Textile Coloration-I exam (WPE 301) from BUTEX affiliated colleges' 2024 Level-3 Term-I finals. Questions address dyeing theory, direct, vat, basic, and reactive dye application on cotton, thickener selection, and printing cost calculation problems.
Level-3 Term-I, Final Exám-2024
Subject: Textile Coloration-I (Code: WPE 301)
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 chromophore and auxochrome with example.
(b) Explain theory of dyeing.
(c) Write the name of auxiliaries and their function used in dyeing.
[3+4+5=12]
2. (a) Why direct dyes are substantive? Explain.
(b) Discuss on the features of direct dyes.
(c) Briefly describe the process and recipe of cotton fabric dyeing with direct dyes.
[4+4+4=12]