Advertisements
Advertisements
प्रश्न
Amorphous solid can also be called:
(i) pseudo solids
(ii) true solids
(iii) supercooled liquids
(iv) supercooled solids
Advertisements
उत्तर
(i) pseudo solids
(iii) supercooled liquids
Explanation:
The structure of amorphous solids is similar to that of the liquids. They have a tendency to flow like liquids, though very slowly. Therefore, sometimes they are called pseudo solids or supercooled liquids.
APPEARS IN
संबंधित प्रश्न
The relation a ≠ b ≠ c and α ≠ β ≠ γ represents which crystal system?
(A) Orthorhombic
(B) Tetragonal
(C) Triclinic
(D) Monoclinic
What is the hybridisation of carbon atom in diamond and graphite?
Why are solids rigid?
Define the term ‘amorphous’.
What makes a glass different from a solid such as quartz? Under what conditions could quartz be converted into glass?
Assertion: Stability of a crystal is reflected in the magnitude of its melting.
Reason: The stability of a crystal depends upon the strength of the interparticle attractive force.
Which of the following is an amorphous solid?
Which of the following statement is not true about amorphous solids?
The sharp melting point of crystalline solids is due to ______.
Why some glass objects from ancient civilisations are found to become milky in appearance?
Which of the following amorphous solid is used as photovoltaic material for conversion of sunlight into electricity?
Which one of the following is non-crystalline or amorphous?
Which of the following is true about the value of refractive index of quartz glass?
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.
Under which situations can an amorphous substance change to crystalline form?
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.
An ionic solid AB2 isomorphous to the rutile structure (a tetragonal system with the effective number of formula units = 2) has edge lengths of the unit cell of 4Å, 4Å and 7Å. The density of the substance is ______ mg/cc. (if its formula weight is 80. The NA = 6 × 1023 and express your answer in mg/cc using four significant digits.)
