Question

Which of the following is not a physical property of water?

• A. Water is a colorless and tasteless liquid.
• B. On increasing pressure, the freezing point of water decreases
• C. Water has higher specific heat and thermal conductivity.
• D. As a solvent, water is excellent.

Answer 1

The correct option is B

On increasing pressure, the freezing point of water decreases

The explanation for the correct option:

B. On increasing pressure, the freezing point of water decreases

Physical properties of water:

• The chemical formula of water is ${\mathrm{H}}_2\mathrm{O}$.
• It appears as a colorless/odorless/tasteless liquid in its natural state.
• The boiling point of water is $100°\mathrm{C}$ while the freezing point of water, which is $0°\mathrm{C}\mathrm{or}32°\mathrm{F}$.
• Water behaves as an excellent solvent.
• It usually has higher specific heat and thermal conductivity.

The property which is not true for water is that- With increasing pressure, the freezing point of water decreases. While the correct statement will be that-"As the pressure increases the rate of crystallization also increases. i.e., the freezing point also increases."

The explanation for incorrect options:

All the other properties are considered physical properties of water. Thus, options A, C, and D are incorrect.

Hence, the correct option is B i.e. On increasing pressure, the freezing point of water decreases.