Solutions Practice Questions
JEE · Chemistry · 1674 free MCQs with instant results and detailed explanations.
1674
Total
381
Easy
761
Medium
532
Hard
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Topics in Solutions
Osmotic Pressure
277
Types of Solutions
250
Colligative Properties
251
Ideal and Non-Ideal Solutions
324
Van't Hoff Factor
320
Raoult's Law
252
Sample Questions from Solutions
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
Which of the following is a characteristic of a true solution?
A.
Particles are visible
B.
Homogeneous mixture
C.
Settles upon standing
D.
Exhibits Tyndall effect
Show Answer & Explanation
Correct Answer: B
A true solution is a homogeneous mixture where the solute is completely dissolved in the solvent, resulting in a consistent composition throughout.
Q2
Easy
Which type of solution has the smallest particle size?
A.
Suspension
B.
Colloid
C.
True solution
D.
Emulsion
Show Answer & Explanation
Correct Answer: C
True solutions have particles that are less than 1 nm in size, making them smaller than those in colloids or suspensions.
Q3
Easy
Which of the following best describes a colloidal solution?
A.
Particles settle upon standing
B.
Particles are invisible to the naked eye
C.
Shows Tyndall effect
D.
Uniform composition throughout
Show Answer & Explanation
Correct Answer: C
Colloidal solutions consist of larger particles that can scatter light, showing the Tyndall effect, while true solutions do not.
Q4
Medium
What is the main principle behind Raoult's Law?
A.
The vapor pressure of a solvent increases with the amount of solute.
B.
The vapor pressure of an ideal solution is directly proportional to the mole fraction of the solvent.
C.
The boiling point of a solution is lower than that of the pure solvent.
D.
The solute does not affect the vapor pressure of the solvent.
Show Answer & Explanation
Correct Answer: B
Raoult's Law states that the vapor pressure of an ideal solution is directly proportional to the mole fraction of the solvent present in the solution.
Q5
Medium
Which of the following statements best describes the deviation from Raoult's Law for a non-ideal solution?
A.
The vapor pressure decreases less than expected.
B.
The vapor pressure increases with the addition of solute.
C.
The vapor pressure is maintained constant irrespective of the composition.
D.
The vapor pressure deviates either positively or negatively from Raoult's Law depending on the interactions.
Show Answer & Explanation
Correct Answer: D
Non-ideal solutions can exhibit either positive or negative deviations from Raoult's Law based on the types of intermolecular interactions present.
Q6
Medium
In which of the following cases would Raoult's Law apply?
A.
An ideal solution of two liquids with similar intermolecular forces.
B.
A solution containing a strong electrolyte.
C.
A solution of a gas in a liquid under high pressure.
D.
A concentrated solution of a non-volatile solute.
Show Answer & Explanation
Correct Answer: A
Raoult's Law applies best to ideal solutions, especially those composed of liquids with similar intermolecular forces, leading to negligible interactions.
Q7
Medium
If the vapor pressure of pure solvent is 90 mmHg and the solution contains a non-volatile solute, what is the vapor pressure of the solution?
A.
90 mmHg
B.
Less than 90 mmHg
C.
More than 90 mmHg
D.
Cannot be determined without molarity
Show Answer & Explanation
Correct Answer: B
The presence of a non-volatile solute lowers the vapor pressure of the solvent; thus, the vapor pressure of the solution is less than 90 mmHg.
Q8
Hard
Which of the following solutions will show the lowest boiling point elevation?
A.
0.1 m NaCl
B.
0.1 m KCl
C.
0.1 m CaCl2
D.
0.1 m sugar
Show Answer & Explanation
Correct Answer: D
Boiling point elevation depends on the number of particles in solution. NaCl, KCl, and CaCl2 ionize in solution, creating more particles than sugar, which does not ionize.
Q9
Hard
In which solvent would you expect glucose to be least soluble?
A.
Water
B.
Ethanol
C.
Benzene
D.
Acetic Acid
Show Answer & Explanation
Correct Answer: C
Glucose is polar and soluble in polar solvents. Benzene is a nonpolar solvent, thus glucose would be least soluble in benzene.
Q10
Hard
What is the primary factor that affects the solubility of gases in liquids?
A.
Temperature
B.
Pressure
C.
Molecular weight of gas
D.
pH of the solution
Show Answer & Explanation
Correct Answer: B
According to Henry's law, the solubility of gases in liquids increases with an increase in pressure.
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Solutions — JEE Chemistry Practice Questions Online
This page contains 1674 practice MCQs for the chapter Solutions in JEE Chemistry. The questions are organized by difficulty — 381 easy, 761 medium, 532 hard — so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 6 topics, giving you comprehensive coverage of the entire chapter.