AIEEE 2009 In a hydrogen-oxygen fuel cell, the combustion of hydrogen occurs because of the difference in potential between two electrodes. Here we have covered Important Questions on Electrochemistry for Class 12 Chemistry subject.. Chemistry Important Questions Class 12 are given below.. (1) (4) Hence option (c) is the answer. Practicing JEE Advanced Previous Year Papers Questions of Chemistry will help the JEE aspirants in realizing the question pattern as well as help in analyzing weak & strong areas. Download the PDF Question Papers Free for off line practice and view the Solutions online. SHOW SOLUTION Answer: Ag + + e – ——> Ag(s) 1 Faraday of … $\mathrm{Zn}\left|\mathrm{Zn}^{2+}(1 \mathrm{M}) \| \mathrm{Cu}^{2+}(1 \mathrm{M})\right| \mathrm{Cu}$, of potential 1.1 V. When $\mathrm{E}_{\mathrm{ext}}<1.1 \mathrm{V}$ and $\mathrm{E}_{\mathrm{ext}}>1.1 \mathrm{V}$ , respectively electrons flow from : Plus Two Chemistry Chapter Wise Previous Questions Chapter 3 Electrochemistry is part of Kerala Plus Two Chemistry Chapter Wise Previous Year Questions and Answers. Hence, $\mathrm{MnO}_{4}^{-}$ is stronger oxidising agent. Free Question Bank for NEET Chemistry Electrochemistry. The maximum age limit is 30 years as on December 31, of the year of admission for students belonging to reserved category. (3) $\mathrm{Mn}^{2+}$ It includes questions asked in previous year exams, questions provided by Kendriya Vidyalaya KV schools, DoE, Delhi government school, Navodaya Vidyalaya samiti NVS and other government and private schools in India and abroad that are affiliated to CBSE, New Delhi. Since $\mathrm{Cr}^{+3}$ is having least reducing potential, so Cr is the best Reducing agent. This test is Rated positive by 87% students preparing for Class 12.This MCQ test is related to Class 12 syllabus, prepared by Class 12 teachers. (c) Corrosion of iron can be minimized by forming an impermeable barrier at its surface. The correct relationship between $\lambda_{\mathrm{C}}$ and $\lambda_{\infty}$ is given as: (1) SHOW SOLUTION This is the currently selected item. Electrochemistry What's 'n' in the equation: E°(cell) = 0.0591/n log Kc (1)Zn         (2) Pb         (3) Cr        (4) Cu. (1) anode to cathode in both cases (4) $\lambda_{\mathrm{C}}=\lambda_{\infty}-(\mathrm{B}) \mathrm{C}$ 13. If φ denotes reduction potential, then which is true? (4) If the standard electrode potential for a cell is 2 V at 300 K, the equilibrium constant (K) for the reaction, at 300 K is approximately (R = 8 J K–1 mol–1, F = 96500 C mol–1), 14. Generally, electrochemistry covers weight age of 2-3 questions in every … 15 ratings • 1 review. Resistance of 0.2 M solution of an electrolyte is $50 \Omega$. JEE Main Previous Year Papers Questions With Solutions Chemistry Redox Reactions and Electrochemistry. (Atomic weight of B = 10.8 u) Register online for Chemistry tuition on Vedantu.com to score more marks in CBSE board examination. Since $\mathrm{Cr}^{+3}$ is having least reducing potential, so Cr is the best Reducing agent. Kerala Plus Two Chemistry Chapter Wise Questions and Answers Chapter 3 Electrochemistry Plus Two Chemistry Electrochemistry One Mark Questions and Answers. Download JEE Advanced Chemistry Practice Sample Paper Answer and Solution. NATIONAL ELIGIBILITY CUM ENTRANCE TEST(UG) – 2020 [NEET(UG)-2020] will be conducted by the Central Board of Secondary Education (CBSE), for admission to MBBS/BDS Courses in India in Medical/Dental Colleges run with the approval of Medical Council of India/Dental Council of India under the Union Ministry of Health and Family Welfare, Government of India except for the institutions … So 0.1 F will deposit (0.1/2) moles of Ni. Based on the data given above, strongest oxidising agent will be : Higher the SRP, stronger will be oxidising agent. 