Preparing for the RRB Group D exam? Practice is the key to success! In this set, we have included some of the most important and commonly asked questions from the topic of Electrochemistry. These questions are taken from previous year exams like SSC, UPSC, and others, making them perfect for your Railway exam preparation.
Go through each question carefully and check the correct answers to boost your confidence and score better in the upcoming exam.
RRB Group D Practice Set: Important Electrochemistry Questions
Here are the MCQs:
1. What is the unit of relative conductivity?
(a) Ohm·cm¹
(b) Ohm·cm²
(c) Ohm⁻¹·cm
(d) Ohm⁻·cm⁻¹
2. What materials are used as electrodes in rechargeable batteries found in devices like torches and electric shavers?
(a) Nickel and cadmium
(b) Zinc and carbon
(c) Lead peroxide and lead
(d) Iron and cadmium
3. What is the anode in a dry cell made of?
(a) Copper
(b) Zinc
(c) Cadmium
(d) Graphite
4. What is the cathode of a lead storage battery made of?
(a) Zinc
(b) Lead
(c) Lead oxide
(d) Manganese dioxide
5. By which process is aluminium purified?
(a) Oxidation
(b) Distillation
(c) Electrolysis
(d) Ozone analysis
6. When NaCl is dissolved in water, what surrounds each Na⁺ ion?
(a) Cl⁻ ions
(b) Na⁺ ions
(c) Both Na⁺ and Cl⁻ ions
(d) H₂O molecules
7. Good conductors of electricity contain many free –
(a) Protons
(b) Neutrons
(c) Molecules
(d) Electrons
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8. In electro-refining, where does the pure metal get deposited?
(a) Cathode
(b) Anode
(c) Container
(d) Electrolyte
9. Which acid is used in lead storage cells?
(a) Phosphoric acid
(b) Hydrochloric acid
(c) Nitric acid
(d) Sulfuric acid
10. Which electrolyte is used during gold electroplating?
(a) Gold chloride
(b) Gold nitrate
(c) Gold sulfate
(d) Potassium aurocyanide
11. During electrolysis of aqueous copper sulfate solution using copper electrodes, what is produced?
(a) Copper at cathode and oxygen at anode
(b) Copper at anode and oxygen at cathode
(c) Copper at cathode and anode gets corroded
(d) Hydrogen at cathode and oxygen at anode
12. When a spoon is electroplated with nickel, the spoon is –
(a) Dipped in nickel sulfate solution
(b) Used as anode and a nickel rod as cathode
(c) Used as cathode and a pure nickel rod as anode
(d) Coated with nickel sulfate and dried
13. Which of the following is an example of a non-electronic conductor?
(a) Iron
(b) Gas carbon
(c) Copper sulfate
(d) Mercury
14. Which of the following acids is used as the electrolyte in a lead storage battery?
(a) Sulfuric acid
(b) Lactic acid
(c) Hydrochloric acid
(d) Nitric acid
15. What is mostly used in storage batteries?
(a) Copper
(b) Tin
(c) Lead
(d) Zinc
Also Read: 50 Must-Solve MCQs for SSC CGL 2025 – Boost Your Score
RRB Group D Practice Set: Important Electrochemistry Answers (MCQ)
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