Asbestos and Fiber glass are examples of :

Question

Accepted Answer

The correct option is 2:
The correct answer is **Mineral fiber**. In the comprehensive classification of textile fibers, the first and most fundamental distinction is made between Natural fibers and Man-made (or Manufactured) fibers. Natural fibers, in turn, are sub-classified according to their source of origin into three main groups: Vegetable (derived from cellulose, such as cotton), Animal (derived from protein, such as wool and silk), and **Mineral**. **Asbestos** is a clear and classic example of a naturally occurring mineral fiber; it is a silicate material mined directly from rock formations. **Fiberglass**, on the other hand, is a man-made fiber, but it is manufactured from glass, which is composed of mineral-based silica. Due to their entirely inorganic, rock- or earth-derived composition, both Asbestos and Fiberglass are placed into the specific, shared category of **Mineral fibers**. This classification highlights their chemical source—inorganic mineral compounds—which distinguishes them from organic (carbon-based) plant and animal fibers.

The incorrect option is 1:
**Blended fiber** is an incorrect classification for these materials. A blended fiber refers to a textile material made by combining or mixing two or more *different* types of fibers (e.g., cotton and polyester) before they are spun into yarn or woven into fabric. The purpose of blending is typically to achieve a combination of desirable characteristics from the individual components, such as warmth and wrinkle resistance. Both Asbestos and Fiberglass, however, are single-composition materials; an item made of Asbestos or Fiberglass is constructed from only that one fiber. They are distinct fiber types, not a mixture of two or more different fibers, and therefore cannot be classified as a blend.

The incorrect option is 3:
**Regenerated fiber** is an inaccurate term for both Asbestos and Fiberglass because of its specific chemical definition. Regenerated fibers are a category of man-made fibers produced by chemically dissolving and then reforming a *naturally occurring polymer*, most commonly cellulose (from wood pulp or cotton linters) or sometimes protein. The most common examples are Viscose Rayon and Lyocell. Asbestos and Fiberglass, being inorganic compounds derived from minerals and glass, do not involve the chemical regeneration of an organic polymer. Thus, this category is reserved exclusively for modified organic materials, which is not the case here.

The incorrect option is 4:
**Artificial fiber** is often used as a general, older synonym for 'man-made fiber' or 'manufactured fiber.' The critical flaw in this option is that **Asbestos** is a **natural fiber**, as it is found in the earth and is mined, not artificially created by people. Since the question asks for a category that correctly applies to *both* Asbestos (natural) and Fiberglass (manufactured), a term that implies human creation for both is incorrect. The most precise and universally correct categorization must be based on their shared, common source material, which is mineral.