Solid State Tes...

Which of the following is not a crystalline solid? 

Which of the following is not related to amorphous solids?

The crystalline sodium has body centred cubic unit cell with edge length equal to $$0.424$$ nm at $$298$$ K. The density (in kg m$$^{-3}$$) of sodium metal at $$298$$ K is:

In a hexagonal close packed (hcp) structure of spheres, the fraction of the volume occupied by the spheres is A. In a cubic close packed structure, the fraction is B. The relation between A and B is:

How many kinds of space lattices are possible in a crystal?

Which one of the following is correct?

Which has a minimum percent volume occupied by the spheres?

Which of the following does not represent a type of crystal system?

An element (atomic mass $$=100$$ amu) having a bcc structure has a unit cell edge equal to $$400$$ pm. The density (in g cm$$^{-3}$$) of the element is:

Body diagonal of a cube is $$866$$ pm. Its edge length would be: