The rusting of metals by contact and chemical union with oxygen in the damp atmosphere is known as:

corrosion

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sublimation

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oxidation

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none of the above

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Solution

The correct option is B corrosion
Corrosion is a natural process, which converts a refined metal to a more chemically-stable form, such as its oxide, hydroxide, or sulphide. It is the gradual destruction of materials (usually metals) by chemical and/or electrochemical reaction with their environment.

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Similar questions

Q. Metals rust when they come in contact with oxygen of the air that forms oxides and thereby destroys the metal. Which metal forms an oxide with oxygen, that protects it from further rusting:

Q. In the process of rusting, the metal iron (Fe) reacts with which substances present in the atmosphere? [2 MARKS]

The metal Iron (Fe) when exposed to moist atmosphere forms hydrated Iron oxide as per the following reaction. This process is known as rusting which does not take place in the absence of ‘Y’. Identify ‘Y’ in the reaction.
Fe+O₂+Y→Fe₂O₃.nH₂O

Statement 1: Rusting of Iron can be prevented by forming a layer of substance that is chemically inert to atmosphere.
Statement 2: The inert layer prevents the metal from interacting with the atmosphere.

Q. During corrosion, iron reacts with oxygen and moisture present in the atmosphere to form rust.

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