Wet Processing-I exam (WPE 205) from BUTEX affiliated colleges' 2024 Level-2 Term-I finals. Includes pretreatment flow charts, hard water reactions, gas singeing machines, peroxide bleaching with pH effects, silk degumming, and dyestuff classification.
Level-2 Term-I, Final Exám-2024
Subject: Wet Processing-I (Code: WPE 205)
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) Write down the flow process of pretreatment of wet processing with short description.
(b) Discuss about the problems caused by hard water in textile industry with necessary reaction.
[6+6 = 12]
2. (a) Why singeing is necessary? Describe gas singeing machine.
(b) Define: (i) Leveling agent (ii) Sequestering agent (iii) Surfactants (iv) Souring.
(c) State the ideal quality of water for textile wet processing.
[5+4+3 = 12]
3. (a) Write down the mechanism of hydrogen peroxide bleaching.