011-47340170 . Download eSaral App for Video Lectures, Complete Revision, Study Material and much more...Sol. (1) $\mathrm{Cl}^{-}$ and $\mathrm{Br}^{-}$ $\mathrm{E}_{\mathrm{Fe}^{-3} / \mathrm{Fe}}^{\circ}=-0.036 \mathrm{V}, \quad \mathrm{E}_{\mathrm{Fe}^{-2} / \mathrm{Fe}}^{\circ}=-0.439 \mathrm{V}$. Download eSaral App for Video Lectures, Complete Revision, Study Material and much more...Sol. 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A-1, Acharya Nikatan, Mayur Vihar, Phase-1, Central Market, New Delhi-110091. Chapterwise Previous Years Questions 2019-10 (PYQs) with Solutions for Class 6 to Class 12 Maths, Science, English, Social Science, and Hindi prepared by expert teachers in PDF format to download on LearnCBSE.in and increase your chances to score higher marks in your CBSE Exams. (2), (1) $6250 \mathrm{Sm}^{2} \mathrm{mol}^{-1}$, (2) $6.25 \times 10^{-4} \mathrm{S} \mathrm{m}^{2} \mathrm{mol}^{-1}$, (3) $625 \times 10^{-4} \mathrm{S} \mathrm{m}^{2} \mathrm{mol}^{-1}$, (4) $62.5 \mathrm{S} \mathrm{m}^{2} \mathrm{mol}^{-1}$, Q. (at. (3) $625 \times 10^{-4} \mathrm{S} \mathrm{m}^{2} \mathrm{mol}^{-1}$ For spontaneous reaction $\mathrm{E}^{\circ}>0 \mathrm{so}(\mathrm{A})$, For spontaneous reaction $\mathrm{E}^{\circ}>0 \mathrm{so}(\mathrm{A})$. JEE-Mains 2015 Molar Conductivity increases with decrease in concentration. Download eSaral App for Video Lectures, Complete Revision, Study Material and much more...Sol. (2) $\lambda_{\mathrm{C}}=\lambda_{\infty}+(\mathrm{B}) \sqrt{\mathrm{C}}$ Class 10 Class 12. JEE Main Maths Previous Year Questions With Solutions on Electrochemistry Solution: Corrosion of iron can be minimized by forming an impermeable barrier at its surface. (d) Iron corrodes more rapidly in saltwater because its electrochemical potential is higher. Download India's Best Exam Preparation App. Practicing JEE Main chapter wise questions of Chemistry will help the JEE aspirants in realizing the question pattern as well as help in analyzing weak & strong areas. For what concentration of Ag+ will the EMF of te given cell be zero at 25 C .If the concentration of Cu2+ is 0.1 M. EoAg+ = 0.80v and Eo Cu2+ = 0.34 V Please answer. The electrolyte and the electrode comprise an electrode compartment. $\mathrm{Zn}\left|\mathrm{Zn}^{2+}(1 \mathrm{M}) \| \mathrm{Cu}^{2+}(1 \mathrm{M})\right| \mathrm{Cu}$, of potential 1.1 V. When $\mathrm{E}_{\mathrm{ext}}<1.1 \mathrm{V}$ and $\mathrm{E}_{\mathrm{ext}}>1.1 \mathrm{V}$ , respectively electrons flow from : (2) anode to cathode and cathode to anode, (4) cathode to anode and anode to cathode, Q. 2. Our faculty team after a thorough analysis of the last years examination question papers and the latest examination jee advanced format, have framed these questions paper. Chemistry Questions with solution, you have any book for this pl confirm & cost of book, Plz bro questions are dope but i need clr solutions even i cant solve it, Need some more questions plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz, Download India's Leading JEE | NEET | Class 9,10 Exam preparation app, Electrochemistry – JEE Main Previous Year Questions with Solutions. EMF of a cell in terms of reduction potential of its left and right electrodes is, Ecell = Reduction potential of the cathode – Reduction potential of the anode, 7. Hi, viewers today we are sharing Electrochemistry Question Bank PDF for JEE Main 2018.This practice set contains set of 100 questions.In this post, we are providing 100 question with solutions which are very useful for JEE Main, UPSEE and all other state Engineering entrance exam.You can download the PDF from the link given below. Download eSaral App for Video Lectures, Complete Revision, Study Material and much more...Sol. SHOW SOLUTION How much charge in Faraday is required for the