Question

Which of the following is not a property of a gas?

• A. The gases have very high compressibility. On applying pressure, gas molecules come closer and decrease the volume of a gas.
• B. Gases can expand to fill the containers.
• C. Gases have a specific shape or volume.
• D. They are less denser than solids or liquids.

Answer 1

The correct option is C

Gases have a specific shape or volume.

The explanation for the correct option:

In the case of option C,

1. When you add pressure to a gas, the molecules crowd in on each other, reducing the volume of the gas.
2. Because the majority of a gas's volume is made up of enormous quantities of empty space between gas particles, gases are compressible.
3. The typical distance between gas molecules at normal temperature and standard pressure is around ten times their diameter. Gas takes on the shape and volume of its container and does not have a distinct shape.

The explanation for the incorrect options:

1. In the case of option A, the gases are extremely compressible. When you add pressure to a gas, the molecules crowd in on each other, reducing the volume of the gas. Hence, this is the property of gas.
2. In the case of option B, gases have the ability to expand in order to fill containers.
3. In the case of option D, they don't have as much density as solids or liquids. This property of gas.

Hence, the correct option is (C).