8
MCQ (Single Correct Answer)
Iodine molecules are held in the crystals lattice by ...........
A
London forces
B
dipole-dipole interactions
C
covalent bonds
D
coulombic forces
9
MCQ (Single Correct Answer)
Which of the following is a network solid?
A
$\mathrm{SO}_2$ (solid)
B
$\mathrm{I}_2$
C
Diamond
D
$\mathrm{H}_2 \mathrm{O}$ (ice)
10
MCQ (Single Correct Answer)
Which of the following solids is not an electrical conductor?
1. $\mathrm{Mg}(\mathrm{s})$
2. TiO (s)
3. $\mathrm{I}_2$ (s)
4. $\mathrm{H}_2 \mathrm{O}(\mathrm{s})$
A
Only 1
B
Only 2
C
3 and 4
D
2, 3 and 4
11
MCQ (Single Correct Answer)
Which of the following is not the characteristic of ionic solids?
A
Very low value of electrical conductivity in the molten state
B
Brittle nature
C
Very strong forces of interactions
D
Anisotropic nature
12
MCQ (Single Correct Answer)
Graphite is a good conductor of electricity due to the presence of ...........
A
Ione pair of electrons
B
free valence electrons
C
cations
D
anions