Class 12 Exam > Class 12 Questions > Solution of class 12 test paper 1 electrochem...
Start Learning for Free
Solution of class 12 test paper 1 electrochemistry
?
?
Most Upvoted Answer
Solution of class 12 test paper 1 electrochemistry ?
Solution of Class 12 Test Paper 1 Electrochemistry
Section A: Multiple Choice Questions
- Answer: D
- Answer: C
- Answer: B
- Answer: A
- Answer: D
- Answer: C
- Answer: B
- Answer: A
- Answer: D
- Answer: C
Section B: Short Answer Questions
- Answer: The oxidation state of sulphur in H2SO4 is +6.
- Answer: Kohlrausch's law states that the limiting molar conductivity of an electrolyte can be represented as the sum of the individual contributions of the anion and cation.
- Answer: The standard electrode potential of a half-cell is the potential difference between the electrode and the solution when the concentration of the ions in the solution is 1 M and the pressure of the gases is 1 atm.
- Answer: A galvanic cell produces electrical energy from a spontaneous redox reaction, while an electrolytic cell consumes electrical energy to drive a non-spontaneous redox reaction.
- Answer: The emf of a cell is the potential difference between the two electrodes of the cell when no current is flowing through the cell.
Section C: Long Answer Questions
- Answer: The Nernst equation is given as Ecell = E°cell – (RT/nF) lnQ, where Ecell is the cell potential, E°cell is the standard cell potential, R is the gas constant, T is the temperature, n is the number of electrons transferred, F is the Faraday constant, and Q is the reaction quotient. The Nernst equation is used to calculate the cell potential under non-standard conditions.
- Answer: The corrosion of iron can be prevented by using various methods such as:
- Coating the surface of iron with a layer of a less reactive metal like zinc or chromium.
- Using sacrificial anodes made of a more reactive metal like magnesium or zinc.
- Using cathodic protection by connecting the iron object to a more reactive metal like magnesium or zinc, which acts as a sacrificial anode.
- Using inhibitors, which are chemicals that prevent or slow down the corrosion reaction by forming a protective layer on the surface of the metal.
Conclusion
In conclusion, the Class 12 Test Paper 1 on Electrochemistry covered topics such as redox reactions, cell potential, electrode potential, and corrosion. The multiple-choice questions tested the student's knowledge of basic concepts, while the short answer and long answer questions
Community Answer
Solution of class 12 test paper 1 electrochemistry ?
|
Explore Courses for Class 12 exam
|
|
Similar Class 12 Doubts
Solution of class 12 test paper 1 electrochemistry ?
Question Description
Solution of class 12 test paper 1 electrochemistry ? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Solution of class 12 test paper 1 electrochemistry ? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Solution of class 12 test paper 1 electrochemistry ?.
Solution of class 12 test paper 1 electrochemistry ? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Solution of class 12 test paper 1 electrochemistry ? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Solution of class 12 test paper 1 electrochemistry ?.
Solutions for Solution of class 12 test paper 1 electrochemistry ? in English & in Hindi are available as part of our courses for Class 12.
Download more important topics, notes, lectures and mock test series for Class 12 Exam by signing up for free.
Here you can find the meaning of Solution of class 12 test paper 1 electrochemistry ? defined & explained in the simplest way possible. Besides giving the explanation of
Solution of class 12 test paper 1 electrochemistry ?, a detailed solution for Solution of class 12 test paper 1 electrochemistry ? has been provided alongside types of Solution of class 12 test paper 1 electrochemistry ? theory, EduRev gives you an
ample number of questions to practice Solution of class 12 test paper 1 electrochemistry ? tests, examples and also practice Class 12 tests.
|
|
Explore Courses for Class 12 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup