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NEET UG Electrochemistry — practice questions — page 2

Explore 70 free Electrochemistry questions in NEET UG Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Electrochemistry questions and exercises with answers

Showing questions 31–60 of 70.

Assertion and reason: potentialsRead the answer and worked solution →Reading the definitions backRead the answer and worked solution →Complete the dilution behaviourRead the answer and worked solution →True or false: the standard scaleRead the answer and worked solution →Galvanic or electrolytic cell?Read the answer and worked solution →True or false: electrochemistryRead the answer and worked solution →Complete the standard cell potential relationRead the answer and worked solution →Complete the thermodynamic linksRead the answer and worked solution →What the Nernst equation is forRead the answer and worked solution →The standard electrode potential of the Standard Hydrogen Electrode (SHE) is defined as:Read the answer and worked solution →The Daniell cell (Zn-Cu) has E°cell = +1.10 V. Calculate ΔG° (F = 96500 C/mol):Read the answer and worked solution →Faraday's first law of electrolysis states that the mass deposited is:Read the answer and worked solution →The byproduct of a hydrogen-oxygen fuel cell (used in space + electric cars) is:Read the answer and worked solution →Order these electrodes by standard potential, lowest firstRead the answer and worked solution →True or false: conductivity on dilutionRead the answer and worked solution →Strong electrolyte or weak electrolyte?Read the answer and worked solution →Match each relation to what it linksRead the answer and worked solution →True or false: cells and electrodesRead the answer and worked solution →Tap every statement true of a galvanic cellRead the answer and worked solution →Assertion and reasonRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Which quantity is being described?Read the answer and worked solution →True or false: batteries, fuel cells and corrosionRead the answer and worked solution →True or false: the standard scaleRead the answer and worked solution →Galvanic or electrolytic cell?Read the answer and worked solution →True or false: electrochemistryRead the answer and worked solution →Match each electrode to the potential your syllabus givesRead the answer and worked solution →Assertion and reason: potentialsRead the answer and worked solution →Reading the definitions backRead the answer and worked solution →Kohlrausch's lawRead the answer and worked solution →

Worked practice questions

Assertion and reason: potentials

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Questions
  1. Reason
    ΔrG° equals −nF E°(cell), so a positive potential makes ΔrG° negative.
    Verdict
    Both are true; the reason explains the assertion.
    Assertion
    A positive standard cell potential indicates a spontaneous reaction.
  2. Reason
    The standard hydrogen electrode is assigned a potential of zero.
    Verdict
    Both are true; the reason explains the assertion.
    Assertion
    Electrode potentials are quoted relative to a reference.
  3. Reason
    Molar conductivity rises on dilution.
    Verdict
    Both are true; the reason does not explain the assertion.
    Assertion
    Corrosion is electrochemical.
The last round pairs true halves that do not explain one another. Source: syllabus Chemistry Part I, Ch 2 Electrochemistry.

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Reading the definitions back

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Questions
  1. Question
    The ionic conductor in a cell is called the
    Choices
    1. electrode
    2. electrolyte
    3. cathode
    Correct choice
    electrolyte
  2. Question
    A cell that converts chemical energy into electrical work is
    Choices
    1. electrolytic
    2. neither
    3. galvanic
    Correct choice
    galvanic
  3. Question
    Reduction takes place at the
    Choices
    1. cathode
    2. anode
    3. electrolyte
    Correct choice
    cathode
  4. Question
    Corrosion is best described as
    Choices
    1. purely physical
    2. an electrochemical phenomenon
    3. a nuclear process
    Correct choice
    an electrochemical phenomenon
Straight recall of the chapter's core terms. Source: syllabus Chemistry Part I, Ch 2 Electrochemistry.

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Complete the dilution behaviour

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Missing parts
  1. Answer
    decreases
    Choices
    1. decreases
    2. increases
    3. stays constant
  2. Answer
    increases
    Choices
    1. increases
    2. decreases
    3. stays constant
  3. Answer
    weak
    Choices
    1. weak
    2. strong
    3. all
Complete the statement
On dilution, conductivity {0} while molar conductivity {1}. The rise is very steep for {2} electrolytes in dilute solution.
The two curves behave oppositely, and the weak electrolyte's is the steep one. Source: syllabus Chemistry Part I, Ch 2 Electrochemistry.

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