CTCA (AC) 2024
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.
CTCA (T&N) 2024
Chemistry of Textile Chemicals & Auxiliaries paper (WPE 203) from BUTEX affiliated colleges' 2024 Level-2 Term-I finals. Questions include hard water consequences, ion-exchange softening, OBA mechanisms, colloids, desizing enzymes, and defoamer classification.
CTCA (DU) 2018
Textile Chemistry and Coloration-I (TE-2105) question paper, University of Dhaka, 2018. Candidates work through water hardness, jigger dyeing, detergency mechanisms, enzymatic desizing, mercerization, and scouring of grey cotton fabric.