Question

Assertion: Nylon wire is stronger than steel wire.
Reason: Nylon is a fiber while steel is an alloy.
A. Both assertion and reason are correct and reason is the correct explanation of assertion.
B. Both assertion and reason are correct, but reason is not the correct explanation of assertion.
C. Assertion is correct but reason is incorrect.
D. Both assertion and reason are incorrect.

Answer 1

Hint:To solve assertion reasons, type of problems always look at the assertion first, without looking at the reason, read the assertion, and think of its reason in your own mind. Then look at the reason. If you find that your reason matches with the reason in question, mark it A. if the reason is incorrect then option A and B will not be the answer. So, find the probability of the most suitable option.

Complete step-by-step answer:Let us look at only Assertion first. It states that Nylon wire is stronger than steel wire. Let us discuss it.
We know that nylon is a polyamide, and its monomers are adipic acid and hexamethylenediamine, which are held together by very strong amide linkages.
We should remember that an amide linkage is very rigid. The carbonyl oxygen and amide hydrogen carry a partial negative and partial positive charge, respectively, which allows each of them to form a hydrogen bond. And we know that in any substance if hydrogen bond is present, that substance is rigid and strong.
 This is the reason that the Nylon wire due to presence of strong amide linkage and hydrogen bond is much stronger than the steel wire, which lacks both of them.
Till now, we have understood that the assertion is completely correct and we have discussed the reason for the same.
Now, let us look at the reason, it states that Nylon is a fiber while steel is an alloy.
The given statement of reason is correct because we know that steel is an alloy of iron and carbon and that nylon is a fiber.
But this reason does not match with the actual and accurate reason that we discussed.
Thus, we infer that though both the assertion and reason are correct, the reason is not the correct explanation of assertion.

Hence, the correct option is B.

Note: Nylon wire is so strong, that it is used in the manufacturing of fishnet. It has found its applications in various other processes. Such as, it is used in the manufacturing of parachutes, track pants. Because of its resistance to heat and cold, it is also used to make ropes, such as the ones used in boats.