GENERAL KNOWLEDGE

GK

GENERAL SCIENCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Cotton fibers are made of-
A
proteins
B
fats
C
starch
D
cellulose
Explanation: 

Detailed explanation-1: -Cotton fibers are the purest form of cellulose, nature’s most abundant polymer. Nearly 90% of the cotton fibers are cellulose. All plants consist of cellulose, but to varying extents.

Detailed explanation-2: -After scouring and bleaching, cotton is 99% cellulose. Cellulose is a macromolecule –– a polymer made up of a long chain of glucose molecules linked by C-1 to C-4 oxygen bridges with elimination of water (glycoside bonds).

Detailed explanation-3: -Cellulose biophysical properties such as degree of crystallinity, fibril angle, and degree of polymerization affect the performance of the fiber. The mature cotton fiber contains >90% (w/w) crystalline cellulose, including its cellulosic secondary wall surrounded by a  200 nm cuticulated primary wall.

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