Question

Air is a/an:

• A. Compound
• B. Element
• C. Electrolyte
• D. None of the above

Hint:

Air is a mixture of gases, not a single element, compound, or electrolyte. The classification of matter depends on whether it is a pure substance or a mixture.

Answer 1

The Correct Option is D

To answer the question correctly, let's evaluate each option given for the nature of air:

1. Compound: A compound is a substance formed when two or more chemical elements are chemically bonded together. Compounds have a specific composition and properties. Air is not a compound because it does not consist of elements chemically bonded in fixed ratios.
2. Element: An element is a pure substance consisting of only one type of atom. Since air is a mixture of gases (primarily nitrogen and oxygen, with traces of other gases), it cannot be classified as an element.
3. Electrolyte: Electrolytes are substances that conduct electricity when dissolved in water or molten. Air is not an electrolyte because it is not a liquid solution capable of conducting electricity.
4. None of the above: This option suggests that air does not fall under any of the previous categories. Air is best described as a mixture of multiple gases, primarily nitrogen (around 78%) and oxygen (around 21%), along with small amounts of other gases like argon and carbon dioxide. Mixtures do not have a fixed composition.

Based on the explanation above, the correct answer is None of the above, as air is not classified as a compound, element, or electrolyte. It is a mixture of different gases.