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Crystalline and Amorphous Solid

Amorphous sol...

Question

Amorphous solids can also be called ..............

(a) Pseudo solids (b) true solids

(c) super cooled liquids (d) super cooled solids

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Solution

Answers: (a), and (c)

Amorphous solid has short range order which has a tendency to flow very slowly. Hence, it is also known as pseudo solids or super cooled liquids. Glass panes fixed to windows or doors of old buildings are invariably observed to be thicker at the bottom than at the top.these are examples of amorphous solids.

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Similar questions

Which of the following solids are also called as super cooled liquids?

Q. Assertion :Initially the term pseudo solid was given for solids, which were easily distorted by bending and compression forces. They even tend to flow slowly under its own mass and lose shape. Reason: These characteristics are shown by pseudo solids as in pitch, glass and thus, the name pseudo solid was replaced by super cooled liquids.

Which of the following features are not shown by quartz glass ?

(a) This is a crystalline solid

(b) Refractive index is same in all the directions

(c) This has definite heat of fusion

(d) This is also called super cooled liquid

Q. Assertion :Third law of thermodynamics is confined to pure crystalline solids. Reason: Theoretical arguments and practical evidence have shown that entropy of solutions and super cooled liquids is not zero at 0 K.

Q. Give the reasons for following.
Glasses are called super cooled liquids.

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