Which of the following statements is/are correct?1) Conductor contains a large number of electrons in the conduction band at room temperature. No energy gaps exist and the valence and conduction bands overlap.2) A semiconductor is a material in which the energy gap is so large that practically no electron can be given enough energy to jump this gap.3) An insulator is a solid with an energy gap small enough for electrons to cross rather easily from the valence band to conduction band.

Which of the following statements is/are correct?1) Conductor contains

1.	Which of the following statements is/are correct?1) Conductor contains a large number of electrons in the conduction band at room temperature. No energy gaps exist and the valence and conduction bands overlap.2) A semiconductor is a material in which the energy gap is so large that practically no electron can be given enough energy to jump this gap.3) An insulator is a solid with an energy gap small enough for electrons to cross rather easily from the valence band to conduction band.
A.	1 only
B.	2 only
C.	3 only
D.	1, 2 and 3
Answer» B. 2 only