Question

Actinic degradation refers to the weakening of fibres due to exposure to :
• [A.] Sunlight
• [B.] Acids
• [C.] Mildew
• [D.] Alkali
• [E.] Carpet beetle Choose the correct answer from the options given below :

• A. A Only
• B. C and E Only
• C. B and D Only
• D. A, B and D Only

Hint:

The word "Actinic" comes from the Greek 'aktis' (ray). Think of Sun Rays! It is the primary reason why curtains and outdoor furniture fade and become brittle over time.

Answer 1

The Correct Option is A

Concept: Textile degradation describes the loss of strength and integrity in fibers. "Actinic" refers specifically to photochemical effects caused by radiation.

Step 1: Identifying degradation agents:
• Sunlight (A): Actinic degradation occurs when ultraviolet (UV) rays from sunlight trigger a chemical reaction that breaks the molecular bonds (polymers) of the fiber.
• Acids/Alkali (B & D): These agents cause chemical degradation, not actinic.
• Mildew/Carpet Beetles (C & E): These represent biological or microbiological degradation.

Step 2: Conclusion: Since "actinic" strictly refers to light-induced damage, only "Sunlight" (A) is the correct agent. This makes option (1) correct.