Question

Process of Viscose Rayon filament production involves ...........
A. Ripening
B. Ageing
C. Shredding
D. Xanthating

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

Hint:

Always memorize the rayon sequence: Shredding → Ageing → Xanthating → Ripening. This is frequently asked in textile exams.

Answer 1

The Correct Option is B

Step 1: Understanding viscose rayon.
Viscose rayon is a regenerated cellulose fibre, produced by chemically treating wood pulp or cotton linters.
The process involves several sequential chemical operations to convert cellulose into viscose solution and then into fibres.
Step 2: Stages of the process.
- Shredding: Cellulose pulp sheets are shredded into small pieces to increase surface area.
- Ageing: The shredded pulp is exposed to oxygen to reduce molecular weight for easier processing.
- Xanthating: Cellulose reacts with carbon disulphide to form cellulose xanthate.
- Ripening: The viscose solution is allowed to ripen to achieve proper viscosity for spinning.
Step 3: Correct sequence.
Thus, the correct order is: Shredding → Ageing → Xanthating → Ripening.
Step 4: Conclusion.
Therefore, the correct option is (2) C, B, D, A.