Chemistry of Textile Chemicals and Auxiliaries paper (WPE 203) from BUTEX affiliated colleges' 2024 Level-2 Term-I finals. Questions cover water hardness with zeolite softening, surfactant classification and CMC, optical brighteners, defoamers, and enzymatic desizing.
Level-2 Term-I, Final Exám-2024
Subject: Chemistry of Textile Chemicals and Auxiliaries (Code: WPE 203)
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 water hardness. Mention the methods of expressing hardness of water.
(b) Discuss the problems associated with hard water. How can these problems be solved?
(c) Briefly describe the Zeolite process for water softening with required sketch.
[3+4+5 = 12]
2. (a) Compare between soap and detergent.
(b) Explain the mechanism of detergent.
(c) Point out the advantages and disadvantages of non-ionic detergent.