Question

Assertion (A) : Corrosion of iron is a serious problem. [ ] Reason (R) : Every year an enormous amount of money is spent to replace damaged iron.
a) Both A and R are true and R is the correct explanation of A

b) Both A and R are true and R is not the correct explanation of A

c) A is true but R is false

d) A is False but R is true​

Answer 1

Answer:

• In the given question, we have been provided with two different statements, an assertion, and a reason.
• The assertion says that corrosion of iron is a serious problem. This statement is certainly correct and we can observe this fact on a daily basis now.
• The reason for this statement says that every year an enormous amount of money is spent to replace damaged iron.
• This statement is also correct but it does not explain the assertion very well. Therefore, it will not be considered a correct explanation of assertion.
• Hence, option (B) is the correct answer where it says that both A and R are true but R is not the correct explanation of A.

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Answer 2

Answer:

Both A and R are true and R is the correct explanation of A

So, option a is the correct option.

Explanation:

When iron comes into contact with oxygen and water, it corrodes, resulting in the formation of iron oxide, known as rust.

Iron corrosion is a serious problem because it reduces the useful properties of the iron, loses its strength and eventually becomes unusable.

As a result, iron tones are damaged and wasted.

Huge sums are spent every year to replace damaged iron. Rusting of iron can be prevented by painting, oiling, greasing, electroplating, chrome anodizing or alloying.

Corrosion is a dangerous and very expensive problem. It can cause buildings and bridges to collapse, oil pipelines to rupture, chemical plants to leak, and bathrooms to flood. Corroded electrical contacts can cause fires and other problems, corroded medical implants can cause blood poisoning, and air pollution has caused corrosion damage to works of art around the world. Corrosion threatens the safe disposal of radioactive waste, which must be stored in containers for tens of thousands of years.

The most common types of corrosion result from electrochemical reactions. General corrosion occurs when most or all of the atoms on the same metal surface are damaging,oxidized the entire surface. Most metals oxidize easily: they tend to lose electrons to oxygen (and other substances) in air or water. When oxygen is reduced (gains electrons), it forms an oxide with the metal.

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