- Amal Augustine
- February 3, 2026
Ultimate Glucose Urea Solution Comparison MCQs Class 12 Chemistry
In Class 12 chemistry, especially in the Solutions chapter, numerical and conceptual questions comparing glucose and urea solutions are extremely common. Glucose urea solution comparison mcqs help aspirants clearly understand how non-electrolytes behave in aqueous solutions and how their physical properties differ when subjected to colligative property calculations. These MCQs frequently appear in CBSE board exams, NEET, JEE Main, and other competitive tests.
The foundation of glucose urea solution comparison mcqs lies in the fact that both glucose and urea are non-electrolytes. This means they do not ionize in water and hence have a Van’t Hoff factor (i) equal to 1. Because of this similarity, many aspirants assume both solutions behave identically, but careful numerical analysis shows meaningful differences.
One major concept tested through glucose urea solution comparison mcqs is osmotic pressure. Osmotic pressure depends on the number of solute particles present per unit volume. Even though glucose and urea do not dissociate, their molar masses differ significantly (glucose = 180 g/mol, urea = 60 g/mol). As a result, for the same mass concentration, a urea solution contains more moles than a glucose solution, leading to higher osmotic pressure.
Another important area covered in glucose urea solution comparison mcqs is freezing point depression. Since freezing point depression depends on molality, a urea solution generally produces a greater depression in freezing point compared to a glucose solution when equal masses are dissolved in the same amount of solvent. This concept is frequently tested using numerical MCQs.
Similarly, boiling point elevation forms the basis of many glucose urea solution comparison mcqs. Urea, having a lower molar mass, contributes more moles per gram, leading to a greater elevation in boiling point than glucose under identical conditions. Aspirants are often asked to compare boiling point changes using formulas involving the molal elevation constant.
A very high-yield topic in glucose urea solution comparison mcqs is isotonic solutions. Two solutions are isotonic if they have the same osmotic pressure at a given temperature. Many MCQs test whether a given concentration of glucose solution is isotonic with a urea solution. Solving such problems requires equating osmotic pressure expressions and carefully handling molar masses.
Glucose urea solution comparison mcqs also focus on relative lowering of vapour pressure. Since this property depends only on the number of solute particles, urea solutions generally show a higher relative lowering of vapour pressure compared to glucose solutions at the same mass percentage. MCQs often present tricky options to test this conceptual clarity.
In competitive exams, glucose urea solution comparison mcqs are designed to test not just formula application but also logical reasoning. Questions may involve comparing molality, molarity, or percentage concentration, pushing aaspirants to convert units correctly before drawing conclusions.
From a biological perspective, glucose urea solution comparison mcqs are relevant in understanding intravenous fluids and isotonic conditions in blood cells. These applications strengthen conceptual understanding beyond pure numerical problem-solving.
Repeated practice of glucose urea solution comparison mcqs helps aspirants avoid common mistakes such as confusing molarity with molality or overlooking molar mass differences. These glucose urea solution comparison MCQs also improve speed and accuracy, which are crucial in time-bound exams like NEET and JEE.
Glucose Urea Solution Comparison MCQs with Answers
1. Normal solution is
A. inert solution
B. acidic solution
C. one litre containing one equivalent
D. basic solution
Answer: C
2. A solution containing 6.0 g of urea is isotonic with a solution containing 10 g of a non-electrolytic solute X. The molar mass of X (in g mol⁻¹) is
A. 50
B. 100
C. 75
D. 68
Answer: B
3. x% (w/w) solution of urea is isotonic with 4% (w/v) solution of a non-volatile solute of molar mass 120 g mol⁻¹. The value of x is
A. 2
B. 4
C. 3
D. 5
Answer: A
4. Which of the following pair of solutions is isotonic?
(Assume complete dissociation of NaCl)
A. i, ii
B. i, iii
C. ii, iv
D. ii, iii
Answer: B
5. Solutions A, B, C and D are 0.1 M glucose, 0.05 M NaCl, 0.05 M BaCl₂, and 0.1 M AlCl₃ respectively. Which pair is isotonic?
A. B and C
B. A and B
C. A and D
D. A and C
Answer: B
6. Isotonic solutions have same
A. temperature
B. vapour pressure
C. freezing point
D. osmotic pressure
Answer: D
7. A 0.5 g/L solution of glucose is isotonic with a 2.5 g/L solution of an organic compound. Molecular weight of the compound is
