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1.
For a crystal, the angle of diffraction 
is 
and the second order line has a d value of 
The wavelength 
of X-rays used for Bragg's diffraction is
is and the second order line has a d value of The wavelength of X-rays used for Bragg's diffraction is
2.
Which element is used for making a transistor?
3.
crystallises in the same type of lattice as dose 
Given that 
and 
Calculate the ratio of the side of the unit cell for to that of
crystallises in the same type of lattice as dose Given that and Calculate the ratio of the side of the unit cell for to that of
4.
8 : 8 co-ordination of 
is found to change into 6 : 6 co-ordination on :
is found to change into 6 : 6 co-ordination on :
5.
The unit cell with the structure below refers to......crystal system.
6.
crystallises in a body centred cubic lattice. The unit cell length is 436.6 pm. Given that the atomic mass of 
and that of 
amu and Avogadro number being 
the density of is :
crystallises in a body centred cubic lattice. The unit cell length is 436.6 pm. Given that the atomic mass of and that of amu and Avogadro number being the density of is :
7.
Molecular crystals exist in :
8.
The pure crystalline substance on being heated gradually first forms a turbid liquid at constant temperature and still at higher temperature turbidity completely disappears. The behavior is a characteristic of substance forming :
9.
The structure of crystal is :
crystal is :
10.
An alloy of copper, silver and gold is found to have copper constituting the 
lattice. If silver atoms occupy the edge centres and gold is present at body centre, the alloy has a formula
lattice. If silver atoms occupy the edge centres and gold is present at body centre, the alloy has a formula