Assertion (A) : Steel is an alloy of iron with a metal.
Reason (R) : Same steels contain carbon as a constituent

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(A) is true and (R) is false

(A) is false and (R) is true

Both (A) and (R) are correct. (R) does not explain (A)

Both (A) and (R) are correct. (R) explains properly (A)

answer is B.

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Detailed Solution

Steel is an iron alloy that normally contains a small amount of carbon to increase its strength and resistance to fracture in comparison to other kinds of iron. There could be or be added a lot of different components. Typically, 11% more chromium is required for corrosion- and oxidation-resistant stainless steels.

Steel is an iron and carbon alloy with a maximum carbon concentration of 2%. (A material with a higher carbon content is defined as cast iron.)

Hence, the correct option is ( B)

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