Question

Pure air is:

• A. a homogeneous mixture
• B. a mixture of metals
• C. a mixture of compounds
• D. None of the above

Hint:

A homogeneous mixture has a uniform composition throughout, while a heterogeneous mixture has distinct components visible or separable.

Answer 1

The Correct Option is A

Step 1: Understand the composition of pure air. Pure air is a mixture of gases like nitrogen, oxygen, carbon dioxide, and traces of other gases. These gases are uniformly mixed, and their proportions can vary based on the environment, but the air itself is considered a homogeneous mixture.
Step 2: Conclude. Since air is a mixture of gases that are evenly distributed, it is a
homogeneous mixture.