Preparing for the Joint Entrance Exam (JEE) can be a daunting task. With so many subjects to cover and so many topics to study, it can be challenging to know where to start. One essential topic in the JEE Mains syllabus is the Electrochemistry. In this article, we will provide 50+ MCQ questions on the Electrochemistry, along with detailed solutions to help you prepare for the JEE Mains exam.
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These 50+ MCQ questions are selected by the experts of studyrate.in and these are more difficult questions, which will help you to better understand Electrochemistry JEE Mains MCQ Questions with Answers.
Electrochemistry JEE Mains MCQ
Which of the following is not a redox reaction?
a) 2NaCl → 2Na + Cl2
b) Zn + CuSO4 → ZnSO4 + Cu
c) 2H2O → 2H2 + O2
d) 2HCl + Na2CO3 → 2NaCl + H2O + CO2
The standard electrode potential (E°) of a half-cell is a measure of:
a) Ion concentration in the half-cell
b) Current flowing through the half-cell
c) Cell potential of the galvanic cell
d) Reduction potential of the electrode
Which of the following statements about the Nernst equation is correct?
a) It relates the concentration of reactants to the equilibrium constant.
b) It determines the standard electrode potential of a half-cell.
c) It calculates the pH of a solution.
d) It relates the electrode potential to the concentration of reactants and products.
In the electrolysis of water, hydrogen gas is evolved at the:
a) Cathode and anode
b) Cathode only
c) Anode only
d) Neither cathode nor anode
The Faraday constant (F) represents the charge carried by:
a) One mole of electrons
b) One mole of protons
c) One mole of ions
d) One mole of any particle
Which of the following substances acts as an oxidizing agent?
a) Na
b) Fe
c) Cl2
d) H2
The cell potential (Ecell) of a galvanic cell can be calculated using the equation:
a) Ecell = E°cathode – E°anode
b) Ecell = E°anode – E°cathode
c) Ecell = E°cathode + E°anode
d) Ecell = E°anode + E°cathode
Which of the following is the correct representation of a cell notation?
a) Cu(s) | Cu2+(aq) || Ag+(aq) | Ag(s)
b) Ag(s) | Ag+(aq) || Cu2+(aq) | Cu(s)
c) Cu2+(aq) | Cu(s) || Ag(s) | Ag+(aq)
d) Ag+(aq) | Ag(s) || Cu(s) | Cu2+(aq)
Which of the following statements about the salt bridge in a galvanic cell is correct?
a) It allows the flow of electrons between the electrodes.
b) It completes the circuit and maintains electrical neutrality in the half-cells.
c) It prevents the migration of ions in the solution.
d) It provides a barrier to the flow of current.
The efficiency of an electrolytic cell is given by the ratio:
a) Amount of product obtained / Amount of reactant consumed
b) Amount of product obtained / Theoretical amount of product
c) Amount of reactant consumed / Amount of product obtained
d) Theoretical amount of product / Amount of product obtained
Which of the following is not a common reference electrode?
a) Standard hydrogen electrode (SHE)
b) Silver/silver chloride electrode (Ag/AgCl)
c) Calomel electrode (Hg2Cl2/Hg)
d) Platinum electrode (Pt)
The electrode potential of the standard hydrogen electrode (SHE) is defined as:
a) 0 V
b) +1 V
c) -1 V
d) +0.059 V
The process of the movement of cations towards the cathode in an electrolytic cell is called:
a) Reduction
b) Oxidation
c) Discharge
d) Migration
The process of the conversion of an element into its corresponding cation during a redox reaction is called:
a) Reduction
b) Oxidation
c) Discharge
d) Reduction potential
The standard electrode potential of a half-cell represents the:
a) Ability of the electrode to gain electrons
b) Ability of the electrode to lose electrons
c) Ability of the electrode to attract cations
d) Ability of the electrode to attract anions
Which of the following substances acts as a reducing agent?
a) Ag+
b) Cl-
c) H2O
d) Na+
Which of the following factors does not affect the cell potential (Ecell) of a galvanic cell?
a) Concentration of reactants and products
b) Temperature
c) Pressure
d) Nature of the electrodes and their surfaces
The balancing of redox reactions in acidic medium involves the addition of:
a) H2O molecules
b) OH- ions
c) H+ ions
d) e- (electrons)
Which of the following is true about a concentration cell?
a) The electrodes are made of different materials.
b) The cell potential is independent of the concentration of the electrolyte.
c) The cell potential is zero when the concentrations of the electrolyte are equal.
d) The cell potential is positive when the cathode concentration is higher than the anode concentration.
The process of depositing a layer of metal on another metal surface by electrolysis is called:
a) Electrolysis
b) Electroplating
c) Electrodeposition
d) Electrophoresis
Which of the following statements about corrosion is correct?
a) Corrosion is a reduction process.
b) Corrosion only occurs in the presence of air.
c) Corrosion can be prevented by using a metal with a lower reduction potential.
d) Corrosion is a reversible process.
In the reaction: 2HCl(aq) + 2e- → H2(g) + 2Cl-(aq), the reducing agent is:
a) HCl(aq)
b) H2(g)
c) Cl-(aq)
d) e-
Which of the following species is reduced in the reaction: Zn(s) + Cu2+(aq) → Zn2+(aq) + Cu(s)?
a) Zn(s)
b) Cu2+(aq)
c) Zn2+(aq)
d) Cu(s)
The standard reduction potential (E°) of a half-cell reaction is a measure of:
a) The rate of the reaction
b) The stoichiometry of the reaction
c) The electrode potential of the half-cell
d) The equilibrium constant of the reaction
.
In a galvanic cell, which electrode is the cathode?
a) The electrode with the higher reduction potential
b) The electrode with the lower reduction potential
c) The electrode where oxidation occurs
d) The electrode where reduction occurs
The cell potential of a galvanic cell is calculated as:
a) The sum of the reduction potentials of the two half-cells
b) The difference between the reduction potentials of the two half-cells
c) The sum of the oxidation potentials of the two half-cells
d) The difference between the oxidation potentials of the two half-cells
The Nernst equation relates the cell potential (Ecell) to the concentrations of reactants and products. It is given by:
a) Ecell = E°cell – (RT/nF) ln(Q)
b) Ecell = E°cell + (RT/nF) ln(Q)
c) Ecell = E°cell – (nF/RT) ln(Q)
d) Ecell = E°cell + (nF/RT) ln(Q)
The standard hydrogen electrode (SHE) is used as a reference electrode because:
a) It has a very high reduction potential
b) It is inert and does not participate in the redox reaction
c) It is easy to prepare and maintain
d) It has a constant temperature
The Faraday constant (F) represents the charge carried by:
a) One mole of electrons
b) One mole of protons
c) One mole of ions
d) One mole of neutrons
The number of electrons transferred in the following reaction: MnO4-(aq) + 8H+(aq) + 5e- → Mn2+(aq) + 4H2O(l) is:
a) 1
b) 2
c) 3
d) 5
Which of the following statements about concentration cells is correct?
a) They do not involve any redox reactions.
b) The cell potential is always zero.
c) They utilize a concentration gradient as the driving force.
d) The electrode potential does not depend on the concentration of species.
We hope there JEE MCQ of Class 12 : Electrochemistry will help you to score an excellent rank in JEE Mains and Advanced. If you have any queries feel free to write in the comments section. We at Study Rate are always ready to serve our students.
