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| 1. |
Which effect of current is used as electroplating |
| Answer» <html><body><p><strong>Answer:</strong></p><p>Electroplating is a process that uses an electric current to reduce dissolved metal cations so that they form a thin coherent metal coating on an electrode. The term is also used for electrical oxidation of anions on to a solid substrate, as in the formation of silver chloride on silver wire to make silver/silver-chloride electrodes. Electroplating is primarily used to change the surface <a href="https://interviewquestions.tuteehub.com/tag/properties-11511" style="font-weight:bold;" target="_blank" title="Click to know more about PROPERTIES">PROPERTIES</a> of an object (such as abrasion and wear <a href="https://interviewquestions.tuteehub.com/tag/resistance-1186351" style="font-weight:bold;" target="_blank" title="Click to know more about RESISTANCE">RESISTANCE</a>, corrosion <a href="https://interviewquestions.tuteehub.com/tag/protection-16062" style="font-weight:bold;" target="_blank" title="Click to know more about PROTECTION">PROTECTION</a>, lubricity, aesthetic qualities), but may also be used to build up thickness on undersized parts or to form objects by electroforming.</p><p></p><p>The process used in electroplating is called electrodeposition. It is analogous to a concentration <a href="https://interviewquestions.tuteehub.com/tag/cell-25680" style="font-weight:bold;" target="_blank" title="Click to know more about CELL">CELL</a> acting in reverse. The part to be plated is the cathode of the circuit. In one <a href="https://interviewquestions.tuteehub.com/tag/technique-1240417" style="font-weight:bold;" target="_blank" title="Click to know more about TECHNIQUE">TECHNIQUE</a>, the anode is made of the metal to be plated on the part. Both components are immersed in a solution called an electrolyte containing. </p><p><strong></strong></p><p></p></body></html> | |