Question

The quality of cotton is evaluated in terms of
(a)Length of fiber.
(b)Count
(c)Weight
(d)Tensile strength

Answer 1

Hint: Cotton is the most common plant fiber which is typically spun into fine yarn for further use for mechanical knitting or weaving into fabric or cloth. The high-quality cotton is that bearing all the good properties which make it a very high-quality fabric.

Complete answer:
The quality of cotton is evaluated in terms of length of the fiber, count, weight, and tensile strength.
Cotton is grown throughout the world. After harvesting raw cotton is ginned and prepared for yarn spinning. High-quality cotton can produce high-quality yarn, fabric, and therefore high-quality cloths. High-quality cotton also means the absence of certain harmful substances.

Additional Information: The presence of several physical properties is essential for being high-quality cotton, some of which are measurable, whereas others are not. These properties are:
-The length of fiber: The longer the fiber, the easier it is to process, and the better the product’s quality. Therefore, the long thread of cotton has a higher value in textile processing and is used for high-quality yarn or cloth.
-Count or fineness: The fineness of fibers or yarns is usually expressed as their linear density, with the units of tex, dtex, or the metric count.
-Tensile strength: The strength of fiber or yarn is commonly referred to as the force applied to break or rupture the fiber or yarn. The unit of tensile strength is grams-force (gf), kilograms-force (kgf), newtons (N), centinewtons (c N), or millinewtons (mN). Tenacity is commonly referred to as the ability of cotton fiber to the resistance of break or rupture per unit of fineness of fiber or yarn.

So, all the given options are correct.

Note: -Yarn is selected for different textiles based on the characteristics of the yarn fibers, such as warmth (wool), lightweight (cotton or rayon), durability (nylon is added to sock yarn, for example), or softness (cashmere, alpaca).
-The average length of cotton fiber used for textiles ranges from 25 to 37 mm.
-The fineness of cotton fiber is usually in the range of 5000–7000 metric count, which is the finest of all the natural vegetable fibers.