Electrolysis Quiz For Class 10

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| By Nxr2128
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Electrolysis Quiz For Class 10 - Quiz

How much do you know about electrolysis? Check out our wonderful electrolysis quiz, created especially for class 10th students? In the scientific study of chemistry, the process of electrolysis involves using a direct electric current to prompt a chemical reaction that otherwise would be non-spontaneous. Do you think you can answer all of the questions regarding electrolysis correctly in this quiz? Find out now with this quiz! Best of luck to you with this.


Questions and Answers
  • 1. 

    In electrolysis, only _____________ ions present can be discharged.

    • A.

      1 out of 4

    • B.

      2 out of 4

    • C.

      3 out of 4

    • D.

      4 out of 4

    Correct Answer
    B. 2 out of 4
    Explanation
    In electrolysis, only ions that are present in the electrolyte can be discharged. This means that not all ions in the electrolyte will undergo a chemical reaction and be discharged. The correct answer of "2 out of 4" suggests that only two out of the four ions present in the electrolyte will be discharged during electrolysis.

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  • 2. 

    What are the ions present in water?

    • A.

      H and OH

    • B.

      H+ and OH-

    • C.

      H2 and O

    • D.

      H2O

    Correct Answer
    B. H+ and OH-
    Explanation
    Water is a polar molecule, meaning it has a slightly positive end (hydrogen) and a slightly negative end (oxygen). This polarity allows water to dissociate into ions. H+ ions are formed when the hydrogen atom loses its electron, while OH- ions are formed when the oxygen atom gains an electron. Therefore, the correct answer is H+ and OH-.

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  • 3. 

    If the anions in an aqueous solution are _________ ions,  they will be ________.

    • A.

      Not halide, discharged

    • B.

      Halide, discharged

    • C.

      Sulfate, discharged

    • D.

      Copper, discharged

    Correct Answer
    B. Halide, discharged
    Explanation
    If the anions in an aqueous solution are halide ions, they will be discharged. This means that during electrolysis, halide ions will be attracted to the positive electrode (anode) and undergo a chemical reaction, resulting in the production of a halogen gas. This discharge occurs because halide ions have a higher tendency to lose electrons compared to other anions present in the solution.

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  • 4. 

    Which pair of electrolytes is not inert?

    • A.

      Mercury and Carbon

    • B.

      Mercury and Silver

    • C.

      Silver and Carbon

    • D.

      Copper and Silver

    Correct Answer
    D. Copper and Silver
    Explanation
    Copper and silver are not inert electrolytes because they can undergo chemical reactions in an electrolytic cell. When an electric current is passed through a solution containing copper and silver ions, copper ions will be reduced at the cathode, while silver ions will be oxidized at the anode. This results in the deposition of copper metal at the cathode and the dissolution of silver metal at the anode. In contrast, mercury, carbon, and silver are inert electrolytes and do not undergo such reactions.

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  • 5. 

    Which metal is used in electroplating cans to store food?

    • A.

      Silver

    • B.

      Chromium

    • C.

      Tin

    • D.

      Nickel

    Correct Answer
    C. Tin
    Explanation
    Tin is used in electroplating cans to store food because it is a non-toxic metal that is resistant to corrosion. It forms a protective layer on the surface of the can, preventing the food from coming into contact with the metal and altering its taste or quality. Tin also has good conductivity, making it suitable for the electroplating process.

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  • 6. 

    In the electrolysis of molten sodium chloride, what is the yellow green gas formed?

    • A.

      Oxygen

    • B.

      Chloride

    • C.

      Chlorine

    • D.

      Hydrogen

    Correct Answer
    C. Chlorine
    Explanation
    During the electrolysis of molten sodium chloride, chlorine gas is formed at the positive electrode (anode). This is because chloride ions (Cl-) are attracted to the positive electrode and undergo oxidation, releasing chlorine gas (Cl2). Therefore, the correct answer is chlorine.

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  • 7. 

    ______ are _________ at the anode and _______ at the cathode.

    • A.

      Metals, oxidized, reduced

    • B.

      Atoms, reduced, oxidized

    • C.

      Ions, oxidized, reduced

    • D.

      Ions, reduced, oxidized

    Correct Answer
    C. Ions, oxidized, reduced
    Explanation
    Ions are oxidized (lose electrons) at the anode, and they are reduced (gain electrons) at the cathode in electrochemical reactions, such as those in electrochemical cells and electrolysis. This is a fundamental concept in electrochemistry and the behavior of ions in such systems.

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  • 8. 

    A cathode is ____________ charged

    • A.

      Positively

    • B.

      Negatively

    • C.

      Neutrally

    • D.

      None

    Correct Answer
    B. Negatively
    Explanation
    A cathode is negatively charged because it is the electrode where reduction occurs during an electrochemical reaction. Reduction involves gaining electrons, which results in a negative charge on the cathode.

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  • 9. 

    An anode is __________ charged.

    • A.

      Positively

    • B.

      Negatively

    • C.

      Neutrally

    • D.

      None

    Correct Answer
    A. Positively
    Explanation
    An anode is positively charged because it is the electrode where oxidation occurs during an electrochemical reaction. Oxidation involves the loss of electrons, which results in a positive charge on the anode.

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  • 10. 

    Which of these is not an application of electrolysis?

    • A.

      Rust removal

    • B.

      Electroplating

    • C.

      Making leather

    • D.

      Manufacture of bleach

    Correct Answer
    C. Making leather
    Explanation
    Electrolysis is a process that involves the use of an electric current to drive a non-spontaneous chemical reaction. It is commonly used in rust removal, electroplating, and the manufacture of bleach. However, making leather does not require the use of electrolysis. Leather production involves various processes such as tanning, dyeing, and finishing, but none of these processes involve the use of an electric current to drive a chemical reaction. Therefore, making leather is not an application of electrolysis.

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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Oct 12, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Jan 30, 2010
    Quiz Created by
    Nxr2128
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