Question

Which of the following statements about oxygen are correct

• A. Oxygen has a definite shape
• B. Oxygen has no definite volume
• C. Oxygen can be compressed.
• D. Oxygen has any number of free surfaces.

Answer 1

Answer: (B), (C)

Oxygen can be compressed.

Oxygen is a gas.

The explanation for the correct options:

Properties of gas:

1. They do not have a definite shape and volume: The molecules of gases are loosely packed.

2. Gases can flow: They can move easily and also exhibits negligible force of attraction which doesn't allow the molecules to remain in their place.

3. Gases are compressible: The molecules are far away from each other. So, the Intermolecular spaces are maximum so they are compressible.

4. The rate is diffusion is higher than in solids and liquids because of the higher kinetic energy.

The explanation for the incorrect options:

• Gas does not have a fixed shape and volume because of the arrangement of molecules(very far away from each other)
• Gases have no free surface.

So, the correct options are B and C.