class 12 Chemistry Coordination Compounds Worksheet Set B
CBSE Class 12 Chemistry Coordination Compounds Worksheet Set C
CBSE Class 12 Chemistry Coordination Compounds Worksheet Set D
CBSE Class 12 Chemistry Coordination Compounds Worksheet Set E
Unit 06 Haloalkanes and Haloarenes
CBSE Class 12 Chemistry Haloalkanes And Haloarenes Question Bank Set A
CBSE Class 12 Chemistry Haloalkanes And Haloarenes Question Bank Set B
CBSE Class 12 Chemistry Haloalkanes and Haloarenes Worksheet Set A
CBSE Class 12 Chemistry Haloalkanes and Haloarenes Worksheet Set B
CBSE Class 12 Chemistry Haloalkanes And Haloarenes Worksheet Set C
CBSE Class 12 Chemistry Haloalkanes And Haloarenes Worksheet Set D
CBSE Class 12 Chemistry Haloalkanes And Haloarenes Worksheet Set E
Unit 07 Alcohols, Phenols and Ethers
CBSE Class 12 Chemistry Alcohols Phenols And Ethers Question Bank
CBSE Class 12 Chemistry Alcohols Phenols and Ethers Worksheet Set A
CBSE Class 12 Chemistry Alcohols Phenols And Ethers Worksheet Set B
CBSE Class 12 Chemistry Alcohols Phenols And Ethers Worksheet Set C
CBSE Class 12 Chemistry Alcohols Phenols And Ethers Worksheet Set D
CBSE Class 12 Chemistry Alcohols Phenols And Ethers Worksheet Set E
Unit 08 Aldehydes, Ketones and Carboxylic Acids
CBSE Class 12 Chemistry Aldehydes Ketone and Carboxylic Acids Worksheet Set A
CBSE Class 12 Chemistry Aldehydes Ketone and Carboxylic Acids Worksheet Set B
CBSE Class 12 Chemistry Aldehydes Ketones And Carboxylic Acids Question Bank Set A
CBSE Class 12 Chemistry Aldehydes Ketones And Carboxylic Acids Question Bank Set B
CBSE Class 12 Chemistry Aldehydes Ketones And Carboxylic Acids Question Bank Set C
CBSE Class 12 Chemistry Aldehydes Ketones And Carboxylic Acids Question Bank Set D
CBSE Class 12 Chemistry Aldehydes Ketones And Carboxylic Acids Question Bank Set E
Unit 09 Amines
CBSE Class 12 Chemistry Amines Worksheet Set A
CBSE Class 12 Chemistry Amines Worksheet Set B
CBSE Class 12 Chemistry Amines Worksheet Set C
CBSE Class 12 Chemistry Amines Worksheet Set D
CBSE Class 12 Chemistry Amines Worksheet Set E
Unit 10 Biomolecules
CBSE Class 12 Chemistry Biomolecules Question Bank Set A
CBSE Class 12 Chemistry Biomolecules Question Bank Set B
CBSE Class 12 Chemistry Biomolecules Worksheet Set A
CBSE Class 12 Chemistry Biomolecules Worksheet Set B
CBSE Class 12 Chemistry Biomolecules Worksheet Set C
CBSE Class 12 Chemistry Biomolecules Worksheet Set D
z More Worksheets for Class 12 Chemistry
CBSE Class 12 Chemistry All Chapters Questions Bank
CBSE Class 12 Chemistry Solution Question Bank
CBSE Class 12 Chemistry Solutions Question Bank Set A
CBSE Class 12 Chemistry Solutions Question Bank Set B
CBSE Class 12 Chemistry Solutions Worksheet
CBSE Class 12 Chemistry Solutions Worksheet Set A
CBSE Class 12 Chemistry Solutions Worksheet Set B
CBSE Class 12 Chemistry Worksheet Set A Solved
CBSE Class 12 Chemistry Worksheet Set B Solved
CBSE Class 12 Chemistry Worksheet Set C Solved
CBSE Class 12 Chemistry Worksheet Set D
CBSE Class 12 Chemistry Worksheet Set E Solved
CBSE Class 12 Chemistry Worksheet Set F
CBSE Class 12 Chemistry Worksheet Set G Solved
CBSE Class 12 Chemistry Worksheet Set H Solved
CBSE Class 12 Chemistry Worksheet Set I Solved
~ Class 12 Chemistry (Old Chapters)
CBSE Class 12 Chemistry Chemistry in Everyday Life Question Bank
CBSE Class 12 Chemistry Chemistry in Everyday Life Worksheet Set A
CBSE Class 12 Chemistry Chemistry in Everyday Life Worksheet Set B
CBSE Class 12 Chemistry General principles and Processes of isolation of elements Question Bank
CBSE Class 12 Chemistry General Principles and Processes of Isolation of Elements Worksheet Set A
CBSE Class 12 Chemistry General Principles And Processes of Isolation of Elements Worksheet Set B
CBSE Class 12 Chemistry General Principles And Processes of Isolation of Elements Worksheet Set C
CBSE Class 12 Chemistry General Principles And Processes of Isolation of Elements Worksheet Set D
CBSE Class 12 Chemistry General Principles And Processes of Isolation of Elements Worksheet Set E
CBSE Class 12 Chemistry In Everyday Life Question Bank
CBSE Class 12 Chemistry In Everyday Life Worksheet Set A
CBSE Class 12 Chemistry Polymers Worksheet Set A
CBSE Class 12 Chemistry Polymers Worksheet Set B
CBSE Class 12 Chemistry Polymers Worksheet Set C
CBSE Class 12 Chemistry Polymers Worksheet Set D
CBSE Class 12 Chemistry Solid State Question Bank
CBSE Class 12 Chemistry Solid State Question Bank Set A
CBSE Class 12 Chemistry Solid State Question Bank Set B
CBSE Class 12 Chemistry Solid State Worksheet
CBSE Class 12 Chemistry Surface Chemistry Question Bank
CBSE Class 12 Chemistry Surface Chemistry Question Bank Set A
CBSE Class 12 Chemistry Surface Chemistry Question Bank Set B
CBSE Class 12 Chemistry Surface Chemistry Worksheet Set A
CBSE Class 12 Chemistry Surface Chemistry Worksheet Set B
CBSE Class 12 Chemistry Surface Chemistry Worksheet Set C
CBSE Class 12 Chemistry Surface Chemistry Worksheet Set D
CBSE Class 12 Chemistry Surface Chemistry Worksheet Set E
CBSE Class 12 Chemistry The P Block Elements Question Bank
CBSE Class 12 Chemistry The P Block Elements Question Bank Set A
CBSE Class 12 Chemistry The P Block Elements Question Bank Set B
CBSE Class 12 Chemistry The p Block Elements Worksheet Set A
CBSE Class 12 Chemistry The p Block Elements Worksheet Set B
CBSE Class 12 Chemistry The p Block Elements Worksheet Set C
CBSE Class 12 Chemistry The P Block Elements Worksheet Set E
CBSE Class 12 Chemistry The P Block Elements Worksheet Set F
CBSE Class 12 Chemistry The Solid State Worksheet Set A
CBSE Class 12 Chemistry The Solid State Worksheet Set B