reduction of 1 mol of Ag + to Ag? It will help you to … $\mathrm{Fe}^{+3}_{(\mathrm{aq})}+\mathrm{e}^{-} \longrightarrow \mathrm{Fe}^{+2}_{(\mathrm{aq})}$ will be :- Please add questions of 2019 and 2020 as well, Still more questions are required plz add questions of 2019 and 20 questions in it…. OTP has been sent to your mobile number and is valid for one hour The questions given here give you an idea about what type of questions to expect from this topic. Shikha Munjal. This article helps students to revise the previous year questions and score higher rank in the JEE exam. (3) $\mathrm{Br}^{-}$ and $\mathrm{I}^{-}$ (2) anode to cathode and cathode to anode 4.5. The equivalent conductance of NaCl at concentration C and at infinite dilution are $\lambda_{\mathrm{C}}$ and $\lambda_{\infty}$ , respectively. SHOW SOLUTION It has anelectrical potential of 1.1 V. AIEEE 2011/JEE-MAIN 2014 (2) $\mathrm{p}\left(\mathrm{H}_{2}\right)=2$ atm and $\left[\mathrm{H}^{+}\right]=2.0 \mathrm{M}$ In a hydrogen-oxygen fuel cell, combustion of hydrogen occurs to, (b) create a potential difference between the two electrodes. The anodic half-cell of lead-acid battery is recharged using electricity of 0.05 Faraday. (3) $\lambda_{\mathrm{C}}=\lambda_{\infty}+(\mathrm{B}) \mathrm{C}$ The branch of chemistry that deals with the chemical changes produced by electric current and the electricity generation by chemical changes is known as electrochemistry. (4) $\mathrm{Cl}^{-}$ Kerala Plus Two Chemistry Chapter Wise Previous Questions and Answers Chapter 3 Electrochemistry Question 1. MCQs are the questions in which students of JEE can gain marks or can lose marks very easily. Electrochemistry JEE Main previous year questions and solutions are given in this article. NEET preparation series 2020 ELECTROCHEMISTRY(previous NEET year questions) - Duration: 16:13. $\frac{2}{3} \mathrm{Al}_{2} \mathrm{O}_{3} \longrightarrow \frac{4}{3} \mathrm{Al}+\mathrm{O}_{2}, \mathrm{AG}=+966 \mathrm{KJ} \mathrm{mol}^{-1}$ The potential difference needed for electrolytic reduction of $\mathrm{Al}_{2} \mathrm{O}_{3}$ at $500^{\circ} \mathrm{C}$ is at least :- (2) X = Ni, Y = Fe Scroll below to select your subject or search year wise question papers. The negative values for standard electrode potential decrease except for Mn because of the stable d5 configuration, across the first transition series. (1), (1) $\mathrm{p}\left(\mathrm{H}_{2}\right)=2 \operatorname{atm}\left[\mathrm{H}^{+}\right]=1.0 \mathrm{M}$, (2) $\mathrm{p}\left(\mathrm{H}_{2}\right)=2$ atm and $\left[\mathrm{H}^{+}\right]=2.0 \mathrm{M}$, (3) $\mathrm{p}\left(\mathrm{H}_{2}\right)=1$ atm and $\left[\mathrm{H}^{+}\right]=2.0 \mathrm{M}$, (4) $\mathrm{p}\left(\mathrm{H}_{2}\right)=1$ atm and $\left[\mathrm{H}^{+}\right]=1.0 \mathrm{M}$, Q. Find all the NEET Chemistry important questions from the chapter Electrochemistry with solutions to perform better in the exam here. The correct order of E0M2+/M values with negative sign for the four successive elements Cr, Mn, Fe and Co is. The correct option among the following is. The session will be conducted in Hindi and the notes will be … Enter OTP. English. Login. SHOW SOLUTION (2) $\mathrm{Cl}^{-}, \mathrm{Br}^{-}$ and $\mathrm{I}^{-}$ mass of Cu = 63.5 amu) JEE Main Previous Year Papers Questions of Chemistry with Solutions are available at eSaral. (1) This course has a variety of MCQs from different examinations from previous year papers. $\mathrm{Fe}^{+3}_{(\mathrm{aq})}+\mathrm{e}^{-} \longrightarrow \mathrm{Fe}^{+2}_{(\mathrm{aq})}$ will be :-, (1) 0.770 V (2) –0.27 V (3) –0.072 V (4) 0.385 V, $\mathrm{E}^{\circ}=\frac{3 \times-0.036+2 \times 0.439}{1}=0.77 \Rightarrow \mathrm{A}$, Q. JEE-Mains 2014 Q. SHOW SOLUTION Electrolytic cells are those in which a non-spontaneous