Question

(a) Both A and R are true and R is correct explanation of the assertion.
(b) Both A and R are true but R is not the correct explanation of the assertion.
(c) A is true but R is false.
(d) A is false but R is true
Assertion : Corrosion of iron is known as rusting.
Reason : Corrosion of iron takes place in the presence of both air and moisture.

Answer 1

Answer:

(a) Both assertion and reason are true and reason is correct explanations of the assertion.

Answer 2

Answer:

The correct option is (b) Both A and R are true, but R is not the correct explanation of the assertion.

Explanation:

For assertion:

• Corrosion of metal is known as rusting.
• Rusting of iron is caused by the atmospheric moisture and air.
• When iron, Fe (iron), reacts with atmospheric oxygen (O2) and water (H2O), a brown flaky rust of ferric oxide [Fe(OH)3] is formed.

          4Fe + 3O2 + 6H2O → 4Fe(OH)3

For reason:

• Corrosion of iron takes place in the presence of both air and moisture.
• In air, O2 is present, which is responsible for rusting, and in the atmosphere, moisture (H2O) is present.

So, A and R are true, but R is not the explanation of A.

To learn more about the methods to prevent the rusting of iron,

https://brainly.in/question/6677077

To learn more about how corrosion is different from the rusting of metal,

https://brainly.in/question/10775828

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