Explore topic-wise MCQs in Chemistry.

This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.

1.

A substance containing one band completely filled with electrons and other band completely empty, but with a possibility of the empty band becoming populated, behaves as a _________

A. metal
B. non-metal
C. semiconductor
D. metal and non-metal
Answer» D. metal and non-metal
Discussion
2.

For a metallic crystal, which band do the delocalized electrons occupy?

A. Conduction band
B. Valence band
C. Both, conduction and valence bands
D. There are no delocalized electrons
Answer» B. Valence band
Discussion
3.

According to the band theory, increase in number of atoms participating in crystal formation leads to ________ in number of molecular orbitals containing electrons.

A. decrease
B. increase
C. no change
D. either increase or decrease, depending upon the size of the atoms
Answer» C. no change
Discussion
4.

Which of the following properties holds true for a metalloid?

A. Poor conductors of heat and electricity
B. Malleable
C. Ductile
D. Non-brittle
Answer» B. Malleable
Discussion
5.

Metals are good conductors of heat and electricity. This property is conferred by _______ bonds.

A. covalent
B. ionic
C. metallic
D. hydrogen
Answer» D. hydrogen
Discussion