Chemistry Chemical Bonding and Molecular Structure JEE Advanced Previous Years Question Single Correct MCQ
Published on: August 14, 2026

Statement -1 : Band gap in germanium is small, because

Statement -2 : The energy spread of each germanium atomic energy level is infinitesimally small.

A
Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.
B
Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1
C
Statement-1 is True, Statement-2 is False
D
Statement-1 is False, Statement-2 is True

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The correct answer is:
C

Statement -1 : G ermanium is a semiconductor, where the energy gap between adjacent bands is sufficiently small for thermal energy to be able to promote a small number of electrons from the full valence band to the empty conduction band. This leaves both bands partially filled, so the material can conduct electricity.

Statement -2 : Incorrect statement.

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