Electrochemistry Test Online Mcqs Preparation

Electrochemistry Test Online Mcqs Preparation With Answers Start Below

Show paginator

Hide paginator

Question 1 of 15

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

A. Reduction potential

B. Both a and c

C. Standard reduction potential

D. Standard electrode potential

Question 1 of 15

Question 2 of 15

2. Gold and silver are least reactive due to

A. Positive reduction potential

B. Positive oxidation potential

C. Zero oxidation potential

D. Having large negative electrode potential

Question 2 of 15

Question 3 of 15

3. 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. -0.83 V

B. +1.66 V

C. +0.83 V

D. -1.66 V

Question 3 of 15

Question 4 of 15

4. Which of the following cell can convert chemical energy directly into electrical energy:

A. Lead storage battery

B. Daniel cell

C. Fuel cell

D. Mercury cell

Question 4 of 15

Question 5 of 15

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

A. Its fused chloride

B. Concentrated aqueous solution of its chloride

C. Dilute aqueous solution on of its chloride

D. Any solution

Question 5 of 15

Question 6 of 15

6. Iron can be prevented from rusting by:

A. Connecting iron to less electropositive metal, a case of cathodic protection

B. Connecting iron to less electropositive metal, a case of anodic protection

C. Connecting iron to more electropositive metal, a case of anodic protection

D. Connecting iron to more electropositive metal, a case of cathodic protection

Question 6 of 15

Question 7 of 15

7. The correct order of equivalent conductance at infinite dilution among LiCl, NaCl and KCl is:

A. NaCl > KCl > LiCl

B. LiCl > NaCl > KCl

C. LiCl > KCl > NaCl

D. KCl > NaCl > LiCl

Question 7 of 15

Question 8 of 15

8. 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 8 of 15

Question 9 of 15

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

A. Increases

B. Remain constant

C. Decreases

D. Depends upon the reaction conditions

Question 9 of 15

Question 10 of 15

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

A. Reduction potential of K is greater than hydrogen

B. All of the above are possible reasons

C. Hydrogen is more reactive than potassium

D. Reduction potential of potassium is less than hydrogen

Question 10 of 15

Question 11 of 15

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

A. No reaction occur

B. Cu and Fe both dissolve

C. Cu will be deposited

D. Fe is precipitated

Question 11 of 15

Question 12 of 15

12. Which of the following statement is correct?

A. None of these

B. Cu can replace Zn2+ in ZnSO4

C. Cu can replace H+ in H2SO4

D. Zn can replace Cu2+ in CuSO4

Question 12 of 15

Question 13 of 15

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

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

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

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

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

Question 13 of 15

Question 14 of 15

14. SHE acts as anode when connected with Cu electrode but cathode with Zn electrode because

A. Zn has less oxidizing potential than hydrogen and Cu more

B. Zn has less reduction potential than hydrogen and Cu more

C. Zn is above in electrochemical series than hydrogen and Cu below

D. All the above are possible reasons

Question 14 of 15

Question 15 of 15

15. Which can be replace hydrogen from dilute acids?

A. Zn

B. Pt

C. Au

D. None of these

Question 15 of 15

Electrochemistry Test Online Mcqs Preparation

Electrochemistry Test Online Mcqs Preparation With Answers Start Below

Related Study Posts:

Leave a Comment Cancel reply