What is electroplating? What is the cathode in the electroplating of silver over a copper material? [2+1]
WBBSE
Class X
Physical Science
Electrolysis
03 Mark
2022
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
1/12
Q.
Why fused sodium chloride can conduct electricity?
A.
Fused sodium chloride can conduct electricity because, when it is melted (fused),...
Q.
What is meant by strong electrolyte?
A.
Strong Electrolyte A substance that completely dissociates into ions in water and...
Q.
The electrical conductivity of solid NaCl is greater than the electrical conductivity of fused NaCl....
A.
False. The electrical conductivity of fused NaCl is greater than that of...
Q.
Match the Right column with the Left column
A.
2.11.1 Acetic acid → (b) Weak electrolyte 2.11.2 Glass → (a) non-conductor...
Q.
During electrolysis (a) oxidation occurs at the cathode and reduction occurs at the anode (b)...
A.
d. Reduction occurs at the cathode and oxidation occurs at the anode....
Q.
Acetic acid is a weak electrolyte because in an aqueous solution acetic acid is (a)...
A.
(c) Partially dissociated Explanation: Acetic acid (CH₃COOH) is a weak electrolyte because...
Q.
The order of oxidising properties of Cl (17), I(53), F(9), Br(35) belonging to group 17...
A.
(d) F > Cl > Br > I Explanation: In Group 17...
Q.
What is the purpose of Electro-plating? What electrolyte is used to plate gold on any...
A.
The purpose of electroplating is: To improve the appearance of the surface....
Q.
Write the reaction occurring at the cathode in the electrolysis of acidulated water using platinum...
A.
In the electrolysis of acidulated water, the reaction occurring at the cathode...
Q.
What materials are used as cathode, anode and electrolyte during electroplating of a brass spoon...
A.
During the electroplating of a brass spoon with nickel: Cathode: Brass spoon...
Q.
Why does an aqueous solution of HCl gas conduct electricity?
A.
An aqueous solution of HCl gas conducts electricity because HCl dissociates into...
Q.
In which electrode docs oxidation take place during electrolysis of water ?
A.
During the electrolysis of water, oxidation takes place at the anode. OR...