12th Chemistry Electro Chemistry Most VVI Objective Question Chapter Wise
3. ELECTRO CHEMISTRY
1. In galvanic cell, anode is :
(A) Negative electrode
(B) Positive electrode
(C) Neutral electrode
(D) None of these
| Answer :- (A) |
2. The cell which involves the conversion of chemical energy into electrical energy is called :
(A) Electrolytic cell
(B) Galvanic cell
(C) Conductivity cell
(D) All of these
| Answer :- (B) |
3. When flow of electric current in a conductor is through flow of electron then, the conductor is called:
(A) Metallic conductor
(B) Electrolytic conductor
(C) Bad conductor
(D) None of these
| Answer :- (A) |
4. If 96500 coulomb electricity is passed through CuSO4 Solution, it will liberate.
(A) 63.5 gm of Cu
(B) 31.76 gm of Cu
(C) 96500 gm of Cu
(D) 100 gm of Cu
| Answer :- (B) |
5. Fused NaCl on electrolysis gives …… on cathode.
(A) Chlorine
(B) Sodium
(C) Sodium amalgam
(D) Hydrogen
| Answer :- (B) |
6. In an aqueous solution hydrogen (H) will not reduce :
(A) Fe3+
(C) Zn2+
(B) Cu2+
(D) Ag
| Answer :- (A) |
7. Which of the following is a secondary cell ?
(A) Leclanche cell
(B) Lead storage battery
(C) Concentration cell
(D) All of these
| Answer :- (B) |
8. Faraday’s second law of electrolysis is related to :
(A) Atomic number of cation
(B) Speed of cation
(C) Speed of anion
(D) Equivalent weight of electrolyte
| Answer :- (D) |
9. The molar conductivity is maximum for the solution of concentration :
(A) 0.004 M
(B) 0.002 M
(C) 0.005 M
(D) 0.001 M
| Answer :- (D) |
10. Which has the maximum standard oxidation potential ?
(A) Zn
(B) Cu
(C) Ag
(D) Mg
| Answer :- (D) |
11. The quantity of charge required to obtain one mole of aluminium from Al2O3 is …….
(A) 1 F
(B) 6 F
(C) 3 F
(D) 2 F
| Answer :- (C) |
12. One Faraday electricity equal to how much Coulombs ?
(A) 96550
(B) 96500
(C) 96000
(D) 95500
| Answer :- (B) |
13. When one faraday of electric current is passed, the mass deposited, is equal to :
(A) One gram equivalent
(B) One gram mole
(C) electrochemical equivalent
(D) Half gram equivalent
| Answer :- (C) |
14. The electrode through which electrons enter into electrolytic solution is:
(A) Cathode
(B) Anode
(C) May be anode cathode
(D) None
| Answer :- (A) |
15. A dilute aqueous solution of sodium fluoride is electrolysed, the products at the anode and cathode are :
(A) F, Na
(B) F2, H2
(C) O2 , Na
(D) O2, H2
| Answer :- (B) |
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