2. Faraday's Laws express the ----- results of electrolysis.
(A) qualitative
(B) quantitative
(C) volumetric
(D) theoretical
3. What does a chemical cell produce?
(A) e.m.f
(B) electrons
(C) chemical reaction
(D) chemical energy
4. The passage of electricity through electrolytes is usually accompanied by -------.
(A) physical changes
(B) heat
(C) combination
(D) chemical decomposition
5. Articles to be electroplated are connected to the -------.
(A) cathode
(B) anode
(C) electrode
(D) electrolyte
6. What is correct cathode reaction for the electrolysis of molten sodium chloride using Pt electrodes?
(A) 2H⁺ +2ē → H₂
(B) Na⁺ + ē → Na
(C) Na → Na⁺ + ē
(D) 2Cl⁻ → Cl₂ + 2ē
7. In silver plating, ------- at the anode.
(A) oxygen is evolved
(B) hydrogen is evolved
(C) silver dissolved
(D) silver is deposited
8. The ions discharged at Pt cathode and Pt anode in electrolysis of dilute copper(II)sulphate solution are -------.
(A) H⁺ and OH⁻
(B) H⁺ and SO₄²⁻
(C) Cu²⁺ and SO₄²⁻
(D) Cu²⁺ and OH⁻
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