Question

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : Maintenance of fabrics made from high twist yarns is easier.
Reason (R) : Twisted yarns shed soil easily as less space between the fibres does not allow the soil to settle.

• 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.

Hint:

High-twist yarns create a compact, smooth fabric surface. This leaves fewer microscopic pockets for dirt to get trapped in, making the fabric highly stain-resistant and easy to wash.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Yarn twist refers to the spiral arrangement of fibers around the yarn axis, measured in twists per inch (TPI).
The level of twist significantly affects the physical properties of the yarn, including strength, diameter, smoothness, and soil resistance.

Step 2: Detailed Explanation:
Let us analyze the relationship between yarn twist and soil resistance:
- Reason (R): "Twisted yarns shed soil easily as less space between the fibres does not allow the soil to settle."
This is scientifically true.
Increasing the twist binds the individual fibers more tightly together, reducing the microscopic air spaces between them.
This results in a smooth, compact, and hard yarn surface that prevents dirt and soil particles from penetrating or becoming trapped within the yarn.
During laundering, soil is easily released from this smooth surface.
- Assertion (A): "Maintenance of fabrics made from high twist yarns is easier."
This is also true.
Because high-twist yarns resist soil penetration and shed dirt easily during washing, the resulting fabrics are easier to clean and maintain.
- Since the compact nature of highly twisted yarns directly explains why these fabrics shed soil easily and are simple to maintain, Reason (R) is the correct scientific explanation of Assertion (A).
Therefore, Option (A) is correct.

Step 3: Final Answer:
Both Assertion (A) and Reason (R) are true, and (R) is the correct explanation of (A).