Dyeing And Bleaching Paper 2 WASSCE (SC), 2018

Question 2

         
  1. Define resist.
    (b)        List any three tie-dye methods.
    (c)        Highlight any five steps to achieve resist in tie -dye. 

 


Observation

Most candidates attempted the question and the overall performance was excellent. Although, a few of this class of candidates were able to define resist and list tie-dye methods but failed to orderly highlight the steps to achieving resist in tie-dye This made them to loose some marks. They were expected to respond to the question thus:  
(a)              Definition of  resist
It is a method/technique of forming/creating patterns/designs to prevent the absorption/penetration of dyes by tying, stitching, waxing or starching some areas/portions of a fabric before dyeing.

(b)  (i)        Tie-dye methods:
Marbling/Squeezing/Crumpling; Folding; Stitching/Sewing; Pleating; Knotting/Tied cycles; Clamping; Splashing; Spraying; Twisting/Spiral; Clump tying; Bunching; Concentric squares; Concentric circles; Bolting/Sandwiching/
Criss – crossing.
                  
       (ii)       Steps to achieve resist in tie-dye:
-           Get all materials/tools ready such as fabric, dyes, chemicals, tying materials (e.g. strings, raffia, twine), bowls,  etc.
-           Plan the design on the fabric and resist some areas by any suitable tying technique/method.
-           Prepare the dye bath by the mixture of dyes, caustic soda and hydrosulphite.
-           Dip the tied fabric in the dye solution and leave to absorb dye properly.
-           Remove the fabric from the dye solution and spread to oxidize.
-           Loose the tied areas and rinse fabric to remove excess dye .
-           Starch the fabric.
-           Dry the fabric.
-           Iron the fabric to achieve a lustrous effect.
-           Package the fabric.