Solutions
Fast practice, instant feedback. Timer auto-submits when time’s up.
Avg score: 75% • Most missed: “A solution containing components Aand B follows Raoult's law when [2002]”
Solutions
Time left 00:00
25 Questions

1. Vapour pressure of chloroform (CHCl3) and dichloromethane (CH2Cl2) at 25ºC are 200 mm Hgand 41.5 mm Hg respectively. Vapour pressure of the solution obtained by mixing 25.5 g of CHCl3and 40 g of CH2Cl2 at the same temperature will be: (Molecular mass of CHCl3 = 119.5 uand molecular mass of CH2Cl2 = 85 u) . [2012]
2. During osmosis - flow of water through a semipermeable membrane is [2006]
3. An ideal solution is formedwhen its components [1988]
4. 25.3 g of sodium carbonate - Na2 CO3 is dissolved in enough water to make 250 mLof solution. If sodium carbonate dissociates completely - molar concentration of sodium ions - Na+and carbonate ions - CO32- are respectively(Molar mass of Na2CO3 = 106 g mol-“1) [2010]
5. Which one is a colligative property? [1992]
6. Camphor is often used in molecular mass determination because [2004]
7. A solution containing components Aand B follows Raoult's law when [2002]
8. If 0.1 Msolution of glucose and 0.1 Msolution of urea are placed on two sides of the semipermeable membrane to equal heights - then it will be correct to say that [1992]
9. The mole fraction of the solute in one molal aqueous solution is: [2005]
10. A solution containing 10 g per dm3 of urea(molecular mass = 60 g mol-“1) is isotonic with a solution of anon-volatile solute. The molecular mass of this nonvolatile solute is [2006]
11. Asolution of sucrose (molar mass = 342 g mol-“1) has been prepared by dissolving 68.5 g of sucrose in 1000 g of water. The freezing point of the solution obtained will be (f for water = 1.86 Kkg mol-“1) . [2010]
12. 1.00 g of a non-electrolyte solute (molar mass 250 g mol-“1) was dissolved in 51.2 g of benzene. If the freezing point depression constant - Kf of benzene is 5.12 K kg mol-“1 - the freezing point of benzene will be lowered by [2006]
13. The vapour pressure of a solvent decreased by 10mm of mercury when a non-volatile solute was added to the solvent. The mole fraction of the solute in the solution is 0.2. What should be the mole fraction of the solvent if the decrease in the vapour pressure is to be 20mm of mercury? [1998]
14. According to Raoult's law - relative lowering of vapour pressure for a solution is equal to [1995]
15. All form ideal solution except [1988]
16. 200 mL of an aqueous solution of aprotein contains its 1.26 g. The osmotic pressure of this solution at 300 Kis found to be 2.57 × 10-“3 bar. The molar mass of protein will be (R= 0.083 Lbar mol-“1 K-“1) [2011]
17. The vapour pressure of two liquids -˜P-™ and -˜Q-™ are 80 and 60 torr - respectively. The total vapour pressure of solution obtained by mixing 3 mole of Pand 2 mole of Qwould be [2005]
18. Which of the following colligative property can provide molar mass of proteins (or polymers or colloids) with greatest precision? [2000]
19. A solution of urea (mol. mass 56 g mol-1) boils at 100.18° C at the atmospheric pressure. If Kf and Ka for water are 1.86and 0.512 K kg mol-1 respectively - the above solution will freeze at [2005]
20. Which of the following 0.10 m aqueous solutions will have the lowest freezing point? [1997]
21. The relative lowering of the vapour pressure is equal to the ratio between the number of [1991]
22. The vapour pressure at a given temperature of an ideal solution containing 0.2 mol of a nonvolatile soluteand 0.8 mol of solvent is 60 mm of Hg. The vapour pressure of the pure solvent at the same temperature is [1996]
23. An aqueous solution is 1.00 molal in KI. Which change will cause the vapour pressure of the solution to increase? [2010]
24. The freezing point depression constant for water is -“ 1.86ºCm-“1. If 5.00 g Na2 SO4 is dissolved in 45.0 g H2O - the freezing point is changed by -“ 3.82ºC. Calculate the van-™t Hoff factor for Na2 SO4. [2011]
25. The van-™t Hoff factor i for a compound which undergoes dissociation in one solvent and association in other solvent is respectively: [2011]

⚡ Recently practiced quizzes in this topic
Live quiz activity
Objective GS (General Studies) in हिन्दी - Indian States & The Company Rajasthan GK Hindi - Fairs & Festivals Objective GS (General Studies) in हिन्दी - Indian Polity - Historical Background of Constitution Objective GS (General Studies) in हिन्दी - Indian Polity - Judiciary Rajasthan GK Hindi - Culture Objective GS in Hindi - General Geography - Air Pressure, Humidity & Air Movement Rajasthan GK Hindi - Energy Rajasthan GK Hindi - Tourism Rajasthan GK Hindi - Rajasthan Introduction Rajasthan GK Hindi - Rivers & Lakes
 
❤ If you liked Fatskills, consider supporting us by checking out The Life Manuals You Never Got.

🌈  Our mission is to help improve your scores in any subject and exam withonline quizzes, practice tests, study guides, & advice for students. Since 2018.
About | Explore | User Guide | Topics | Subjects | Doubt Solver | Career Aptitude Test | Answers | Free Tools | What Should We Know?
Privacy | Terms |
Without work one finishes nothing. - Ralph Waldo Emerson
© 2026 Fatskills.com

All trademarks, logos and brand names are the property of their respective owners. All company, product and service names used in this website are for identification purposes only. Use of these names, trademarks and brands does not imply endorsement.