A. 300
B. 600
C. 900
D. 1200
Answer: C
8. Red blood cells placed in a solution show neither haemolysis nor crenation. The solution is
A. hypertonic
B. hypotonic
C. isotonic
D. isotopic
Answer: C
9. Blood cells will remain unchanged in
A. hypertonic solution
B. hypotonic solution
C. isotonic solution
D. none of the above
Answer: C
10. A 25% solution of cane sugar (M = 342 g mol⁻¹) is isotonic with 5% solution of substance A. Molecular weight of A is
A. 6.84
B. 68.4
C. 25
D. 684
Answer: B
11. Acetaldehyde treated with dilute NaOH forms
A. CH₃CH₂OH
B. Aldol product
C. CH₃COOH
D. CH₃CH₃
Answer: B
12. Which pair of solutions is isotonic at the same temperature?
A. 0.1 M urea & 0.1 M NaCl
B. 0.1 M glucose & 0.2 M NaCl
C. 0.1 M NaCl & 0.1 M CH₃COOH
D. 0.1 M NaCl & 0.1 M KNO₃
Answer: D
13. Which pair is isotonic?
A. 0.01 M BaCl₂ & 0.015 M NaCl
B. 0.001 M Al₂(SO₄)₃ & 0.001 M BaCl₂
C. 0.001 M CaCl₂ & 0.001 M Al₂(SO₄)₃
D. 0.01 M BaCl₂ & 0.001 M CaCl₂
Answer: A
14. Which set of urea and sucrose solutions is isotonic?
A. 9.1 g/L urea & 6.0 g/L sucrose
B. 3.0 g/L urea & 3.0 g/L sucrose
C. 6.0 g/L urea & 9.0 g/L sucrose
D. 3.0 g/L urea & 17.1 g/L sucrose
Answer: D
15. Which solution is isotonic with 6% (w/v) urea?
A. 0.25 M NaCl
B. 0.5 M NaCl
C. 0.1 M NaCl
D. 1 M NaCl
Answer: B
16. Isotonic solutions have same
A. surface tension
B. vapour pressure
C. osmotic pressure
D. viscosity
Answer: C
17. A 1.6% solution of unknown substance is isotonic with 2.4% urea solution. Molecular mass of unknown substance is
A. 30
B. 40
C. 80
D. 90
Answer: B
18. 5% cane sugar solution is isotonic with 0.877% of X. Molecular weight of X is
A. 126.98
B. 119.96
C. 95.5
D. 59.98
Answer: D
19. 0.06% (w/v) urea solution is isotonic with
A. 0.06% glucose
B. 0.6% glucose
C. 0.01 M glucose
D. 0.1 M glucose
Answer: C
20. If 1% solution of X is isotonic with 5% cane sugar solution, molar mass of X is
A. 68.4
B. 34.2
C. 136.2
D. 171.2
Answer: A
21. 0.6% urea solution is isotonic with
A. 0.1 M glucose
B. 0.6% glucose
C. 0.1 M KCl
D. 0.6% KCl
Answer: A
22. Number of isotonic solution pairs shown in the table is
A. A only
B. C only
C. D only
D. B only
Answer: B
23. White fumes around concentrated HCl are due to
A. emission of HCl gas
B. condensation due to moisture
C. formation of chlorine
D. water vapour only
Answer: B
24. Sodium hydride in water produces
A. acidic solution
B. basic solution
C. neutral solution
D. cannot say
Answer: B
25. Which pair is isotonic?
A. 0.15 M NaCl & 0.1 M Na₂SO₄
B. 0.2 M urea & 0.1 M sugar
C. 0.1 M BaCl₂ & 0.2 M urea
D. 0.4 M MgSO₄ & 0.1 M NH₄Cl
Answer: A
26. Negatively charged AgI sol is formed when
A. equal molar solutions mixed
B. excess KI present
C. excess AgNO₃ present
D. both equal
Answer: B
27. A 5% glucose solution is isotonic with 2% unknown solute. Molecular weight of unknown solute is
A. 60
B. 80
C. 72
D. 98
Answer: C
28. Pure water from sea water is obtained by
A. centrifugation
B. reverse osmosis
C. plasmolysis
D. sedimentation
Answer: B
29. A 6% urea solution is isotonic with
A. 1 M glucose
B. 0.05 M glucose
C. 6% glucose
D. 25% glucose
Answer: A
30. A 5.25% solution is isotonic with 1.5% urea solution. Molecular mass of substance is
A. 90
B. 115
C. 105
D. 210
Answer: D
Conclusion Glucose Urea Solution Comparison MCQs
In conclusion, glucose urea solution comparison mcqs are an essential part of Class 12 chemistry preparation. They integrate concepts of colligative properties, osmotic pressure, isotonicity, and molecular mass in a highly exam-relevant manner. Mastering glucose urea solution comparison mcqs not only boosts problem-solving confidence but also ensures strong conceptual clarity for both board and competitive examinations.
Amal Augustine is the founder of ExQuizMe, a dynamic learning and quiz platform built to make education engaging, competitive, and fun. A passionate learner and an academic achiever, Amal completed his schooling at Government HSS Manjapra, graduating with 92.5% in Computer Science. He later earned his degree from St. Stephen’s College, University of Delhi, one of India’s most prestigious arts and science institutions.
Currently, Amal is pursuing his Master’s degree at National Sun Yat-sen University, Taiwan, where he continues to deepen his interest in research and technology. Throughout his school and college years, he won 50+ national-level interschool and collegiate quiz competitions, was
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