Electrochemistry Test Online Mcqs Preparation

Electrochemistry Test Online Mcqs Preparation With Answers Start Below

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Question 1 of 15

1. Coinage metals have least reactivity because they have:
A.
B.
C.
D.

Question 1 of 15

Question 2 of 15

2. Which of the following cell can convert chemical energy directly into electrical energy:
A.
B.
C.
D.

Question 2 of 15

Question 3 of 15

3. If the sum of Eo values of the two half cells is negative, then:
A.
B.
C.
D.

Question 3 of 15

Question 4 of 15

4. In a galvanic ell, the electrode occupying a lower position in the electrochemical series:
A.
B.
C.
D.

Question 4 of 15

Question 5 of 15

5. 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.
B.
C.
D.

Question 5 of 15

Question 6 of 15

6. Magnesium metal is extracted by the electrolysis of its:
A.
B.
C.
D.

Question 6 of 15

Question 7 of 15

7. Which of the following statement is true about galvanic cell:
A.
B.
C.
D.

Question 7 of 15

Question 8 of 15

8. Iron can be prevented from rusting by:
A.
B.
C.
D.

Question 8 of 15

Question 9 of 15

9. Which of the following statement is correct?
A.
B.
C.
D.

Question 9 of 15

Question 10 of 15

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

Question 10 of 15

Question 11 of 15

11. β€œAl” metal is extracted from its ________ during electrolysis
A.
B.
C.
D.

Question 11 of 15

Question 12 of 15

12. The oxidation potential of Mg and Al are +2.37 and 1.66V, respectively. The Mg is chemical reaction:
A.
B.
C.
D.

Question 12 of 15

Question 13 of 15

13. Standard hydrogen electrode has an arbitrary fixed potential of:
A.
B.
C.
D.

Question 13 of 15

Question 14 of 15

14. In a reaction Zn + HNO3 β†’ Zn(NO3)2 + NO + H2O
A.
B.
C.
D.

Question 14 of 15

Question 15 of 15

15. Gold and silver are least reactive due to
A.
B.
C.
D.

Question 15 of 15


 

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