QQuestion
What is electroplating? What is the cathode in the electroplating of silver over a copper material? [2+1]
Exam-ready answer • 03 Mark
✓Answer
Electroplating is a process that uses electric current to deposit a layer of metal onto a surface. This technique is often used to enhance the appearance, corrosion resistance, and conductivity of the material being plated.
In the electroplating of silver over copper, the copper object being coated serves as the cathode.
Related Questions
More WBBSE Easy level questions
Why fused sodium chloride can conduct electricity?
What is meant by strong electrolyte? [2] OR What are meant by cathode and anode electrodes? [2]
Write whether the following statement is True or False : The electrical conductivity of solid NaCl is greater than the electrical conductivity of fused NaCl.
Match the Right column with the Left column : [1 × 4 = 4] Left Column Right Column 2.11.1 Acetic acid (a) non-conductor of electricity 2.11.2 Glass (b) Weak electrolyte 2.11.3 Most electro-negative element (c) Krypton 2.11.4 One Noble Element (d) Fluorine
During electrolysis (a) oxidation occurs at the cathode and reduction occurs at the anode (b) oxidation occurs at both the electrodes (c) reduction occurs at both the electrodes (d) reduction occurs at the cathode and oxidation occurs at the anode.
Acetic acid is a weak electrolyte because in an aqueous solution acetic acid is (a) non-conductor of electricity (b) completely dissociated (c) partially dissociated (d) not dissociated
The order of oxidising properties of Cl (17), I(53), F(9), Br(35) belonging to group 17 of long periodic table is (a) F < Cl < Br < I (b) Cl > I > F > Br (c) Cl > F > Br > I (d) F > Cl > Br > I
What is the purpose of Electro-plating? What electrolyte is used to plate gold on any substance?
Write the reaction occurring at the cathode in the electrolysis of acidulated water using platinum electrodes. Why is acidulated water instead of pure water used for electrolysis? [1+2] OR Write the reactions occurring at cathode and anode in the electrolysis of the aqueous solution of CuSO4 using Cu - electrodes. What is used as anode in refining of impure copper metal by the process of electrolysis? [2+1]
What materials are used as cathode, anode and electrolyte during electroplating of a brass spoon with nickel?
Why does an aqueous solution of HCl gas conduct electricity?
In which electrode does oxidation take place during electrolysis of water ? OR Which one between AC and DC is used in electrolysis ?
Small steps build strong concepts.