Question 85: Properties of Matter

Question

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A : Steel is used in the construction of buildings and bridges.
Reason R : Steel is more elastic and its elastic limit is high.
In the light of above statements, choose the most appropriate answer from the options given below

Accepted Answer

Assertion A
states that steel is used in the construction of buildings and bridges, which is true. Steel is a widely used material for construction due to its high strength, durability, and resistance to corrosion.
Reason R
states that steel is more elastic and has a higher elastic limit compared to other common construction materials like concrete, and this is why it is preferred in construction. This statement is also true. Steel's high elasticity and high elastic limit make it an ideal material for use in construction as it can withstand greater stress before it becomes permanently deformed.
Therefore, both
Assertion A
and
Reason R
are true statements. However, to determine the most appropriate answer, we need to see if
Reason R
explains
Assertion A
.
Reason R
does indeed explain why steel is used in the construction of buildings and bridges. Its high elasticity and high elastic limit allow it to withstand greater stress than other common construction materials before becoming permanently deformed, making it a preferred material for construction.
So, the correct answer is
Both A and R are correct, and R is the correct explanation of A
.

Answer

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

Answer

A is correct but R is not correct

Answer

Both A and R are correct but R is NOT the correct explanation of A

Answer

A is not correct but R is correct

Properties of Matter

Choose the correct answer: