Download JEE Main Important Questions with Solutions PDF: Score High Marks in JEE Main 2024












FAQs on JEE Main - Solutions Important Questions (Free PDF Download)
1. What is the definition of a solution in chemistry, and how is it different from a mixture in JEE Main?
A solution is a homogeneous mixture of two or more substances, where one substance is dissolved uniformly in another. Unlike a simple mixture, in a solution, the solute particles are evenly distributed at the molecular level throughout the solvent. JEE Main 2024 Important Questions might ask you to calculate concentrations or properties of solutions.
2. What is molarity, and how is it calculated in JEE Main Solutions Important Questions?
Molarity (M) is a measure of the concentration of a solute in a solution and is calculated as moles of solute divided by the volume of the solution in liters (M = moles of solute / liters of solution). This concept is often tested in JEE Main 2024 Important Questions related to solution concentration.
3. What is the Raoult's Law, and how does it apply to ideal solutions in JEE Main?
Raoult's Law states that the vapor pressure of a component in an ideal solution is directly proportional to its mole fraction in the solution. It is particularly useful in understanding the behavior of ideal solutions and is frequently encountered in JEE Main 2024 Important Questions related to vapor pressure and colligative properties.
4. Explain the concept of colligative properties of solutions in JEE Main?
Colligative properties depend only on the number of solute particles in the solution, not on their nature. These properties include vapor pressure lowering, boiling point elevation, freezing point depression, and osmotic pressure. Questions on colligative properties are common in JEE Main 2024 Important Questions.
5. How does the Van't Hoff factor influence colligative properties in JEE Main Solutions Important Questions?
The Van't Hoff factor (i) is the ratio of the number of moles of particles formed when a solute is dissolved in a solution to the number of moles of solute used. It influences colligative properties by indicating how many particles the solute dissociates into, affecting the extent of the property change.
6. What are non-ideal solutions in JEE Main, and how do they differ from ideal solutions?
Non-ideal solutions do not obey Raoult's Law. In these solutions, the interactions between unlike molecules are different from the interactions between like molecules. Non-ideal behavior is observed when the molecules in a solution exhibit deviations from ideal behavior, such as azeotropes and positive or negative deviations from Raoult's Law.
7. How can one calculate the freezing point depression or boiling point elevation of a solution in JEE Main Solutions Important Questions?
Freezing point depression and boiling point elevation can be calculated using the formulas: ΔTf = Kf * molality and ΔTb = Kb * molality, respectively. These equations relate the change in temperature to the molality and the specific constants for the solvent.
8. What are the factors that affect solubility, and how can they be explained using the concept of entropy in JEE Main?
Solubility is influenced by temperature, pressure, and the nature of the solute and solvent. The concept of entropy plays a role in explaining solubility as it relates to the dispersal of particles and the increase in entropy in a solution. JEE Main 2024 Important Questions may test your understanding of these factors.