Question

At the melting point, water exists in the:

• A. Solid state
• B. Liquid state
• C. The solid and gaseous state
• D. Solid and liquid state

Answer 1

The correct option is D

Solid and liquid state

The explanation for the correct option

Option (D):

• The melting point is the temperature at which solid changes into a liquid state.
• The melting point for water is 0$°$C.
• At this temperature, water exists in both solid and liquid states.

The explanation for the incorrect option

Option (A): Water exists in a solid state in the form of ice. At 0$°$C water exists in both solid state and liquid state. Below 0$°$C water exists in a solid state (ice) only.

Option (B): At any temperature greater than 0$°$C, water exists in a liquid state.

Option (C): Water cannot exist in both solid state and gaseous state simultaneously.

Hence, option (D) is the correct option.