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

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

Advertisements
Advertisements

प्रश्न

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

पर्याय

  • 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
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 1: Solid States - Exercises [पृष्ठ २]

APPEARS IN

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

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?


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?


Most crystals show good cleavage because their atoms, ions or molecules are ____________.


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?


Amorphous solids are ______.


Which of the following is true about the value of refractive index of quartz glass?


Under which situations can an amorphous substance change to crystalline form?


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×