Solutions Chemistry Online Mock Test: NEET PYQ

1. The mixture that forms maximum boiling azeotrope is (NEET 2019)

2.

The van't Hoff factor (i) for a dilute aqueous solution of the strong electrolyte barium hydroxide is (NEET-II 2016)

3.

Which of the following is dependent on temperature? (NEET 2017)

4.

Which one of the following is incorrect for ideal solution? (NEET-II 2016)

5.

The mixture which shows positive deviation from Raoult's law is (2020)

6. Mass of glucose (C₆H₁₂O₆) required to be dissolved to prepare one litre of its solution which is isotonic with 15 g L⁻¹ solution of urea (NH₂CONH₂) is (Given: Molar mass in g mol⁻¹ C:12, H:1, O:16, N:14) [NEET 2024 Rel]

7. In water saturated air, the mole fraction of water vapour is 0.02. If the total pressure of the saturated air is 1.2 atm, the partial pressure of dry air is (Odisha NEET 2019)

8. The density of the solution is 2.15 g mL⁻¹, then mass of 2.5 mL solution in correct significant figures is: [NEET Re-2022]

9. The plot of osmotic pressure (π) vs concentration (mol L⁻¹) for a solution gives a straight line with slope 25.73 L bar mol⁻¹. The temperature at which the osmotic pressure measurement is done is (Use R = 0.083 L bar mol⁻¹ K⁻¹) [NEET 2024]

10.

Arrange the following compounds in increasing order of their solubilities in chloroform: [NEET 2024 Rel] NaCl, CH₃OH, cyclohexane, CH₃CN

A. NaCl < CH₃CN < CH₃OH < Cyclohexane
B. CH₃OH < CH₃CN < NaCl < Cyclohexane
C. NaCl < CH₃OH < CH₃CN < Cyclohexane
D. Cyclohexane < CH₃CN < CH₃OH < NaCl

11.

For an ideal solution, the correct option is (NEET 2019)

12. The following solutions were prepared by dissolving 10 g of glucose (C₆H₁₂O₆) in 250 mL of water (P₁), 10 g of urea (CH₄N₂O) in 250 mL of water (P₂) and 10 g of sucrose (C₁₂H₂₂O₁₁) in 250 mL of water (P₃). The right option for the decreasing order of osmotic pressure of these solutions is: [NEET 2021]

13. The Henry's law constant (Kₕ) values of three gases (A, B, C) in water are 145, 2 × 10⁻⁵ and 35 kbar, respectively. The solubility of these gases in water follow the order(decreasing order): [NEET 2024]

14.

In one molal solution that contains 0.5 mole of a solute, there is [NEET-2022]

15. Which of the following statements is correct regarding a solution of two components A and B exhibiting positive deviation from ideal behaviour? (Odisha NEET 2019)

16. Gas: K_H / K.bar

Ar → 40.3, CO₂ → 1.67, HCHO → 1.83×10^−5, CH₄ → 0.413

Where K_H is Henry's Law constant in water. The order of their solubility in water is: [NEET Re-2022]

A. HCHO < CH₄ < CO₂ < Ar
B. Ar < CO₂ < CH₄ < HCHO
C. CO₂ < Ar < CH₄ < HCHO
D. HCHO < CO₂ < CH₄ < Ar

17. If molality of the dilute solution is doubled, the value of molal depression constant (Kf) will be (NEET 2017)

18. During the preparation of Mohr's salt solution (Ferrous ammonium sulphate), which of the following acid is added to prevent hydrolysis of Fe²⁺ ion? [NEET 2024]

19. The correct option for the value of vapour pressure of a solution at 45°C with benzene to octane in molar ratio 3 : 2 is: [At 45°C vapour pressure of benzene is 280 mm Hg and that of octane is 420 mm Hg. Assume ideal solution] [NEET 2021]

20. The freezing point depression constant (Kf) of benzene is 5.12 K kg mol⁻¹. The freezing point depression for the solution of molality 0.078 m containing a non-electrolyte solute in benzene is (rounded off up to two decimal places): (2020)

21. Which amongst the following aqueous solution of electrolytes will have minimum elevation in boiling point? Choose the correct option :- [NEET 2023 mpr]