|
How many atoms per unit cell (Z) are present in bcc unit cell?
|
|
0
|
3644
|
September 20, 2016
|
|
Name the parameters that characterise a unit cell
|
|
0
|
2966
|
September 20, 2016
|
|
Give significance of a ‘lattice point’
|
|
0
|
1456
|
September 20, 2016
|
|
Stability of a crystal is reflected in the magnitude of its melting point
|
|
1
|
4474
|
September 20, 2016
|
|
Explain the basis
|
|
1
|
1668
|
September 20, 2016
|
|
Classify the following solids in different categories based on the nature
|
|
1
|
1991
|
September 20, 2016
|
|
Metallic solids are conductors of heat and electricity. Why?
|
|
0
|
1387
|
September 20, 2016
|
|
Inspite of long range order in the arrangement of particles, why are the crystals usually not perfect?
|
|
0
|
2831
|
September 20, 2016
|
|
Glass panes fixed to windows or doors of old buildings are found to become thicker at the bottom because the glass flows down very slowly and makes the bottom portion thicker
|
|
0
|
1079
|
September 20, 2016
|
|
Why glass panes fixed to windows or doors of old buildings are found to be thicker at the bottom?
|
|
0
|
4458
|
September 20, 2016
|
|
H Refractive index of a solid is observed to have the same value along all directions
|
|
1
|
808
|
September 20, 2016
|
|
Classify the following as amorphous or crystalline solids
|
|
1
|
6867
|
September 20, 2016
|
|
Why are solids incompressible?
|
|
0
|
2016
|
September 20, 2016
|
|
Solid A is a very hard, electrical insulator in solid as well as in molten state and melts at extremely high temperature. What type of solid is it?
|
|
0
|
1092
|
September 20, 2016
|
|
What types of solids are electric conductors, malleable and ductile?
|
|
0
|
769
|
September 20, 2016
|
|
Ionic solids conduct electricity in molten state but not in solid state. Explain
|
|
0
|
1020
|
September 20, 2016
|
|
Which type of intermolecular force is present in ice?
|
|
0
|
1336
|
September 20, 2016
|
|
Why is glass considered a supercooled liquid?
|
|
0
|
1084
|
September 20, 2016
|
|
Under which situation can an amorphous substance change to crystalline form?
|
|
0
|
3828
|
September 20, 2016
|
|
Why are amorphous solids called pseudo solids or supercooled liquids?
|
|
0
|
4532
|
September 20, 2016
|
|
Which types of solids have sharp melting points?
|
|
0
|
685
|
September 20, 2016
|
|
Which types of solids have definite enthalpy of fusion?
|
|
0
|
1502
|
September 20, 2016
|
|
Why do solids have a definite volume?
|
|
0
|
982
|
September 20, 2016
|
|
Why are solids rigid?
|
|
0
|
832
|
September 20, 2016
|
|
Why are liquids and gases categorised as fluids?
|
|
0
|
1849
|
September 20, 2016
|