Solid State Tes...

The number of tetrahedral and octahedral voids in the hexagonal primitive unit cell is?

A solid contains $${ A }^{ n+ }$$ and $${ B }^{ m- }$$ ions. The structure of solid is FCC for $${ B }^{ m- }$$ ions and $${ A }^{ n+ }$$ ions are present in one-fourth of tetrahedral voids as well as in one fourth of octahedral voids. What is the simplest formula of solid?

Which one of the following schemes of ordering close-packed sheets of equal-sized spheres do not generate close-packed lattice?

The empty space left between the spheres in closed packed structure is called voids. The decreasing order of the size of voids is

The correct order of matching of the following compounds is:

In a crystal $$AB$$, which of the following crystal systems will have parameters, $$a\neq b\neq c$$ and $$\alpha = \beta = \gamma = 90^{\circ}$$?

The number of Bravais lattices in a cubic crystal is

The packing efficiency of the two dimensional square unit cell shown below is (all the circles are of the same radius).

Which is the most unstable Bravais Lattice?

The decreasing order of the size of the void is