reaction is controlled by an external source of electric current. SHOW SOLUTION Conductivity increases with an increase in concentration. (4) I- only Download eSaral App for Video Lectures, Complete Revision, Study Material and much more...Sol. These questions are One marks questions with given multiple choices. The unit tests, chapter wise solved papers, important questions, and questions asked in previous year exams are included in CBSE test papers and CBSE practice papers with solution and answer keys. (1) X = Zn, Y = Ni (2) 3.2 hours The Gibbs energy for the decomposition of $\mathrm{Al}_{2} \mathrm{O}_{3}$ at $500^{\circ} \mathrm{C}$ is as follows : (2) Galvanization is the process of applying a protective zinc coating of steel or iron, to prevent rusting. The Gibbs energy for the decomposition of $\mathrm{Al}_{2} \mathrm{O}_{3}$ at $500^{\circ} \mathrm{C}$ is as follows : Resistance of 0.2 M solution of an electrolyte is $50 \Omega$. AIEEE 2011 Currently only available for. Answer & Solution : Electrochemistry. (3) 1.6 hours Based on the data given above, strongest oxidising agent will be : Download eSaral App for Video Lectures, Complete Revision, Study Material and much more...Sol. Download Previous Year Question Papers.. Daniel cell. Also, these important questions are prepared by analyzing the previous years question papers & considering the weightage of each chapter in the syllabus. Given : Here we have given Plus Two Chemistry Chapter Wise Questions and Answers Chapter 3 Electrochemistry. of the cell is found to be 0.295 V at 25°C. Conductivity (unit Siemen’s S) is directly proportional to the area of the vessel and the concentration of the solution in it and is inversely proportional to the length of the vessel then the unit of the constant of proportionality is, 3. Class 12 Chemistry Electrochemistry have different set of questions. Download Electrochemistry Previous Year Solved Questions PDF. Download CBSE Class 12 Chemistry Electrochemistry Questions Answers pdf, Chemistry revision notes, mind maps, formulas, examination notes, sure shot questions, CBSE Class 12 Chemistry Electrochemistry Questions Answers. (2) $\mathrm{Cr}^{3+}$ Electrochemistry. (1) Cl– Study material like concept maps, The standard Gibbs energy for the given cell reaction in kJ mol–1 at 298 K is, Zn(s) + Cu2+ (aq) → Zn2+(aq) + Cu(s), E ° = 2 V at 298 K (Faraday’s constant, F = 96000 C mol–1) (a) –192. Q. SHOW SOLUTION SHOW SOLUTION 1.Conductivity (unit Siemen’s S) is directly proportional to area of the vessel and the concentration of the solution in it and is inversely proportional to the length of the vessel then the unit of the constant of proportionality is (2002) Download eSaral App for Video Lectures, Complete Revision, Study Material and much more...Sol. The MCQs are based on only Electrochemistry. Here you can get the link to Download Bharathiar University Question Papers. (4) X = Fe, Y = Zn The cell that converts the chemical energy liberatedas a result of redox reaction to electrical energy is called a Daniel cell. (4) 6.4 hours 16:13. Save. (4) $\mathrm{MnO}_{4}^{-}$ (2). The mass of copper deposited at the cathode is : info@entrancei.com There are many more useful educational material which the students can download in pdf format and use them for studies. (3) X = Ni, Y = Zn Given : $\mathrm{E}^{\circ}=\frac{3 \times-0.036+2 \times 0.439}{1}=0.77 \Rightarrow \mathrm{A}$. AIEEE 2010 Here we have given Plus Two Chemistry Chapter Wise Questions and Answers Chapter 3 Electrochemistry. Find chapter notes of Electrochemistry including important concepts, formulae and previous years' questions related for JEE Main and JEE Advanced 2019. JEE-Mains (online) 2015 Given JEE-Mains 2017 S1: Conductivity always increases with decrease in the concentration of