Question map
Not attempted Correct Incorrect ★ Bookmarked
Loading…
Q46 (CDS-II/2010) Science & Technology › New Materials, Energy & Environment-linked Tech › Advanced materials and nanotech Answer Verified

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 ?

Result
Your answer: —  Â·  Correct: B
Explanation

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
How others answered
Each bar shows the % of students who chose that option. Green bar = correct answer, blue outline = your choice.
Community Performance
Out of everyone who attempted this question.
100%
got it right
✓ Thank you! We'll review this.

SIMILAR QUESTIONS

IAS · 2004 · Q56 Relevance score: 2.51

Consider the following statements: 1. Baking soda is used in fire extinguishers. 2. Quicklime is used in the manufacture of glass. 3. Gypsum is used in the manufacture of Plaster of Paris. Which of the statements given above is/are correct ?

CAPF · 2008 · Q113 Relevance score: 2.47

Consider the following statements : 1. Baking soda is used in fire extinguishers. 2. Quick lime is used in the manufacture of glass. Which of the statements given above is/are correct ?

IAS · 2022 · Q56 Relevance score: 1.99

With reference to polyethylene terephthalate, the use of which is so widespread in our daily lives, consider the following statements : 1. Its fibres can be blended with wool and cotton fibres to reinforce their properties. 2. Containers made of it can be used to store any alcoholic beverage. 3. Bottles made of it can be recycled into other products. 4. Articles made of it can be easily disposed of by incineration without causing greenhouse gas emissions. Which of the statements given above are correct ?

IAS · 2023 · Q16 Relevance score: 1.50

Consider the following statements : 1. Some mushrooms have medicinal properties. 2. Some mushrooms have psychoactive properties. 3. Some mushrooms have insecticidal properties. 4. Some mushrooms have bioluminescent properties. How many of the above statements are correct?

NDA-I · 2011 · Q39 Relevance score: 1.36

Which of the statements about glass are correct ? 1. Glass is a super-cooled liquid having infinite viscosity 2. Violet coloured glass is obtained by adding Mn02 3. Glass is a man made silicate 4. Glass is a crystalline substance Select the correct answer using the code given below :