Electrochemistry Test Online Mcqs Preparation

Electrochemistry Test Online Mcqs Preparation With Answers Start Below

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Question 1 of 15

1. Normal aluminum electrode coupled with normal hydrogen electrode gives an emf of 1.66 volts and deflection of needle towards Hydrogen. The standard electrode potential of aluminum is:

A. -1.66 V

B. +0.83 V

C. -0.83 V

D. +1.66 V

Question 1 of 15

Question 2 of 15

2. Greater the value of the standard reduction potential of the given species:

A. Greater is its tendency to accept electrons to undergo oxidation

B. Greater is its tendency to lose electrons to undergo oxidation

C. Greater is its tendency to lose electrons to undergo reduction

D. Greater is its tendency to accept electrons to undergo reduction

Question 2 of 15

Question 3 of 15

3. In a galvanic ell, the electrode occupying a lower position in the electrochemical series:

A. Reduction will take place on it

B. Oxidation will take place on it

C. Will act as cathode

D. Both a and b

Question 3 of 15

Question 4 of 15

4. Which one metal shows maximum oxidation state?

A. Ag

B. Cr

C. Mn

D. Hg

Question 4 of 15

Question 5 of 15

5. When an element is in contact with 1M aqueous solution of its own ions, at 298K then potential is called?

A. Both a and c

B. Standard reduction potential

C. Reduction potential

D. Standard electrode potential

Question 5 of 15

Question 6 of 15

6. The ability of elements to act as reducing agent _________ down to electrochemical series

A. Increases

B. Depends upon the reaction conditions

C. Remain constant

D. Decreases

Question 6 of 15

Question 7 of 15

7. The electrolysis product of molten NaCl at electrodes

A. H2, Cl2, and NaOH

B. Na and NaOH

C. Na and Cl2

D. H2 and Cl2

Question 7 of 15

Question 8 of 15

8. In a reaction Zn + HNO₃ → Zn(NO₃)₂ + NO + H₂O

A. N is oxidized

B. Hydrogen is reduced

C. Zn is reduced

D. N is reduced

Question 8 of 15

Question 9 of 15

9. Magnesium metal is extracted by the electrolysis of its:

A. Its fused chloride

B. Dilute aqueous solution on of its chloride

C. Concentrated aqueous solution of its chloride

D. Any solution

Question 9 of 15

Question 10 of 15

10. The cell in which electrical energy is converted into chemical energy is:

A. Volatic cell

B. Electrolytic cell

C. Galvanic cell

D. All of these

Question 10 of 15

Question 11 of 15

11. If a strip of Cu-metals is placed in a solution of FeSO₄ then

A. Fe is precipitated

B. Cu and Fe both dissolve

C. Cu will be deposited

D. No reaction occur

Question 11 of 15

Question 12 of 15

12. The oxidation state of carbon-atom in glucose is

A. +6

B. +4

C. None of these

D. -4

Question 12 of 15

Question 13 of 15

13. During the electrolysis of aqueous KNO₃, H₂ is produced at cathode instead of potassium due to

A. All of the above are possible reasons

B. Reduction potential of K is greater than hydrogen

C. Reduction potential of potassium is less than hydrogen

D. Hydrogen is more reactive than potassium

Question 13 of 15

Question 14 of 15

14. Gold and silver are least reactive due to

A. Positive reduction potential

B. Positive oxidation potential

C. Having large negative electrode potential

D. Zero oxidation potential

Question 14 of 15

Question 15 of 15

15. Halogens are place at lower level of electrochemical series, this indicates that

A. Halogens are oxidizing agent but bad reducing agents

B. All the above statements are correct

C. Halogens are good reducing agents

D. Halogens are good oxidizing agent as well as good reducing agents

Question 15 of 15

Electrochemistry Test Online Mcqs Preparation

Electrochemistry Test Online Mcqs Preparation With Answers Start Below

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