In NCERT Class 12 Chemistry Chapter 2, "Electrochemistry," students explore the interaction between electricity and chemical changes. Topics such as electrochemical cells, galvanic cells, Nernst equation, conductance of electrolytic solutions, and applications of electrochemistry in batteries and fuel cells are covered comprehensively.
This article offers essential resources for CBSE and CUET exam preparation, including sample MCQs and subjective questions. Downloadable PDFs for Class 12 Chemistry Chapter 2 MCQs and previous year questions are also included to practice NCERT Class 12 Electrochemistry.
|
NCERT Class 12 Chemistry Chapters
|
|
|
Chapter Number
|
Chapter Name
|
|
Chapter I
|
|
|
Chapter III
|
|
|
Chapter IV
|
|
|
Chapter V
|
|
|
Chapter VI
|
|
|
Chapter VII
|
|
|
Chapter VIII
|
|
|
Chapter IX
|
|
|
Chapter X
|
|
This question bank includes previous years' CUET and CBSE MCQs, along with questions curated by subject experts. Below are 5 sample multiple-choice questions (MCQs) for Class 12 Chemistry Chapter 2: Electrochemistry. For the full set of 50 questions, download the PDF using the link provided below.
|
1. |
The correct cell to represent the following reaction is: Zn + 2Ag+ β Zn2+ + 2Ag (a) 2Ag | Ag+ || Zn| Zn2+ (b) Ag+ | Ag || Zn2+ | Zn (c) Ag | Ag+ | Zn || Zn2+ (d) Zn | Zn2+ || Ag+ | Ag |
|
2. |
Consider the following standard electrode potential values: What is the cell potential for the redox reaction? (a) β2.28 π (b) β0.74 π (c) +0.74 π (d) +2.28 π |
|
3. |
A voltaic cell is made by connecting two half cells represented by half equations below: Which statement is correct about this voltaic cell? (a) πΉπ2+ is oxidized and the voltage of the cell is -0.91V (b) ππ is oxidized and the voltage of the cell is 0.91 V (c) πΉπ2+ is oxidized and the voltage of the cell is 0.91 V (d) ππ is oxidized and the voltage of the cell is 0.63 V |
|
4. |
βG and (a) positive, negative (b) negative, negative (c) negative, positive (d) positive, positive |
|
5. |
Ag+ (aq) + eβ βAg (s) EΒ° = + 0.80 V Fe2+ (aq) + 2eβ βFe (s) EΒ° = β 0.44 V Find the (a) 1.6 V (b) 1.16 V (c) 2.04 V (d) 1.24 V |
This question bank includes previous years' CBSE subjective questions (2 marks and above) without solutions, along with expert-curated questions. Below are 5 sample subjective questions for Class 12 Chemistry Chapter 2: Electrochemistry. To access all questions, download the PDF from the link provided below.
|
1. |
(i) What should be the signs (positive /negative) for (ii) State Faradayβs first law of electrolysis. (CBSE 2023, 2M) |
|
2. |
Calculate the emf of the following cell at 25ΛC : Al (s) |Al3+ (0Β·001 M) || (0Β·1) Ni2+ |Ni (s) Given : [ log 2 = 0Β·3010, log 3 = 0Β·4771 ] (CBSE 2019, 3M) |
|
3. |
(a) Calculate the emf of the following cell at 25Β°C: Zn (s) | Zn2+ (0Β·1 M) || H+ (0Β·01 M) | H2 (g) (1 bar), Pt (s) [Given : (b) State Kohlrausch law of independent migration of ions. Why does the conductivity of a solution decrease with dilution? (CBSE 2023, 5M) |
|
4. |
Calculate the EMF of the following cell at 298 K: πΉπ(π ) | πΉπ2+(0.01π) || π» Given (CBSE 2023, 2M) |
|
5. |
Write the Nernst equation for the following cell reaction : Zn (s) + Cu2+ (aq) β Zn2+ (aq) + Cu (s) How will the Ecell be affected when concentration of (i) Cu2+ ions is increased and (ii) Zn2+ ions is increased? (CBSE 2022, 2M) |
|
NCERT Science Subjects
|
|
|
Chapter Name |
Sub Topics of Chapter 2: Electrochemistry |
|
Electrochemistry |
2.1 Introduction |
|
2.2 Electrochemical Cells |
|
|
2.3 Galvanic Cells |
|
|
2.4 Nernst Equation |
|
|
2.5 Conductance of Electrolytic Solutions |
|
|
2.6 Electrolytic Cells and Electrolysis |
|
|
2.7 Batteries |
|
|
2.8 Fuel Cells |
|
|
2.9 Corrosion |
NCERT Class 12 Chemistry Chapter 2, "Electrochemistry," introduces the principles of electrochemical cells, conductance, and electrolysis. It emphasizes practical applications such as batteries, fuel cells, and methods to prevent corrosion, bridging theoretical and applied chemistry.
Mastery of this chapter equips students with essential knowledge for understanding energy systems and electrochemical devices, preparing them for exams like CBSE and CUET.