हिंदी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Which of the following statement is not true about amorphous solids?

Advertisements
Advertisements

प्रश्न

Which of the following statement is not true about amorphous solids?

विकल्प

  • On heating they may become crystalline at certain temperature.

  • They may become crystalline on keeping for long time.

  • Amorphous solids can be moulded by heating.

  • They are anisotropic in nature.

MCQ
Advertisements

उत्तर

They are anisotropic in nature.

Explanation:

Amorphous solids are isotropic because they show thermal and optical properties, same in all directions.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 1: Solid States - Exercises [पृष्ठ २]

APPEARS IN

एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 12
अध्याय 1 Solid States
Exercises | Q I. 6. | पृष्ठ २

संबंधित प्रश्न

Why are solids rigid?


Why is glass considered a super cooled liquid?


Refractive index of a solid is observed to have the same value along all directions. Comment on the nature of this solid. Would it show cleavage property?


Define the term ‘amorphous’.


Write any two differences between amorphous solids and crystalline solids


Which among the following is not an example of amorphous solids?


Amorphous solids are also known as ____________.


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 not a crystalline solid?


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?


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.)


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×