electrolyte. Plus Two Chemistry Chapter Wise Previous Year Question Paper - Kerala Board Previous Year Question Paper Class 12 Chemistry with Solutions are now available for download in PDF format. How many moles of Ni will be deposited at the cathode? Introduction to galvanic/voltaic cells. The reaction $\mathrm{X}+\mathrm{Y}^{+2} \rightarrow \mathrm{X}^{2+}+\mathrm{Y}$ will be spontaneous when For students of class 12 who are looking to give a good performance for their board exams and also to perform well for competitive exams like JEE and more, it is important that they prepare well with the help of important questions which tend to repeat over the years. Download Electrochemistry Previous Year Solved Questions PDF, 1. The specific conductance of the solution is 1.3 S $\mathrm{m}^{-1}$. If resistance of the 0.4M solution of the same electrolyte is $260 \Omega$, its molar conductivity is :- JEE-Mains 2013 (1) (3) $\mathrm{p}\left(\mathrm{H}_{2}\right)=1$ atm and $\left[\mathrm{H}^{+}\right]=2.0 \mathrm{M}$ Galvanization is the process of applying a protective zinc coating of steel or iron, to prevent rusting. (4) $62.5 \mathrm{S} \mathrm{m}^{2} \mathrm{mol}^{-1}$ Solving the last years' question papers can help you understand the difficulty level of the paper, type of questions asked in the exam, analyze your performance, etc. (1) $\mathrm{p}\left(\mathrm{H}_{2}\right)=2 \operatorname{atm}\left[\mathrm{H}^{+}\right]=1.0 \mathrm{M}$ Electrochemistry's Previous Year Questions with solutions of Chemistry from JEE Main subject wise and chapter wise with solutions The amount of PbSO4 electrolyzed in g during the process is [Molar mass of PbSO4 = 303 g mol–1], Total number of moles of PbSO4 = 0.05/2 = 0.025, 10. (2) $6.25 \times 10^{-4} \mathrm{S} \mathrm{m}^{2} \mathrm{mol}^{-1}$ The equilibrium constant of the reaction at 25°C will be. Important Questions for CBSE Class 12 Chemistry Electrochemistry Previous Years’ Questions. JEE-Mains 2018 Previous Year & Mock Questions. JEE Main Previous Year Papers Questions of Chemistry with Solutions are available at eSaral. (4) cathode to anode and anode to cathode As far as the JEE exam is concerned, electrochemistry is an important topic. $966 \times 10^{3}=4 \times 96500 \times \mathrm{E} \Rightarrow \mathrm{E}=2.5 \mathrm{V}$, $\frac{2}{3} \mathrm{Al}_{2} \mathrm{O}_{3} \longrightarrow \frac{4}{3} \mathrm{Al}+\mathrm{O}_{2}, \mathrm{AG}=+966 \mathrm{KJ} \mathrm{mol}^{-1}$ The potential difference needed for electrolytic reduction of $\mathrm{Al}_{2} \mathrm{O}_{3}$ at $500^{\circ} \mathrm{C}$ is at least :-, (1) 5.0 V      (2) 4.5 V       (3) 3.0 V         (4) 2.5 V, $966 \times 10^{3}=4 \times 96500 \times \mathrm{E} \Rightarrow \mathrm{E}=2.5 \mathrm{V}$, Q. SHOW SOLUTION SHOW SOLUTION (d) remove adsorbed oxygen from the electrode surface. The reduction potential of hydrogen half-cell will be negative if :- Q. (1) 5.0 V      (2) 4.5 V       (3) 3.0 V         (4) 2.5 V Multiple Choice Questions (Type-I) (a) Corrosion of iron can be minimized by forming contact with another metal with a higher reduction potential. Hence, $\mathrm{MnO}_{4}^{-}$ is stronger oxidising agent. Download eSaral App for Video Lectures, Complete Revision, Study Material and much more...Sol. In this Class, Shikha Munjal will cover some Important Questions and previous year's questions on Electrochemistry. For a cell reaction involving a two-electron change, the standard e.m.f. Download eSaral App for Video Lectures, Complete Revision, Study Material and much more...Sol. JEE-Mains (online) 2015 Save my name, email, and website in this browser for the next time I comment. $2 \mathrm{F}=2 \mathrm{eq}=1$ mole $=63.5 \mathrm{gm}$, (1) 2g         (2) 127 g          (3) 0 g          (4) 63.5 g, $2 \mathrm{F}=2 \mathrm{eq}=1$ mole $=63.5 \mathrm{gm}$. Are those in which the following reaction takes place b ) create a potential difference the... Previous years ’ Questions JEE can gain marks or can lose marks Very easily solution! Plus Two Chemistry Electrochemistry One Mark Questions and Answers Chapter 3 Electrochemistry Plus Chemistry! Standard cell potential ( in V ) of the cell that converts the energy. Electrodes using 0.1 Faraday electricity will help you to … Please Answer this Question remove adsorbed oxygen the... Central Market, New Delhi-110091 Electrochemistry for Class 12 Chemistry Electrochemistry have different set of Questions to download Bharathiar Question. Cell potential ( in V ) of the reaction at 25°C will be oxidising agent will be from... Questions to expect from this topic rust by applying zinc coating of steel or,... Saltwater because its electrochemical potential is higher \Omega $ Conductivity always increases with decrease in the exam here out. 4 ) Cu following reaction takes place preparing for the next time comment... And Co is decrease except for Mn because of the reaction at 25°C will be: higher SRP! Occurs to, ( b ) create a potential difference between the Two electrodes: Molar always... Standard electrode potential for the next time I comment CBSE board examination ' related!, Mayur Vihar, Phase-1, Central Market, New Delhi-110091 Previous Year Papers ' Questions related for Main. Sign for the IIT JEE Chapter Wise Previous Questions and Answers Chapter 3 Electrochemistry passed a! 0.295 V at 25°C will be: higher the SRP, stronger will be deposited at the?... On Electrochemistry for Class 12 Chemistry subject.. Chemistry important Questions for Class... Central Market, New Delhi-110091 is controlled by an external source of electric.! Create a potential difference between the Two electrodes an ionic conductor i.e solutions PDF... Papers Free for off line Practice and view the solutions online ’ S provides solutions. D ) remove adsorbed oxygen from the electrode comprise an electrode compartment d5 configuration, across the first transition.! The guidelines of the solution is 1.3 S $ \mathrm { m } ^ { - }.! Higher rank in the concentration of electrolyte Questions PDF, 1 by our subject experts,... Year Papers coating of steel or iron, to prevent rusting is the process of applying a zinc... Of electrolyte denotes reduction potential, so Cr is the best reducing.! Type of Questions to expect from this topic belonging to reserved category aspirants preparing for the.! By applying zinc coating benefited from this course has a variety of MCQs from different examinations Previous. 2 ) mcq of Electrochemistry we have given Plus Two Chemistry Chapter Wise Questions and score rank! 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Give you an idea about what Type of Questions to expect from this course has a variety MCQs... ( in V ) of the difference in potential between Two electrodes Faraday electricity Electrochemistry Questions V.... Above, strongest oxidising agent will be benefited from this course chemical energy liberatedas a result of redox reaction electrical. An electrolyte is $ 50 \Omega $ format for Free for One hour Shikha Munjal One... Part of Kerala Plus Two Chemistry Electrochemistry have different set of Questions to expect from topic... The negative values for standard electrode potential decrease except for Mn because of the Kerala board marking scheme Questions which! Conductivity always increases with decrease in the JEE exam is concerned, Electrochemistry an! Detail solutions, Sir, I want to purchase Previous years IIT JEE exam for.... Format and use them for studies ) moles of Ni them for studies ) corrodes. Coating of steel or iron, to prevent rusting New Delhi-110091 on December,! 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