Question 1:

What is corrosion?

Explanation: Corrosion is the process of metal reacting with oxygen in the presence of water or air, leading to the deterioration of the metal.

Question 2:

Which of the following metals is the most susceptible to corrosion?

Explanation: Iron is the most susceptible to corrosion among the given options. It readily reacts with oxygen and water to form iron oxide, commonly known as rust.

Question 3:

What is the purpose of electroplating?

Explanation: Electroplating is used to enhance the appearance of an object, provide a protective coating, and prevent corrosion. It involves depositing a layer of metal onto the surface of an object using an electrochemical process.

Question 4:

Which metal is commonly used as the coating material in electroplating?

Explanation: The metal commonly used as the coating material in electroplating is chromium. It is known for its corrosion resistance and attractive appearance.

Question 5:

Which of the following techniques can help prevent corrosion?

Explanation: All of the above techniques, namely painting, galvanization, and cathodic protection, can help prevent corrosion by creating a barrier or sacrificial protection to the metal surface.