Question

Rusting of iron can be prevented by":- , 1) PAINTING 2) GALVANISATION 3) ALLOYING 4) ELECTROLYTIC REFINING Which of the above are correct?​

Answer 1

Answer:

painting

Explanation:

because it forms a layer prevents the entering of water to the iron and prevents rusting

Answer 2

Answer:

The correct options are 1, 2, and 3.

The rusting of iron can be prevented by painting, galvanization, and alloying.

Explanation:

• Galvanization is the process of depositing a layer of zinc on iron to prevent rusting. Iron pipes used in homes to carry water are galvanized to prevent rusting.

• Alloying is the process of mixing iron with other metals to form alloys that are more resistant to rusting than pure iron.

• Painting is another method used to prevent rusting. A coating of paint prevents oxygen and moisture from coming into contact with the iron surface, thus preventing rust formation.

• Electrolytic refining is not a method used to prevent rusting. It is a process used for purifying metals such as copper and silver by passing an electric current through a solution containing ions of the metal.

• Zinc can be obtained through electrolytic refining, which can then be used for galvanization.

Therefore, options 1, 2, and 4 are incorrect as electrolytic refining is not a method used to prevent rusting.

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