Questions in semiconductor

Select	Question
	P-type semiconductors are made by adding impurity element
	At room temperature, a P-type semiconductor has
	In intrinsic semiconductor at room temperature, number of electrons and holes are
	The valence band and conduction band of a solid overlap at low temperature, the solid may be
	Which impurity is doped in Si to form N-type semi-conductor?
	In a semiconductor
	The energy band gap is maximum in
	The process of adding impurities to the pure semiconductor is called
	When phosphorus and antimony are mixed in zermaniun, then
	To a germanium sample, traces of gallium are added as an impurity. The resultant sample would behave like