Natural Textile Fibres paper (YE 101) from the 2021 Level-1 Term-I finals at BUTEX affiliated colleges. Includes crystalline and amorphous regions, cotton botanical structure with bonding, jute as the golden fibre with six defects, and silk degumming and weighting.
Level-1 Term-I, Final Exám-2021
Subject: Natural Textile Fibres (Code: YE 101)
Time: 3.0 Hrs. Full Marks: 72
(Use separate answer script for Part: A and Part: B)
(All parts of a question must be answered consecutively)
Part: A
(Answer any three questions)
1. (a) Define: (i) Crystalline region (ii) Amorphous region.
(b) “All fibers are not Textile Fiber” explain the statement.
(c) Describe the saw ginning process with sketch.
[3+3+6=12]
2. (a) Write the Botanical names of cotton fiber. Which variation is available in Bangladesh?
(b) Explain the chemical structure of cotton along with the possible types of bonding within the polymer.