Solutions JEE

1. If mole fraction of a solute in 1kg benzene is 0.2 then molality of solute is:

2. Which of the following would exert maximum osmotic pressure?

3. 10% (m/m) aqueous potassium iodide has a density of 1.202 g mL ^-1. The true statements about this solution is:

4. Statement I: People taking a lot of salty food experience the puffiness or swelling, called edema.
Statement II: There is water retention in tissue cells and intercellular spaces because of osmosis.

5. A 5.2 molal aqueous solution of methyl alcohol, CH₃OH is supplied. What is the mole fraction of methyl alcohol in the solution?

6. Match the following columns and choose the correct option from the codes given below.

7. Statement I: When non-volatile solute is added to solvent, the vapor pressure of the solution decreases.
Statement II: As number of solvent molecules escaping from the surface is reduced, the vapor pressure of the solution is also reduced.

8. Statement I: When scuba divers come towards surface, their capillaries get blocked which is painful and dangerous to life.
Statement II: There occurred release of dissolved gases as the pressure decreases and leads to the formation of bubbles of nitrogen in the blood.

9. 25.3 g of sodium carbonate, Na₂CO₃ is dissolved in enough water to make 250 mL of solution. If sodium carbonate dissociates completely, molar concentration of sodium ion, Na ⁺ and carbonate ions, CO₃ ^2- respectively are (Molar mass of Na₂CO₃ =106 mol^-1)

10. p_A and p_B are the vapor pressure of pure liquid components A and B respectively of an ideal binary solution. If x_A represents the mole fraction of component A, the total pressure of the solution will be:

11. Statement I: The molecular weight of acetic acid determined by depression in freezing point method in benzene and water was found to be different.
Statement II: Water is polar, and benzene is non-polar.

12. Which of the following statements is true about bends?

13. 6.02x10²⁰ molecules of urea are present in 100 mL of its solution. The concentration of solution is:

14. How many grams of methyl alcohol should be added to 10 L tank of water to prevent its freezing at 268 K? 

15. What is the mole fraction of the solute in a 1m aqueous solution?

16. 58.5 g of NaCl and 180 g of glucose were separately dissolved in 1000 mL of water. Identify the correct statement regarding the elevation of boiling point (bp) of the resulting solution.

17. What is the composition of gases in the tanks used by the scuba divers?

18. Match the terms given in Column I with expression given in Column II. Select an appropriate answer from the codes given below.

19. Which of the following will have same value of Van’t Hoff factor as that of Al₂(SO₄)₃?

20. An aqueous solution is 1.00 molal in KI. Which change will cause the vapor pressure of the solution to increase? 

21. Match the following terms given in Column I with the Column II.

22. 29.2% (w/w) HCl stock solution has density of 1.25 g mL^-1. The molecular weight of HCl is 36.5 g mol^-1. The volume (mL) of stock solution required to prepare a 200 mL solution 0.4 M HCl is

23. Match the following Column I which represent concentration term to the Column II representing their corresponding formulae:

24. Statement I: High blood pressure patients are advised to take the minimum quantity of salt.
Statement II: From salt Na⁺ and Cl⁻ ion concentration increases in the body fluid which may rupture the blood cells.

25. Statement I: Polar solute dissolves in polar solvents and non-polar solute dissolves in non-polar solvents.
Statement II: Like dissolves like.