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FAQs on Electrochemistry MCQ - Additional Documents & Tests for IIT JAM

1. What is electrochemistry?
Ans. Electrochemistry is the branch of chemistry that deals with the study of the relationship between electricity and chemical reactions. It involves the use of redox reactions, where electrons are transferred between species, to convert chemical energy into electrical energy or vice versa.
2. What are the applications of electrochemistry?
Ans. Electrochemistry has several applications in various fields. Some of the common applications include electroplating, batteries and fuel cells, corrosion prevention, electrolysis, and sensors. It is also used in the production of chemicals and metals, as well as in the field of medicine for electroanalysis and drug delivery systems.
3. How does electroplating work?
Ans. Electroplating is a process in which a metal coating is deposited onto an object using an electric current. It involves placing the object to be plated (cathode) in a solution containing metal ions of the desired plating metal. When an electric current is applied, the metal ions are reduced at the cathode, forming a layer of metal coating on the object.
4. What is a battery and how does it work?
Ans. A battery is a device that converts chemical energy into electrical energy through a series of electrochemical reactions. It typically consists of two electrodes, an anode (negative electrode) and a cathode (positive electrode), immersed in an electrolyte solution. During discharge, chemical reactions occur at the electrodes, resulting in the flow of electrons through an external circuit, generating an electric current.
5. What is corrosion and how does electrochemistry help prevent it?
Ans. Corrosion is the process of gradual deterioration of a metal due to chemical reactions with its environment. Electrochemistry plays a crucial role in preventing corrosion through methods such as cathodic protection and sacrificial anodes. Cathodic protection involves making the metal to be protected the cathode of an electrochemical cell, while sacrificial anodes are more reactive metals that are connected to the metal to be protected, sacrificing themselves to prevent corrosion.
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