Chemistry_Class-12_Ch-1_Solution_Topic-5_Aziotropic Mix And Osmotic Pressure 1 / 30 1.When this mixture is distilled it is possible to obtain A) Pure HCI B) Pure water C) Pure water as well as pure HCI D) Neither HCI nor H₂O in their pure states 2 / 30 2.An azeotropic solution of two liquids has boiling point lower than either when it A)Shows a negative deviation from Raoult's law B) Shows no deviation from Raoult's law C) Shows positive deviation from Raoult's law D) Is saturated 3 / 30 3. A liquid mixture boils without changing constituent is called A) Stable structure complex B) Binary liquid mixture C) Zeotropic liquid mixture D) Azeotropic liquid mixture 4 / 30 4. A mixture of two completely miscible non-ideal liquids which distil as such without change in its composition at a constant temperature as though it were a pure liquid. This mixture is known as A) Binary liquid mixture B) Azeotropic mixture C) Eutectic mixture D) Ideal mixture 5 / 30 5. Which will form maximum boiling point azeotrope Azeotropic is A) HNO3+H₂O solution B) C2H5OH+H₂O solution C) C6H6 + CH3CH3 solution D) None of these 6 / 30 6. The system that forms maximum boiling azeotrope is A) Carbondisulphide-acetone B) Benzene - toluene C) Acetone-chloroform D) n-hexane-n-heptane 7 / 30 7. Which one of the following mixtures can be separated into pure components by fractional distillation A) Benzene - toluene B) Water- ethyl alcohol C) Water-nitric acid D) Water-hydrochloric acid 8 / 30 8. minimum boiling azeotrope at If two liquids A and B form some specific composition then A) A-B interactions are stronger than those between A-A or B-B B) Vapour pressure of solution increase because more number of molecules of liquids A and B can escape from the solution C) Vapour pressure of solution decreases because less number of molecules of only one of the liquids escape from the solution D) A-B interactions are weaker than those between A-A or B-B 9 / 30 9. On the basis of information given below mark the correct option In formation: On adding acetone to methanol some of the hydrogen bonds between methanol molecules break A) At specific composition methanol acetone mixture will form minimum boiling azeotrope and will show positive deviation from Raoult's law B) At specific composition methanol-acetone mixture will form maximum boiling azetrope and will show positive deviation from Raoult's law C) At specific composition methanol-acetone mixture will form minimum boiling azeotrope and will show negative deviation from Raoult's law D) At specific composition methanol-acetone mixture will form maximum boiling azeotrope and will show negative deviation from Raoult's law 10 / 30 10. Azeotropic mixture of HCI and water has A) 84% HCI B) 22.2% HCI C) 63% HCI D) 20.2% HCI 11 / 30 11. Osmotic pressure is 0.0821 atm at temperature of 300K. Find concentration in mole/L A) 0.033 B) 0.066 C) 0.33 x〖𝟏𝟎〗^(−𝟐) D) 3 12 / 30 12. A solution contains non-volatile solute of molecular mass MP. Which of the following can be used to calculate molecular mass of the solute in terms of osmotic pressure A) B) C) D) 13 / 30 13. The osmotic pressure of a 5% (wt/vol) solution of cane sugar at 150°C is A)2.45 atm B) 5.078 atm C) 3.4 atm D) 4 atm 14 / 30 14. The relationship between osmotic pressure at 273K when 10 g glucose (P₁), 10 g urea (P2) and 10 g sucrose (P3) are dissolved in 250ml of water is A) B) C) D) 15 / 30 15. Semipermeable membrane is that which permits the passage of A) Solute molecules only B) Solvent molecules only C) Solute and solvent molecules both D) Neither solute nor solvent molecules 16 / 30 16. Two solutions A and B are separated by semi- permeable membrane. If liquid flows form A to B then A) A is less concentrated than B B) A is more concentrated than B C) Both have same concentration D) None of these 17 / 30 17. Which of the following colligative properties can provide molar mass of proteins (or polymers or colloids) with greater precision A) Relative lowering of vapour pressure B) Elevation of boiling point C) Depression in freezing point D) Osmotic pressure 18 / 30 18. The average osmotic pressure of human blood is 7.8 bar at 37°C. What is the concentration of an aqueous NaCl solution that could be used in the blood stream A) 0.16 mol / L B) 0.60 mol/L C) 0.32 mol/L D) 0.45 mol/L 19 / 30 19. If 20 g of a solute was dissolved in 500 mL of water and osmotic pressure of the solution was found to be 600 mm of Hg at 15°C, then molecular weight of the solute is A) 1000 B) 1200 C) 1400 D) 1800 20 / 30 20. The solution in which the blood cells retain their normal form are with regard to the blood A) Isotonic B) Isomotic C) Hypertonic D) Equinormal 21 / 30 21) A 5.25% solution of a substance is isotonic with a 1.5% solution of urea (molar mass = 60 gmol-¹) in the same solvent. If the densities of both the solutions are assumed to be equal to 1.0 g cm-3 , molar mass of the substance will be A) 90.0 g mol⁻¹ B) 115.0 g mol⁻¹ C) 105.0 g mol⁻¹ D) 210.0 g mol⁻¹ 22 / 30 22. What would happen if a thin slice of sugar beet is placed in a concentrated solution of NaCI A) Sugar beet will lose water from its cells B) Sugar beet will absorb water from solution C) Sugar beet will neither absorb nor lose water D) Sugar beet will dissolve in solution 23 / 30 23. Isotonic solutions have A) Equal temperature B) Equal osmotic pressure C) Equal volume D) Equal amount of solute 24 / 30 24. A 0.6% solution of urea (molecular weight = 60) would be isotonic with A) 0.1M glucose B) 0.1M KCI C) 0.6% glucose solution D) 0.6% KCl solution 25 / 30 25. A 5% solution of sugarcane (Mol. wt. = 342) is isotonic with 1% solution of X under similar conditions. The mol. wt. of X is A) 136.2 B) 68.4 34.2 D) 171.2 26 / 30 26. Which has minimum osmotic pressureA A) 26. Which has minimum osmotic pressure B) 200 ml of 1 M glucose solution C) 200 mL of 2 M urea solution D) All have same osmotic pressure 27 / 30 27. A solution containing 10 g per dm3 of urea (molecular mass = 60 g mol--1) is isotonic with a 5% solution of a nonvolatile solute. The molecular mass of this non-volatile solute is A) 350 g mol⁻¹ B) 200 g mol⁻¹ C) 250 g mol⁻¹ D) 300 g mol⁻¹ 28 / 30 28. Two solutions of KNO3and CH3COOH are prepared separately. Molarity of both is 0.1M and osmotic pressures are P₁ and P₂ respectively. The correct relationship between the osmotic pressures is A) B) C) D) 29 / 30 29. Osmotic pressure of a urea solution at 10°C is 500 mm. Osmotic pressure of the solution become 105.3 mm. when it is diluted and temperature raised to 25°C. The extent of dilution is A) 6 Times B) 5 Times C) 7 Times D) 4 Times 30 / 30 30. If a 0.1M solution of glucose (mol. wt. 180) and 0.1 molar solution of urea (mol. wt. 60) are placed on the two sides of a semipermeable membrane to equal heights, then it will becorrect to say A) There will be no net movement across the membrane B) Glucose will flow across the membrane into urea solution C) Urea will flow across the membrane into glucose solution D) Water will flow from urea solution into glucose solution Your score isThe average score is 0% 0% Exit
