Question

Fog is a solution of:

• A. Liquid in gas
• B. Gas in liquid
• C. Solid in gas
• D. Gas in gas

Hint:

Fog is formed when water vapor condenses into tiny droplets suspended in the air, creating a liquid-in-gas mixture.

Answer 1

The Correct Option is A

Fog is a solution of liquid in gas. In chemistry, a solution is a homogeneous mixture of two or more substances. When identifying the constituents of a solution, the terms solute and solvent are used. In this context, fog is formed when tiny droplets of a liquid (usually water) are dispersed in a surrounding gas (air). This type of solution is commonly referred to as an aerosol.

In the given options:

• Liquid in gas - This accurately describes fog, as it consists of liquid water droplets suspended in air.
• Gas in liquid - This would refer to a different type of solution, such as soda water (carbon dioxide in water).
• Solid in gas - This describes smoke or another form of particulate matter in air.
• Gas in gas - This refers to a homogeneous mixture of gases, like the air itself.

Therefore, the correct answer is Liquid in gas.

Answer 2

Fog is being classified by its physical state combination. Check each option against what fog is actually made of.

1. Liquid in gas: fog forms when tiny droplets of liquid water hang suspended in air. That is a liquid dispersed in a gas, matching fog exactly.
2. Gas in liquid: this describes something like a dissolved gas bubbling through a liquid, the reverse combination from what happens in fog.
3. Solid in gas: this would describe something like smoke or dust floating in air, solid particles rather than liquid droplets.
4. Gas in gas: this describes one gas mixed uniformly into another, such as ordinary air, with no separate droplets at all.

Since fog is made of fine liquid water droplets floating in air, it fits liquid dispersed in gas.

So the correct answer is liquid in gas.