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प्रश्न
Define the term 'amorphous'. Give a few examples of amorphous solids.
उत्तर १
Amorphous solids are the solids whose constituent particles are of irregular shapes and have short range order. These solids are isotropic in nature and melt over a range of temperature. Therefore, amorphous solids are sometimes called pseudo solids or super cooled liquids. They do not have definite heat of fusion. When cut with a sharp-edged tool, they cut into two pieces with irregular surfaces. Examples of amorphous solids include glass, rubber, and plastic.
उत्तर २
Amorphous solids are those substances, in which there is no regular arrangement of its constituent particles, (i.e., ions, atoms or molecules). The arrangement of the constituting particles has only short range order, i.e., a regular and periodically repeating pattern is observed over short distances only, e.g., glass, rubber and plastics.
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संबंधित प्रश्न
The relation a ≠ b ≠ c and α ≠ β ≠ γ represents which crystal system?
(A) Orthorhombic
(B) Tetragonal
(C) Triclinic
(D) Monoclinic
Why do solids have a definite volume?
What makes a glass different from a solid such as quartz? Under what conditions could quartz be converted into glass?
Why does sodium chloride on heating with sodium vapours acquire yellow colour?
Which among the following is not an example of amorphous solids?
Amorphous solids are also known as ____________.
Which of the following is not a crystalline solid?
Which of the following statements about amorphous solids is incorrect?
Which of the following is an amorphous solid?
Why some glass objects from ancient civilisations are found to become milky in appearance?
Which one of the following is non-crystalline or amorphous?
Amorphous solids are ______.
Amorphous solid can also be called:
(i) pseudo solids
(ii) true solids
(iii) supercooled liquids
(iv) supercooled solids
Which of the following features are not shown by quartz glass?
(i) This is a crystalline solid.
(ii) Refractive index is same in all the directions.
(iii) This has definite heat of fusion.
(iv) This is also called super cooled liquid.
The property of crystalline solid is not ______.
Assertion A: Sharp glass edge becomes smooth on heating it upto its melting point.
Reason R: The viscosity of glass decreases on melting.
Choose the most appropriate answer from the options given below.
