________ contain zero number of unpaired electrons

• diamagnetic

• paramagnetic

• ferromagnetic

• ferrimagnetic

Which of the following types of solids is represented by substances like glass, rubber, fused silica, plastics etc.

• polycrystalline

• amorphous

• crystalline

• plasma

Which of the following metals is not diamagnetic?

• Mercury

• Iron

• Bismuth

• Gold

Which of the following is not a property of crystalline solid?

• sharp melting point

• isotropy

• definite geometry

• anisotropy

The highest filled energy band in a solid is called

• valence band

• conduction band

• fermi level

• equal level

The valence electrons do not directly measure the following property of a metal

• electrical conductivity

• thermal conductivity

• shear modulus

• metallic luster

Solids with high value of conductivity are called

• Conductors

• Non metal

• Insulators

• Semi Conductors

At zero kelvin semiconductors are

• Perfect metals

• Perfect semiconductor

• Perfect Non metals

• Perfect Insulators

The electrons in Valence bond are

• freely moving inside the solid

• tightly bonded inside the solid

• lies in the innermost orbits and cannot be made free

• lies in the outermost orbits and cannot be made free

At 0 K Conduction band will be

• fully occupied

• completely empty

• partially occupied by electrons

• partially occupied by holes