Electrochemistry

Electrochemical Cells MCQs with Answers

Welcome to the Electrochemical Cells MCQs with Answers, it helps learners quickly identify areas for improvement in Electrochemical Cells Online Test.

Electrochemical cells are devices that convert chemical energy directly into electrical energy through redox reactions. They are categorized into two main types: galvanic (or voltaic) cells and electrolytic cells.

In a quiz focused on electrochemical cells, MCQs cover fundamental concepts and applications. Galvanic cells multiple choice questions explore how spontaneous redox reactions generate electrical current and highlight components like anode, cathode, and salt bridge.

Electrolytic cells MCQs focus on non-spontaneous reactions driven by an external electric current to induce redox reactions, crucial for processes like electroplating and electrolysis.

Cell potentials exam questions delve into the measurement and calculation of cell potentials, emphasizing the relationship between standard electrode potentials, Gibbs free energy change, and the Nernst equation.

Redox reactions in cells MCQs examine specific redox processes within electrochemical cells, addressing the mechanisms behind electron transfer and ion movement across electrodes and electrolytes.

Electrochemical Cells Online Quiz

By presenting 3 options to choose from, Electrochemical Cells Quiz which cover a wide range of topics and levels of difficulty, making them adaptable to various learning objectives and preferences. You will have to read all the given answers of Electrochemical Cells Questions and Answers and click over the correct answer.

  • Test Name: Electrochemical Cells MCQ Quiz Practice
  • Type: Quiz Test
  • Total Questions: 40
  • Total Marks: 40
  • Time: 40 minutes

Note: Answer of the questions will change randomly each time you start the test. Practice each quiz test at least 3 times if you want to secure High Marks. Once you are finished, click the View Results button. If any answer looks wrong to you in Quiz, simply click on question and comment below that question, so that we can update the answer in the quiz section.

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Electrochemical Cells MCQs

Electrochemical Cells

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1 / 40

Which of the following statements about the Nernst equation is correct?

2 / 40

The salt bridge in an electrochemical cell usually contains _______.

3 / 40

What type of cell is used in electroplating?

4 / 40

The process of converting chemical energy into electrical energy in an electrochemical cell is called _______.

5 / 40

The standard electrode potential is measured with respect to a _______.

6 / 40

What is the purpose of a reference electrode in electrochemistry?

7 / 40

Which of the following statements about electrolysis is true?

8 / 40

An electrolytic cell operates with an external source of _______.

9 / 40

In a galvanic cell, the _______ is the site of reduction.

10 / 40

In the notation Zn(s)

11 / 40

Which of the following factors does NOT affect the emf of a cell?

12 / 40

The electrode potential of a half-cell is proportional to the _______.

13 / 40

What is the purpose of the porous barrier in a fuel cell?

14 / 40

Which of the following metals is commonly used as a cathode in electrochemical cells?

15 / 40

Which of the following is an example of a spontaneous reaction in an electrochemical cell?

16 / 40

Which of the following is NOT a primary battery?

17 / 40

The overall cell reaction in a galvanic cell proceeds _______.

18 / 40

The half-reaction occurring at the cathode in an electrochemical cell is the _______.

19 / 40

Which of the following factors affects the voltage of a voltaic cell?

20 / 40

What is the function of the separator in a battery?

21 / 40

The standard electrode potential of hydrogen is _______ volts.

22 / 40

What is the role of electrons in an electrochemical cell?

23 / 40

Which of the following is NOT a characteristic of a voltaic cell?

24 / 40

The half-reaction at the anode involves _______.

25 / 40

What is the purpose of an ion-selective membrane in a fuel cell?

26 / 40

Which type of cell allows a non-spontaneous reaction to occur using electrical energy?

27 / 40

What is the purpose of a salt bridge in an electrochemical cell?

28 / 40

What is the byproduct of the reaction in a hydrogen fuel cell?

29 / 40

In an electrochemical cell, oxidation occurs at the _______.

30 / 40

Which metal is commonly used as the standard in standard electrode potentials?

31 / 40

The electrode potential of a half-cell is measured against the _______.

32 / 40

What is the function of a porous barrier in an electrochemical cell?

33 / 40

The electrolyte in an electrochemical cell _______.

34 / 40

What is the function of the inert electrode in an electrolytic cell?

35 / 40

Which of the following cells is used as a power source for spacecraft and satellites?

36 / 40

Which of the following is NOT a factor affecting the rate of electrolysis?

37 / 40

The emf of a cell is _______.

38 / 40

In a Daniell cell, what is the anode made of?

39 / 40

What is the electrolyte in a lead-acid battery?

40 / 40

In which direction do electrons flow in an external circuit of a galvanic cell?

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Electrochemical Cells Flashcards

The process of converting chemical energy into electrical energy in an electrochemical cell is called _______.

Electrolysis

Which of the following is an example of a spontaneous reaction in an electrochemical cell?

Electroplating

In an electrochemical cell, oxidation occurs at the _______.

Cathode

What is the purpose of a salt bridge in an electrochemical cell?

To complete the circuit

The standard electrode potential is measured with respect to a _______.

Standard hydrogen electrode

In the notation Zn(s)

Zn^2+(aq)

Which of the following statements about the Nernst equation is correct?

It describes the rate of reaction in an electrochemical cell

The emf of a cell is _______.

The potential difference when no current is flowing

Which of the following factors does NOT affect the emf of a cell?

Concentration of reactants

The standard electrode potential of hydrogen is _______ volts.

-0.76 V

An electrolytic cell operates with an external source of _______.

Heat

Which of the following is NOT a primary battery?

Zinc-carbon

The half-reaction occurring at the cathode in an electrochemical cell is the _______.

Reduction

In a galvanic cell, the _______ is the site of reduction.

Cathode

The electrode potential of a half-cell is measured against the _______.

Standard hydrogen electrode

Which of the following is NOT a characteristic of a voltaic cell?

Requires an external power source

The electrode potential of a half-cell is proportional to the _______.

Mass of the electrode

Which type of cell allows a non-spontaneous reaction to occur using electrical energy?

Electrolytic cell

The overall cell reaction in a galvanic cell proceeds _______.

From cathode to anode

What is the function of a porous barrier in an electrochemical cell?

To separate the anode and cathode

The salt bridge in an electrochemical cell usually contains _______.

A strong electrolyte

What is the role of electrons in an electrochemical cell?

Transfer of charge

Which metal is commonly used as the standard in standard electrode potentials?

Zinc

In a Daniell cell, what is the anode made of?

Zinc

What type of cell is used in electroplating?

Electrolytic cell

What is the purpose of a reference electrode in electrochemistry?

Provide a standard potential

The half-reaction at the anode involves _______.

Oxidation

Which of the following statements about electrolysis is true?

It requires a spontaneous reaction

What is the function of the inert electrode in an electrolytic cell?

Conduct electricity

The electrolyte in an electrochemical cell _______.

Allows ions to move

Which of the following is NOT a factor affecting the rate of electrolysis?

Temperature

What is the purpose of an ion-selective membrane in a fuel cell?

Allows only certain ions to pass

Which of the following metals is commonly used as a cathode in electrochemical cells?

Platinum

What is the purpose of the porous barrier in a fuel cell?

Separate reactants

Which of the following cells is used as a power source for spacecraft and satellites?

Fuel cell

What is the electrolyte in a lead-acid battery?

Sulfuric acid

In which direction do electrons flow in an external circuit of a galvanic cell?

Anode to cathode

What is the function of the separator in a battery?

Prevent short circuits

Which of the following factors affects the voltage of a voltaic cell?

Concentration of electrolytes

What is the byproduct of the reaction in a hydrogen fuel cell?

Water

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