Question

The glass fiber is \(\underline{\hspace{2cm}}\) fiber.

• A. Protein
• B. Inorganic
• C. Cellulosic
• D. Elastomeric

Hint:

Fiber Classification by Origin: - Organic (Carbon-based): - Natural: Cotton (cellulose), Wool (protein). - Synthetic: Polyester, Nylon. - Inorganic (Mineral-based): - Glass, Carbon, Asbestos, Ceramic fibers.

Answer 1

The Correct Option is B

Step 1: Understand the chemical composition of glass fiber. Glass fiber is made primarily from silica (silicon dioxide, SiO\(_2\)), which is the main component of sand, along with other metal oxides. 
 

Step 2: Classify the fiber based on its chemistry. 
- Organic fibers are based on carbon chemistry. This includes natural fibers (cellulosic like cotton, protein like wool) and synthetic polymers (polyester, nylon, acrylic). 
- Inorganic fibers are not based on carbon. They are derived from minerals or geological sources. Glass (silica-based), carbon fiber (pure carbon), and asbestos (silicate minerals) are examples.

Step 3: Evaluate the options. 
- (A) Protein fibers (e.g., wool, silk) are organic. 
- (B) Inorganic fibers are derived from non-living, mineral sources. Glass fits this description perfectly. 
- (C) Cellulosic fibers (e.g., cotton, rayon) are organic. 
- (D) Elastomeric fibers (e.g., spandex) are organic polymers. 

Conclusion: Glass fiber is an inorganic fiber.