Consider the following statements about the properties and uses of Glass wool 1. Glass wool has tensile strength greater than wool . 2. Glass wool is fire proof 3. Glass wool has high electrical conductivity and absorbs moisture . 4.Glass wool is used to prepare fibre Which of the statements given, above are correct ?

Glass wool, also known as fiberglass, is an inorganic material produced by spinning molten glass into fine fibers [t3, t4]. Statement 1 is correct as glass fibers possess significantly higher tensile strength compared to natural wool fibers [t5]. Statement 2 is correct because glass wool is non-combustible and fire-resistant, complying with safety standards like BS 476 [t3, t5]. Statement 3 is incorrect; glass is a well-known electrical insulator with high resistivity (10^12 to 10^17 Ω m), not a conductor [c3]. While it can trap moisture in its air pockets, it is often treated to be water-repellent or used with moisture-proof veneers [t2, t4]. Statement 4 is correct as glass wool is fundamentally composed of glass fibers and is used to manufacture various fiber-based products like mats and reinforced plastics [t1, t4].

Sources

1. [1] https://en.wikipedia.org/wiki/Glass_wool
2. [2] Science , class X (NCERT 2025 ed.) > Chapter 11: Electricity > Activity 11.3 > p. 179