Neets Quiz 1 MCQ With Answers

41 Questions | Total Attempts: 1903

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Neets Quiz 1 MCQ With Answers - Quiz

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Questions and Answers
  • 1. 
    Which of the following is the purpose of an electrical cell?  
    • A. 

      To change mechanical energy to electrical energy

    • B. 

      To change chemical energy to electrical energy

    • C. 

      To change electrical energy to mechanical energy

    • D. 

      To change electrical energy to chemical energy

  • 2. 
    What are the three basic parts of a cell?
    • A. 

      Electrodes, electrolyte, container

    • B. 

      Electrodes, acid, water

    • C. 

      Anode, cathode, ions

    • D. 

      Anode, load, depolarizer

  • 3. 
    What term is given to the process that takes place inside a cell?
    • A. 

      Electromagnetic action

    • B. 

      Piezoelectric action

    • C. 

      Electromechanical action

    • D. 

      Electrochemical action

  • 4. 
    With respect to recharging a primary or secondary cell, of the following statements, which one is correct?
    • A. 

      The secondary cell can be recharged by passing current through it in the proper direction

    • B. 

      The primary cell can be recharged by passing current through it in the proper direction

    • C. 

      The secondary cell can only be recharged by changing the electrodes

    • D. 

      The primary cell can only be recharged by changing the electrolyte

  • 5. 
    What causes negative ions to be attracted to the cathode of a primary cell while the cell is discharging?
    • A. 

      A negative charge caused by a loss of electrons

    • B. 

      A negative charge caused by an excess of electrons

    • C. 

      A positive charge caused by a loss of electrons

    • D. 

      A positive charge caused by an excess of electrons

  • 6. 
    What causes hydrogen to be attracted to the anode of a primary cell when the cell is discharging?
    • A. 

      A negative charge caused by a loss of electrons

    • B. 

      A negative charge caused by an excess of electrons

    • C. 

      A positive charge caused by a loss of electrons

    • D. 

      A positive charge caused by an excess of electrons

  • 7. 
    What causes the cathode to be "eaten away" in the primary cell while the cell is discharging?
    • A. 

      The material of the cathode combines with the negative ions to form a new substance.

    • B. 

      The material of the cathode dissolves in the electrolyte.

    • C. 

      The material of the cathode leaves the negative terminal of the cell and goes through the load to the anode.

    • D. 

      Bacteria in the electrolyte erodes the material in the cathode.

  • 8. 
    The primary cell is completely discharged when which of the following conditions exists?
    • A. 

      The cathode is completely eaten away

    • B. 

      The active ingredient in the electrolyte is used up

    • C. 

      The voltage of the cell is reduced to zero

    • D. 

      Each of the above

  • 9. 
    In a zinc-carbon primary cell, what is the function of the carbon electrode?
    • A. 

      To generate electrons

    • B. 

      To supply a return path for current

    • C. 

      To speed electrolysis

    • D. 

      To collect hydrogen

  • 10. 
    The lead-acid cell is an example of which of the following types of cells?
    • A. 

      The dry cell

    • B. 

      The voltaic cell

    • C. 

      The primary cell

    • D. 

      The secondary cell

  • 11. 
    In a fully charged lead-acid cell, what is the composition of the anode, cathode, and electrolyte respectively?
    • A. 

      Zinc, carbon, and water

    • B. 

      Carbon, lead, sulfuric acid and water

    • C. 

      Lead peroxide, sponge lead, sulfuric acid, and water

    • D. 

      Nickel, cadmium, potassium hydroxide, and water

  • 12. 
    Which of the following actions will recharge a secondary cell?
    • A. 

      Adding more water to the electrolyte

    • B. 

      Adding more active ingredient to the electrolyte

    • C. 

      Connecting the negative terminal of a voltage source to the cathode of the cell and the positive terminal of the voltage source to the anode of the cell

    • D. 

      Connecting the negative terminal of a voltage source to the anode of the cell and the positive terminal of the voltage source to the cathode of the cell

  • 13. 
    When all the lead sulfate in a lead-acid cell is converted to sulfuric acid, lead peroxide, and sponge lead, what is the condition of the cell?
    • A. 

      Fully charged

    • B. 

      Discharged

    • C. 

      Sulfated

    • D. 

      Unusable

  • 14. 
    Polarization has what effects on an electrical cell?
    • A. 

      Decreases internal resistance, thereby increasing the output voltage

    • B. 

      Decreases internal resistance, thereby decreasing the output voltage

    • C. 

      Increases internal resistance, thereby increasing the output voltage

    • D. 

      Increases internal resistance, thereby decreasing the output voltage

  • 15. 
    Which of the following methods is used to control polarization in a cell?
    • A. 

      Venting the cell

    • B. 

      Heating the electrolyte

    • C. 

      Adding mercury to the electrode material

    • D. 

      Using an electrolyte that absorbs oxygen

  • 16. 
    Which of the following is caused by local action in a cell?
    • A. 

      Shelf life is reduced

    • B. 

      Hydrogen is generated in large quantities

    • C. 

      Impurities rise to the surface of the electrolyte

    • D. 

      Mercury coating of the zinc electrode is worn away

  • 17. 
    In a dry cell, what is the consistency of the electrolyte?
    • A. 

      Solid

    • B. 

      Liquid

    • C. 

      Paste

    • D. 

      Powder

  • 18. 
    What serves as the cathode in a common type of dry cell?
    • A. 

      Carbon electrode

    • B. 

      Zinc container

    • C. 

      Steel cover

    • D. 

      Nickel terminal

  • 19. 
    How should the dry cell be stored to obtain maximum shelf life?
    • A. 

      In a dark container

    • B. 

      In a heated cabinet

    • C. 

      In a ventilated area

    • D. 

      In a refrigerated space

  • 20. 
    The blotting paper in a dry cell serves which of the following purposes?
    • A. 

      Separates the paste from the zinc

    • B. 

      Permits the electrolyte from the paste to filter through to the zinc slowly

    • C. 

      Both 1 and 2 above

    • D. 

      Keeps the electrolyte dry

  • 21. 
    Of the following characteristics, which one describes the mercury cell?
    • A. 

      It is physically one of the largest cells

    • B. 

      It has a very stable output voltage

    • C. 

      It is designed to be rechargeable

    • D. 

      It produces a large amount of current but has a short shelf life

  • 22. 
    Which of the following describes the shorting of a cell?
    • A. 

      Decreasing the length of a cell

    • B. 

      Connecting the anode and cathode together without a load

    • C. 

      Using the cell below its full potential

    • D. 

      Providing a recharge voltage that is not sufficient to recharge the cell

  • 23. 
    What is/are the advantages(s) of using a manganese-dioxide-alkaline- zinc cell over the zinc-carbon cell?
    • A. 

      Better voltage stability

    • B. 

      Longer storage life

    • C. 

      Operates over a wide temperature range

    • D. 

      All the above

  • 24. 
    What is the common name for manganesedioxide- alkaline-zinc cell?
    • A. 

      Alkaline cell

    • B. 

      Long-life cell

    • C. 

      Moz cell

    • D. 

      Manganese-dioxide cell

  • 25. 
    Which of the following factors should be considered when selecting a primary cell as a power source?
    • A. 

      Power requirement

    • B. 

      Type of electrolyte used

    • C. 

      Container material

    • D. 

      All of the above

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