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Which of the following is used in the manufacture of building materials?
  • a)
    Urea-formaldehyde resin
  • b)
    Kevlar
  • c)
    Glyptal
  • d)
    Bakelite
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Which of the following is used in the manufacture of building material...
Glyptal is a copolymer of ethylene glycol and phthalic acid. It is an important component in the manufacturing of paints, lacquers and building materials.
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Community Answer
Which of the following is used in the manufacture of building material...
Building Materials Manufacturing
Building materials are essential components used in the construction industry to create structures like buildings, bridges, and roads. Several materials are utilized in the manufacturing process, with glyptal being one of them.

Glyptal
Glyptal is a type of synthetic resin that is commonly used in the production of building materials. This resin is derived from glycerol and phthalic anhydride, resulting in a durable and heat-resistant material. Glyptal is known for its adhesive properties, making it ideal for bonding various components together in the manufacturing of building materials.

Applications in Building Materials
Glyptal is utilized in various building materials, including paints, coatings, adhesives, and sealants. In the construction industry, glyptal-based products are used to enhance the durability and performance of structures. These materials help protect surfaces from corrosion, moisture, and other environmental factors, extending the lifespan of buildings and infrastructure.

Advantages of Glyptal
- Durable and heat-resistant
- Excellent adhesive properties
- Provides protection against corrosion and moisture
- Enhances the longevity of structures
In conclusion, glyptal is a crucial component in the manufacturing of building materials due to its adhesive properties and durability. Its versatile applications make it an essential material in the construction industry, contributing to the strength and longevity of various structures.
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Read the following text and answer the following questions on the basis of the same:Negative Refractive Index: One of the most fundamental phenomena in optics is refraction. When a beam of light crosses the interface between two different materials, its path is altered depending on the difference in the refractive indices of the materials. The greater the difference, the greater the refraction of the beam. For all known naturally occurring materials the refractive index assumes only positive values. But does this have to be the case?In 1967, Soviet physicist Victor Veselago hypothesized that a material with a negative refractive index could exist without violating any of the laws of physics.Veselago predicted that this remarkable material would exhibit a wide variety of new optical phenomena. However, until recently no one had found such a material and Veselago’s ideas had remained untested. Recently, meta-material samples are being tested for negative refractive index. But the experiments show significant losses and this could be an intrinsic property of negativeindex materials.Snell’s law is satisfied for the materials having a negative refractive index, but the direction of the refracted light ray is ‘mirror-imaged’ about the normal to the surface.There will be an interesting difference in image formation if a vessel is filled with “negative water” having refractive index – 1.33 instead of regular water having refractive index 1.33.Say, there is a fish in a vessel filled with negative water. The position of the fish is such that the observer cannot see it due to normal refraction since the refracted ray does not reach to his eye.But due to negative refraction, he will be able to see it since the refracted ray now reaches his eye.Q. When the angle of incidence will be equal to angle of refraction for material having negative refraction index?

Read the following text and answer the following questions on the basis of the same:Negative Refractive Index: One of the most fundamental phenomena in optics is refraction. When a beam of light crosses the interface between two different materials, its path is altered depending on the difference in the refractive indices of the materials. The greater the difference, the greater the refraction of the beam. For all known naturally occurring materials the refractive index assumes only positive values. But does this have to be the case?In 1967, Soviet physicist Victor Veselago hypothesized that a material with a negative refractive index could exist without violating any of the laws of physics.Veselago predicted that this remarkable material would exhibit a wide variety of new optical phenomena. However, until recently no one had found such a material and Veselago’s ideas had remained untested. Recently, meta-material samples are being tested for negative refractive index. But the experiments show significant losses and this could be an intrinsic property of negativeindex materials.Snell’s law is satisfied for the materials having a negative refractive index, but the direction of the refracted light ray is ‘mirror-imaged’ about the normal to the surface.There will be an interesting difference in image formation if a vessel is filled with “negative water” having refractive index – 1.33 instead of regular water having refractive index 1.33.Say, there is a fish in a vessel filled with negative water. The position of the fish is such that the observer cannot see it due to normal refraction since the refracted ray does not reach to his eye.But due to negative refraction, he will be able to see it since the refracted ray now reaches his eye.Q. Which of the following is the intrinsic property of negative-index materials?

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Which of the following is used in the manufacture of building materials?a)Urea-formaldehyde resinb)Kevlarc)Glyptald)BakeliteCorrect answer is option 'C'. Can you explain this answer?
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