Asbestos and fibreglass are examples of :

Question

Accepted Answer

Asbestos and fibreglass are examples of mineral fibres. Here's a detailed explanation supporting why Option 4 is the correct answer:

1. **Explanation for Option 4 (Mineral Fibre):**
   - Mineral fibres are fibres that are derived from minerals. They are naturally occurring or manufactured from mineral sources. Asbestos is a naturally occurring mineral fibre that has been used for its heat resistance and insulating properties. Similarly, fibreglass is a manufactured fibre made from fine fibres of glass, which is a mineral. Both asbestos and fibreglass are known for their durability, resistance to heat, and insulating properties, which are characteristic features of mineral fibres.

2. **Explanation for why other options are incorrect:**

- **Option 1 (Blended Fibre):**
     - Blended fibres are made by combining two or more different types of fibres to create a new fibre with combined properties. Asbestos and fibreglass are not blended fibres; they are not created by blending different fibres but are instead derived from mineral sources.

- **Option 2 (Artificial Fibre):**
     - Artificial fibres, also known as synthetic fibres, are man-made fibres produced from chemical substances. Examples include nylon, polyester, and acrylic. Asbestos is a naturally occurring mineral, and fibreglass is made from glass, which is not a synthetic chemical substance, thus they do not fall under artificial fibres.

- **Option 3 (Regenerated Fibre):**
     - Regenerated fibres are made from natural raw materials that are chemically processed to form fibres. Examples include rayon and viscose, which are made from cellulose. Asbestos and fibreglass do not undergo such chemical processing from natural raw materials; they are directly derived from mineral sources.

In conclusion, asbestos and fibreglass are correctly classified as mineral fibres due to their origin and properties, which align with the characteristics of mineral fibres. This supports Option 4 as the correct answer.