Question

As per the theory of dyeing, arrange the various stages of dyeing in the correct sequence: A. Adsorption B. Migration C. Substantive Attachment D. Diffusion

• A. A, D, B, C
• B. B, A, D, C
• C. A, B, D, C
• D. C, A, B, D

Hint:

Remember that in dyeing processes, adsorption comes first, followed by migration, diffusion, and finally substantive attachment.

Answer 1

The Correct Option is C

Step 1: Concept
The theory of dyeing involves several key steps that a dye molecule undergoes to attach itself permanently to a fiber. These steps include adsorption, migration, diffusion, and substantive attachment.

Step 2: Meaning
Adsorption: The initial step where dye molecules adhere to the surface of the fiber. Migration: Dye molecules move from the surface into the bulk of the fiber. Diffusion: The process by which dye molecules spread within the fiber matrix. Substantive Attachment: Permanent bonding of dye molecules to the fiber.

Step 3: Analysis
To correctly sequence these stages, we need to understand their order and interdependence: 1. Adsorption is the first step where dye molecules attach to the surface of the fiber. 2. Following adsorption, migration occurs as dye molecules move from the surface into the bulk of the fiber. 3. Once in the bulk, diffusion allows for further movement and spreading of dye within the fiber structure. 4. Finally, substantive attachment ensures that the dye is permanently bonded to the fiber. The sequence A, B, D, C aligns with this logical progression: Adsorption (A), Migration (B), Diffusion (D), Substantive Attachment (C).

Step 4: Conclusion
Based on the theory of dyeing and the described stages, the correct sequence is A, B, D, C. Final Answer: (C)