Tag: properties of solids
Questions Related to properties of solids
If we mix a pentavalent impurity in a crystal lattice of germanium, what type of semiconductor formation will occur?
Select the correct statement.
A semiconductor of Ge can be made p-type by adding which impurity?
Assertion (A): Group-$13$ doped crystals of silicon are called a p-type semiconductors.
Reason (R): Holes (positive in charge) appear to be responsible for the semiconducting properties.
Which of the following statement is correct?
Assertion: Group-$15$ doped crystals of silicon are called an n-type semiconductor.
Reason: Neutrons are responsible for the semiconducting properties.
The density for simple cubic lattice is :
[where A is atomic weight, N is the Avogadro number and a is lattice parameter]
Statement: The melting point of ice changes markedly with pressure.
State whether the given statement is true or false.
Glass is an example of _____ solids.
Statement: In an insulator, the band gap is small.
State whether the given statement is true or false.