Types of Solutions in Chemistry

In chemistry, a solution is a homogeneous mixture of two or more substances. One substance dissolves into another and forms a single-phase system. Typically, the substance in a smaller amount is the solute, while the substance in a larger amount is the solvent.

Classification of Solutions Based on Physical States

• Gas in gas: e.g., air (a mixture of oxygen and nitrogen).
• Gas in liquid: e.g., carbon dioxide in soft drinks.
• Gas in solid: e.g., hydrogen in palladium.
• Liquid in gas: e.g., water vapor in air.
• Liquid in liquid: e.g., alcohol in water.
• Liquid in solid: e.g., mercury in zinc (amalgam).
• Solid in gas: e.g., smoke.
• Solid in liquid: e.g., salt in water.
• Solid in solid: e.g., alloys like brass (zinc in copper).

Aqueous and Non-Aqueous Solutions

Aqueous solutions are those where water acts as the solvent. For example, sugar dissolved in water. On the other hand, non-aqueous solutions use solvents other than water. An example includes sulfur in carbon disulfide.

Examples of Types of Solutions

Solute	Solvent	Example
Gas	Gas	Air (O2 in N2)
Gas	Liquid	CO2 in soda
Solid	Solid	Brass (Zn in Cu)

Conclusion

Solutions can be found all around us in daily life—from the air we breathe to the drinks we consume. Knowing the types of solutions helps in understanding chemical properties and reactions effectively. Whether it’s a gas in gas or solid in liquid, every type plays a crucial role in chemistry and industry.

Solubility MCQs with Answers

Practice these multiple-choice questions (MCQs) based on the topic of Solubility to enhance your conceptual understanding for NEET, JEE, CBSE, and other competitive exams. Each question is followed by the correct answer and a brief explanation.

1. Which of the following is an example of a gas in a liquid solution?
   A. Air
   B. Smoke
   C. CO₂ in soda ✅
   D. Alcohol in water
2. In an alloy like brass, what type of solution is formed?
   A. Solid in gas
   B. Solid in solid ✅
   C. Liquid in solid
   D. Gas in solid
3. What is the solvent in an aqueous solution?
   A. Alcohol
   B. Water ✅
   C. Benzene
   D. Ether
4. Which pair represents a gas in a gas solution?
   A. Hydrogen in palladium
   B. Oxygen in nitrogen ✅
   C. CO₂ in water
   D. Salt in water
5. Which of the following is a non-aqueous solution?
   A. Salt in water
   B. Alcohol in water
   C. Sugar in tea
   D. Sulfur in carbon disulfide ✅

Whic