More free study material for Chemistry

Unit 2 Electrochemistry CBSE Class 12 Chemistry Worksheet

Students can use the Unit 2 Electrochemistry practice sheet provided above to prepare for their upcoming school tests. This solved questions and answers follow the latest CBSE syllabus for Class 12 Chemistry. You can easily download the PDF format and solve these questions every day to improve your marks. Our expert teachers have made these from the most important topics that are always asked in your exams to help you get more marks in exams.

NCERT Based Questions and Solutions for Unit 2 Electrochemistry

Our expert team has used the official NCERT book for Class 12 Chemistry to create this practice material for students. After solving the questions our teachers have also suggested to study the NCERT solutions  which will help you to understand the best way to solve problems in Chemistry. You can get all this study material for free on studiestoday.com.

Extra Practice for Chemistry

To get the best results in Class 12, students should try the Chemistry MCQ Test for this chapter. We have also provided printable assignments for Class 12 Chemistry on our website. Regular practice will help you feel more confident and get higher marks in CBSE examinations.

Where can I download the latest PDF for CBSE Class 12 Chemistry Electrochemistry Question Bank Set B?

You can download the teacher-verified PDF for CBSE Class 12 Chemistry Electrochemistry Question Bank Set B from StudiesToday.com. These practice sheets for Class 12 Chemistry are designed as per the latest CBSE academic session.

Are these Chemistry Class 12 worksheets based on the 2026 competency-based pattern?

Yes, our CBSE Class 12 Chemistry Electrochemistry Question Bank Set B includes a variety of questions like Case-based studies, Assertion-Reasoning, and MCQs as per the 50% competency-based weightage in the latest curriculum for Class 12.

Do you provide solved answers for CBSE Class 12 Chemistry Electrochemistry Question Bank Set B?

Yes, we have provided detailed solutions for CBSE Class 12 Chemistry Electrochemistry Question Bank Set B to help Class 12 and follow the official CBSE marking scheme.

How does solving CBSE Class 12 Chemistry Electrochemistry Question Bank Set B help in exam preparation?

Daily practice with these Chemistry worksheets helps in identifying understanding gaps. It also improves question solving speed and ensures that Class 12 students get more marks in CBSE exams.

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All our Class 12 Chemistry practice test papers and worksheets are available for free download in mobile-friendly PDF format. You can access CBSE Class 12 Chemistry Electrochemistry Question Bank Set B without any registration.