Chemistry Electrochemistry Important MCQ Test 2020 -1

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Electrochemistry Important MCQ Test:

Here you can get Chemistry Electrochemistry Important MCQ Test based on NCERT Text book for Class XII. Electrochemistry Important Questions are very helpful to score high marks in board exams in chemistry. Here we have covered Important Questions on Electrochemistry for Class 12 Chemistry subject.

Chemistry Electrochemistry Important MCQ are given below.

  1. Which of the following statement is correct?
    • (i) ECell and ΔrG of cell reaction both are extensive properties.
    • (ii) ECell and ΔrG of cell reaction both are intensive properties.
    • (iii) ECell is an intensive property while ΔrG of cell reaction is an extensive property.
    • (iv) ECell is an extensive property while ΔrG of cell reaction is an intensive property.
  2. The difference between the electrode potentials of two electrodes when no current is drawn through the cell is called ___________.
    • (i) Cell potential
    • (ii) Cell emf
    • (iii) Potential difference
    • (iv) Cell voltage
  3. 5. Which of the following statement is not correct about an inert electrode in a cell?
    • (i) It does not participate in the cell reaction.
    • (ii) It provides surface either for oxidation or for reduction reaction.
    • (iii) It provides surface for conduction of electrons.
    • (iv) It provides surface for redox reaction.
  4. An electrochemical cell can behave like an electrolytic cell when ____________.
    • (i) Ecell = 0
    • (ii) Ecell > Eext
    • (iii) Eext > Ecell
    • (iv) Ecell = Eext
  5. Which of the statements about solutions of electrolytes is not correct?
    • (i) Conductivity of solution depends upon size of ions.
    • (ii) Conductivity depends upon viscosiy of solution.
    • (iii) Conductivity does not depend upon solvation of ions present in solution.
    • (iv) Conductivity of solution increases with temperature.
  6. Which cell will measure standard electrode potential of copper electrode?
    • (i) Pt (s) | H2 (g,0.1 bar) | H+ (aq.,1 M) || Cu2+(aq.,1M) | Cu
    • (ii) Pt(s) | H2 (g, 1 bar) | H+ (aq.,1 M) || Cu2+ (aq.,2 M) | Cu
    • (iii) Pt(s)| H2 (g, 1 bar) | H+ (aq.,1 M) || Cu2+ (aq.,1 M) | Cu
    • (iv) Pt(s) | H2 (g, 1 bar) | H+ (aq.,0.1 M) || Cu2+ (aq.,1 M) | Cu
  7. The quantity of charge required to obtain one mole of aluminium from Al2O3 is ___________.
    • (i) 1F
    • (ii) 6F
    • (iii) 3F
    • (iv) 2F
  8.  The cell constant of a conductivity cell _____________.
    • (i) changes with change of electrolyte.
    • (ii) changes with change of concentration of electrolyte.
    • (iii) changes with temperature of electrolyte.
    • (iv) remains constant for a cell.
  9. While charging the lead storage battery ______________.
    • (i) PbSO4 anode is reduced to Pb.
    • (ii) PbSO4 cathode is reduced to Pb.
    • (iii) PbSO4 cathode is oxidised to Pb.
    • (iv) PbSO4 anode is oxidised to PbO2.
  10.  

Multiple Choice Questions (Type-II)

Note : In the following questions two or more than two options may be correct.

  1. The positive value of the standard electrode potential of Cu2+/Cu indicates that ____________.
    • (i) this redox couple is a stronger reducing agent than the H+/H2 couple.
    • (ii) this redox couple is a stronger oxidising agent than H+/H2.
    • (iii) Cu can displace H2 from acid.
    • (iv) Cu cannot displace H2 from acid.
  2. Conductivity of an electrolytic solution depends on ____________.
    • (i) nature of electrolyte.
    • (ii) concentration of electrolyte.
    • (iii) power of AC source.
    • (iv) distance between the electrodes.
  3. What will happen during the electrolysis of aqueous solution of CuSO4 by using platinum electrodes?
    • (i) Copper will deposit at cathode.
    • (ii) Copper will deposit at anode.
    • (iii) Oxygen will be released at anode.
    • (iv) Copper will dissolve at anode.
  4. What will happen during the electrolysis of aqueous solution of CuSO4 in the presence of Cu electrodes?
    • (i) Copper will deposit at cathode.
    • (ii) Copper will dissolve at anode.
    • (iii) Oxygen will be released at anode.
    • (iv) Copper will deposit at anode.
  5. Molar conductivity of ionic solution depends on ___________.
    • (i) temperature.
    • (ii) distance between electrodes.
    • (iii) concentration of electrolytes in solution.
    • (iv) surface area of electrodes.
  6. For the given cell, Mg|Mg2+|| Cu2+|Cu
    • (i) Mg is cathode
    • (ii) Cu is cathode
    • (iii) The cell reaction is Mg + Cu2+ → Mg2+ + Cu
    • (iv) Cu is the oxidising agent
  7.  

Get Electrochemistry important questions with answers for Class 12 and other exams. View the Important Question bank for Class 11 & 12 Chemistry syllabus. These important questions will play significant role in clearing the concepts of Chemistry. This question bank is designed, keeping NCERT in mind and the questions are updated with respect to upcoming Board exams. You will get here all the important questions from each topic of chemistry. Learn all the concepts of Electrochemistry topic of class 12 with these important questions with answers. You can access the notes of each topic from Class 11 & 12. Click Here for Detailed Chapter-wise Notes of Chemistry for Class 11th, JEE & NEET. You can access free study material for all three subject’s Physics, Chemistry and Mathematics. Chemistryup.in provides you complete edge to prepare for Board and Competitive Exams like JEE, NEET, BITSAT, etc. We have transformed classroom in such a way that a student can study anytime anywhere. With the help of A1 we have made the learning Personalized, adaptive and accessible for each and every one. Visit Chemistryup.in Website to download or view free study material for JEE & NEET.


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