Question

$\begin{array}{cc}\text{Column - I}& \text{Column - II}\\ \text{(Type of solid)}& \text{(Properties)}\\ \text{(i) Ionic solids}& \text{(A) Giant molecules}\\ \text{(ii) Network solids}& \text{(B) Volatile liquids or}\\ & \text{soft solid at room}\\ & \text{temperature}\\ \text{(iii) Metallic solids}& \text{(C) No free ion to move}\\ & \text{in solid state}\\ \text{(iv) Hydrogen bonded}& \text{(D) Positive ion}\\ \text{molecular solid}& \text{surrounded by sea}\\ & \text{of electrons}\end{array}$
Which of the following is the best matched option?

• A. i-A, ii- D, iii- C, iv-B
• B. i-C, ii- A, iii- D, iv-B
• C. i-D, ii- D, iii- A, iv-B
• D. i-C, ii- B, iii- D, iv-A

Answer 1

The correct option is B i-C, ii- A, iii- D, iv-B

In ionic solids, strong coulombic forces binds the ions together, so they are not free to move. However, in aqueous state or in molten state, these forces get weaker and ions get free to move so they can conduct electricity.
Network solids are intact giant molecules due to their large three dimensional structure.
In metallic solid, positive ions arc surrounded by the sea of electrons.
Hydrogen bonded molecular solids may be volatile liquids or soft solids at room temperature.