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Electrochemistry MCQs questions and answers

 1.  During the electrolysis of Cu₂SO₄ (Copper Sulphate)  substance deposited at the anode:-

 A. Hydrogen

 B. copper

 C. Oxygen

 D. sulphate

 Ans: C. Oxygen


 2. Which of the following solution does not conduct electricity:-

 A. Urea

 B. Benzene

 C. sugar

 D. all three

 Ans: D. All three


 3.The material on which the electroplating is to be done, that material is made of:-

 A. Anode

 B. cathode

 Ans: B. Cathode


 4. On electrolysis of sodium chloride, Na⁺ ions will be deposited in:-

 A. cathode

 B. anode

 Ans: A. Cathode


 5. Electric current flows in an electrolytic material:-

 A. By electrons.

 B. by protons.

 C. by neutrons.

 D. by ions.

 Ans: D. By ions.


 6. The total charge  of 1 mole of electrons is equal to:-

 A. 96000 faraday

 B. 69600Faraday

 C. 96500 Faraday

 D. 96700 Faraday

 Ans: C. 96500 Faraday


 7. If the substance Q coulomb in the electrode in W quantity accumulates due to the flow of current, then according to Faraday's law of electrolysis:-

 A.  W∝ 1/Q

 B. W ∝Q

 C. W∝ Q²

 D.  W∝ Q³

 Ans: B. W ∝Q


 8. How many coulombs are in 1 faraday :-

 A. 96700 coulomb

 B. 90000 coulombs

 C. 10000 coulombs

 D.  96500 coulomb

 Ans: D. 96500 coulomb


 9. Which of the following metals has the highest electrical conductivity :-

 A. iron

 B. copper

 C. silver

 D. aluminum

 Ans: C. Silver


 10. Which of the following is the object of electroplating :-

 A. decoration

 B. protection

 C. repair

 D. all three

 Ans: D. All three


 11. Where does the reduction take place in the electrolysis process:-

 A. cathode

 B. anode

 Ans: A. Cathode


 12. Where in the process of electrolysis, oxidation takes place:-

 A. Anode

 B. cathode

 Ans: A. Anode


 13. Which of the following is a weak electrolyte:-

 A. Sodium chloride

 B. Hydrochloric acid

 C. Copper sulfate

 D. Acetic acid

 Ans: D. Acetic Acid


 14. Such an electrolyte whose solution completely dissociates into ions is called :-

 A. Strong electrolyte

 B. weak electrolyte

 Ans: A. Strong electrolytes


 15. In the electrolysis process, the electrode which is connected to the negative pole of the battery is called:-

 A. Anode

 B. cathode

 Ans: B. Cathode


 16. In the electrolysis process, the electrode which is connected to the positive pole of the battery is called :-

 A. Anode

 B. cathode

 Ans: A. Anode


 17. The process in which electrolysis is carried out is called :-

 A. electrolytic cell

 B. electric generator

 C. Battery

 D. electrolytic

 Ans: A. Electrolytic cell


 18. The device in which chemical process is done to generate electricity is called :-

 A. electric motor

 B. Transformer

 C. electrolytic cell

 D. electrochemical cell or galvanic cell

 Ans: D. Electrochemical cell or Galvanic cell

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