- Amal Augustine
- January 31, 2026
Stop Losing Marks with Electrolyte Non Electrolyte Numerical MCQs Solution for NEET, JEE & CUET
Understanding electrolyte non electrolyte numerical mcqs solution is extremely important for Class 11 and Class 12 Chemistry aspirants, especially those preparing for CBSE board exams, NEET, JEE, CUET, and other competitive examinations. Questions based on electrolytes and non-electrolytes frequently appear as numerical MCQs testing concepts such as ionization, van’t Hoff factor, colligative properties, and electrical conductivity.
In chemistry, an electrolyte is a substance that dissociates into ions when dissolved in water or molten form and conducts electricity. Common examples include NaCl, KCl, HCl, and MgSO₄. A non-electrolyte, on the other hand, does not dissociate into ions and hence does not conduct electricity; examples include glucose, urea, and sucrose. Most electrolyte non electrolyte numerical mcqs solution problems revolve around this fundamental difference.
One major area where electrolyte non electrolyte numerical mcqs solution becomes important is colligative properties. Electrolytes produce more particles due to dissociation, increasing the van’t Hoff factor (i). Non-electrolytes generally have a van’t Hoff factor close to 1. Numerical MCQs often ask aspirans to calculate freezing point depression or boiling point elevation and compare electrolyte and non-electrolyte solutions of the same concentration. Mastery of electrolyte non electrolyte numerical mcqs solution helps aspirants avoid common calculation mistakes.
Another frequent topic in electrolyte non electrolyte numerical mcqs solution is osmotic pressure. Electrolyte solutions exert higher osmotic pressure than non-electrolyte solutions at the same molarity because they form more ions. MCQs may ask which solution shows higher osmotic pressure or require direct numerical calculation using π = iMRT. Practicing electrolyte non electrolyte numerical mcqs solution strengthens understanding of particle count rather than chemical identity.
Electrical conductivity problems are also part of electrolyte non electrolyte numerical mcqs solution. Strong electrolytes show high conductivity, weak electrolytes show partial conductivity, and non-electrolytes show negligible conductivity. MCQs often test whether a given substance is a strong electrolyte, weak electrolyte, or non-electrolyte based on numerical data. Repeated exposure to electrolyte non electrolyte numerical mcqs solution builds confidence in such classifications.
Van’t Hoff factor calculations are central to electrolyte non electrolyte numerical mcqs solution. Numerical MCQs may involve dissociation of salts like CaCl₂, AlCl₃, or association of substances like acetic acid. These questions test whether aspirants correctly account for ion formation or molecular association. Practicing electrolyte non electrolyte numerical mcqs solution ensures accuracy in determining effective particle concentration.
In competitive exams, electrolyte non electrolyte numerical mcqs solution questions are often time-bound and calculation-heavy. Aspirants must quickly decide whether the solute behaves as an electrolyte or non-electrolyte before applying formulas. This skill is developed only through consistent practice of electrolyte non electrolyte numerical mcqs solution from previous years’ papers and mock tests.
To score well, aspirants should focus on understanding concepts rather than memorizing formulas. Regular practice of electrolyte non electrolyte numerical mcqs solution improves speed, accuracy, and conceptual clarity. It also helps aspirants distinguish between tricky options designed to confuse electrolytes with non-electrolytes.
Electrolyte Non Electrolyte Numerical MCQs Solution with Answers
1. The aqueous solution that has the lowest vapour pressure at a given temperature is
A. 0.1 molal sodium phosphate
B. 0.1 molal barium chloride
C. 0.1 molal sodium chloride
D. 0.1 molal glucose
Answer: A
2. 0.4 g of H₂, 22 g of CO₂, and 6.4 g of SO₂ are taken in a container. Total pressure is 1.6 atm. The partial pressure of CO₂ is
