Question

Match List - I with List - II.

List - I	List - II
A. Fabric	I. Dope dyeing
B. Fibre	II. Stock dyeing
C. Yarn	III. Package dyeing
D. Spinning Solution	IV. Winch dyeing

Choose the correct answer from the options given below :

• A. \( \text{A-III, B-IV, C-II, D-I} \)
• B. \( \text{A-III, B-II, C-I, D-IV} \)
• C. \( \text{A-IV, B-II, C-III, D-I} \)
• D. \( \text{A-IV, B-III, C-II, D-I} \)

Hint:

Remember the hierarchy: Solution $\rightarrow$ Fibre $\rightarrow$ Yarn $\rightarrow$ Fabric. Dyeing earlier (Solution/Fibre) gives better fastness but allows less flexibility for late-stage color changes.

Answer 1

The Correct Option is C

Concept: Dyeing can occur at various stages of textile production. The choice of stage affects the cost, color fastness, and the ability of the manufacturer to respond to fashion trends.

Step 1: Match the material form to its respective dyeing method.

• Fabric: One of the most common methods for dyeing fabric in rope form is Winch dyeing. The fabric is circulated through the dye bath in a continuous loop.
• Fibre: Dyeing fibers before they are spun into yarn is called Stock dyeing. This allows for the blending of different colored fibers to create "heather" effects.
• Yarn: When yarn is dyed after being wound onto perforated tubes or springs, it is called Package dyeing. This allows the dye liquor to be pumped through the package.
• Spinning Solution: For synthetic fibers, adding color directly into the liquid polymer before it is extruded through the spinneret is called Dope dyeing (or solution dyeing).