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प्रश्न
What is the hybridisation of carbon atom in diamond and graphite?
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उत्तर
Hybridisation of carbon atom in diamond is sp3 and that in graphite is sp2.
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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 are solids rigid?
Why do solids have a definite volume?
Classify the following as amorphous or crystalline solids:
Polyurethane, naphthalene, benzoic acid, teflon, potassium nitrate, cellophane, polyvinyl chloride, fibre glass, copper.
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’.
‘Stability of a crystal is reflected in the magnitude of its melting points.’ Comment. Collect melting points of solid water, ethyl alcohol, diethyl ether and methane from a data book. What can you say about the intermolecular forces between these molecules?
Write any two differences between amorphous solids and crystalline solids
Which among the following is not an example of amorphous solids?
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.
Most crystals show good cleavage because their atoms, ions or molecules are ____________.
“Crystalline solids are anisotropic in nature″. What is the meaning of anisotropic in the given statement?
A crystalline solid ____________.
Which of the following statements about amorphous solids is incorrect?
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 ______.
Which one of the following is non-crystalline or amorphous?
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 ______.