A. 1.0 atm
B. 0.8 atm
C. 0.5 atm
D. 1.6 atm
Answer: A
3. Which of the following will show a negative deviation from Raoult’s law?
A. Acetone–benzene
B. Acetone–ethanol
C. Benzene–methanol
D. Acetone–chloroform
Answer: D
4. 58.4 g of NaCl and 180 g of glucose are dissolved separately in 1000 mL water. Identify the correct statement
A. NaCl solution shows higher elevation of boiling point
B. Glucose solution shows higher elevation
C. Both show equal elevation
D. Neither shows elevation
Answer: A
5. For an ideal binary solution, total vapour pressure is
A. PA+XA(PB−PA)P_A + X_A(P_B-P_A)
B. PA+XA(PA−PB)P_A + X_A(P_A-P_B)
C. PB+XA(PB−PA)P_B + X_A(P_B-P_A)
D. PB+XA(PA−PB)P_B + X_A(P_A-P_B)
Answer: D
6. Vapour pressure after mixing CHCl₃ and CH₂Cl₂ is
A. 173.9 mm Hg
B. 615 mm Hg
C. 347.9 mm Hg
D. 285.9 mm Hg
Answer: C
7. Ethylene glycol required to lower freezing point of 1 kg water to –2.8°C is
A. 72 g
B. 39 g
C. 93 g
D. 27 g
Answer: C
8. Dissolution of a gas in a liquid is governed by
A. Raoult’s law
B. Henry’s law
C. Dalton’s law
D. Van’t Hoff factor
Answer: B
9. Mass of solute to reduce vapour pressure of octane by 20%
A. 11.4 g
B. 9.8 g
C. 12.8 g
D. 10 g
Answer: D
10. Elevation of boiling point when freezing point = –0.186°C
A. 0.52 K
B. 1.04 K
C. 1.34 K
D. 0.052 K
Answer: D
11. Assertion–Reason (vapour pressure & osmotic pressure)
A. Both correct, reason explains assertion
B. Both correct, reason does not explain
C. Assertion correct, reason incorrect
D. Both incorrect
Answer: B
12. Lowering of vapour pressure for urea vs sucrose
A. Equal
B. Greater than second
C. Less than second
D. Double
Answer: A
13. Weight of solute for relative lowering 0.02
A. 4 g
B. 8 g
C. 6 g
D. 10 g
Answer: C
14. Mass required to reduce vapour pressure to 99%
A. 4 g
B. 8 g
C. 5.6 g
D. 3 g
Answer: A
15. Molar mass of sulphur in naphthalene
A. 160 g mol⁻¹
B. 190 g mol⁻¹
C. 260 g mol⁻¹
D. 450 g mol⁻¹
Answer: B
16. Vapour pressure lowering by sucrose
A. 0.12 mm Hg
B. 0.125 mm Hg
C. 1.15 mm Hg
D. 1.25 mm Hg
Answer: B
17. Van’t Hoff factor for Na₂SO₄
A. 2.05
B. 2.63
C. 3.11
D. 0.381
Answer: B
18. Freezing point of 0.1 m weak acid (30% ionized)
A. –0.558°C
B. –0.36°C
C. –0.360°C
D. –0.24°C
Answer: D
19. Molar mass of protein
A. 5122 g mol⁻¹
B. 122044 g mol⁻¹
C. 61038 g mol⁻¹
D. 31012 g mol⁻¹
Answer: D
20. Molecular formula of compound (CH₂O empirical)
A. C₃H₆O₃
B. C₆H₁₂O₆
C. C₂H₄O₂
D. C₄H₈O₄
Answer: B
21. Relative lowering of vapour pressure
A. 0.0099
B. 1.1597
C. 0.84
D. 0.9901
Answer: A
22. Van’t Hoff factor for KCl solution
A. 2
B. 1.8
C. 2.5
D. 1.3
Answer: B
23. On dilution of solution
A. Osmotic pressure increases
B. Boiling point increases
C. Freezing point decreases
D. Vapour pressure increases
Answer: D
24. Pair showing positive deviation
A. Acetone & n-heptane
B. Ethanol & chloroform
C. Phenol & aniline
D. Chloroform & acetone
Answer: B
25. Freezing point of sucrose solution
A. –0.372°C
B. 0.52°C
C. 0.37°C
D. –0.57°C
Answer: A
26. Solute required to lower vapour pressure by 10%
A. 30 g
B. 50 g
C. 60 g
D. 24 g
Answer: C
27. Molal depression constant of solvent
A. 0.01
B. 0.001
C. 0.0001
D. 0.1
Answer: D
28. Ratio of loss in solvent to gain in CaCl₂ tube
A. p0p\frac{p^0}{p}
B. pp0\frac{p}{p^0}
C. p0−pp0\frac{p^0-p}{p^0}
D. p−p0p\frac{p-p^0}{p}
Answer: C
29. Activity in microcurie
A. 1.6 × 10¹⁰
B. 1.6 × 10⁷
C. 3.2 × 10⁴
D. 3.2 × 10⁷
Answer: C
30. Ethylene glycol in radiators results in
A. Reducing viscosity
B. Lowering freezing point
C. Lowering boiling point
D. Reducing specific heat
Answer: B
Conclusion
In conclusion, electrolyte non electrolyte numerical mcqs solution plays a vital role in chemistry examinations. A strong grasp of ionization, van’t Hoff factor, colligative properties, and conductivity is essential. With systematic practice of electrolyte non electrolyte numerical mcqs solution, aspirants can confidently tackle MCQs and significantly improve their exam performance.
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
Beyond academics, Amal Augustine is an avid reader of science journals, a dedicated research student, and a technology enthusiast who loves programming and exploring the world of Computer Science. Through ExQuizMe, he aims to make learning accessible, enjoyable, and empowering for students across the globe.