Solutions — practice questions

106 curated practice questions from Solutions (Chemistry JEE Main, NTA Exams) — 24 medium, 73 easy, 9 hard. Every question includes the final answer free; step-by-step worked solutions with a free account.

• What weight of glucose must be dissolved in 100 g of water to lower the vapour pressure by 0.20 mm Hg? (Assume dilute…
• The vapour pressure of an aqueous solution of glucose is 750 mm of Hg at 373 K. The molality of glucose solution is:
• A solution is made by dissolving 20g of a substance in 500 mL of water. Its osmotic pressure was found to be 600mm of…
• What happens to freezing point of benzene when small quantity of napthalene is added to benzene? (Jee Main 2024)
• Two liquids HNO 3 (A) and water (B) form a maximum boiling azeotrope when mixed in the ratio of 68% and 32%…
• Osmotic pressure is generally preferred for determining the molecular masses of protein because
• The relative lowering of vapour pressure of an aqueous solution of a non volatile solute of molecular weight 60 (which…
• The molarity of a solution obtained by mixing 750 mL of 0.5 (M) HCl with 250 mL of 2(M) HCl will be :
• Which of the following solutions will have the lowest freezing point?
• The mole fraction of C 2 H 5 OH (Mol. wt. = 46) in 5 molal aqueous ethyl alcohol solution is
• Liquid 'M' and liquid 'N' form an ideal solution. The vapour pressure of pure liquids 'M' and 'N' are 450 and 700…
• Two liquid A and B form an ideal solution at temperature T. When the total vapour pressure above the solution is 400…
• Given below are few mixtures formed by mixing two components. Which of the following binary mixtures will have same…
• What will be the lowering of vapour pressure in 1 molal aqueous solution at 100 ° C ? (if solute is non-volatile)
• Solute A associates as dimer in water. When 0.7 g of solute A is dissolved in 42.0 g of water, it depresses the…
• What is the molarity of a solution containing 10g of NaOH in 500 mL of solution ?
• A solution of two miscible liquids showing negative deviation from Raoult's law will have: (Jee Main 2024)
• Boiling point of a 2% aqueous solution of a nonvolatile solute A is equal to the boiling point of 8% aqueous solution…
• Van't Hoff factor for a dilute solution of sodium argentocynaide is:
• The depression in freezing point observed for a formic acid solution of concentration 0.5 mL L –1 is 0.0405°C. Density…
• If a substance 'A' dissolves in solution of a mixture of 'B' and 'C' with their respective number of moles as n A , n B…
• Consider a binary mixture of volatile liquid. If at X_ A and vapour pressure of solution is 580 torr then the…
• Given below are two statements. One is labelled as Assertion and the other is labelled as Reason. Assertion: CHCl 3 and…
• Which of the following aqueous solutions has the highest boiling point?
• Vapour pessure of CCl 4 at 25ºC is 143 mm Hg. 0.5g of a non-volatile solute (mol. wt. 65) is dissolved in 100 cm 3 of…
• The vapour pressure of benzene at a certain temp. is 640 mm Hg . A non-volatile-non-electrolyte solid weighing 2.175g…
• For an ideal binary solution with P_ A ^ P_ B ^ which relation between x A (mole fraction of A in liquid phase) and y A…
• The vapour pressure of solution of 5g of non-electrolyte in 100 g of water at a particular temperature is 2985 Nm –2 …
• What will be the molality of a solution of glucose in water which is 10 % w/w ?
• Which of the following will have same value of van’t Hoff factor as that of K 4 [Fe (CN) 6 ] ?
• In three beakers labelled as (A), (B) and (C), 100 mL of water, 100 mL of 1M solution of glucose in water and 100 mL of…
• The boiling point of 0.1 molal aqueous solution of urea is 100.18ºC at 1 atm. The molal elevation constant of water is
• The vapour pressure of solvent decreased by 10 mm of mercury when a non-volatile solute was added to the solvent. The…
• To a 4 L of 0.2 M solution of NaOH, 2 L of 0.5 M NaOH is added. The molarity of resulting solution is :
• The freezing point among equimolal aqueous solutions will be highest for:
• The vapour pressure of pure liquids A and B are 400 and 600 mmHg, respectively at 298K. On mixing the two liquids, the…
• A solution containing 30 g of non-volatile solute exactly in 90 g of water has a vapour pressure of 2.8 kPa at 298 K…
• 3 moles of P and 2 moles of Q are mixed, what will be their total vapour pressure in the solution if their pure…
• Pure benzene freezes at 5.45ºC at a certain place but a 0.374m solution of tetrachloroethane in benzene freezes at…
• The normality of 10% H 2 SO 4 solution (d = 1.1g/cm 3 ) is
• The amount of urea to be dissolved in 500 cc of water (K f = 1.86) to produce a depression of 0.186ºC in the freezing…
• The molal elevation constant for water is 0.56ºC per kg of water. The boiling point of solution made by dissolving 6.0g…
• To what extent must a given solution of concentration 40mg. Silver nitrate per c.c be diluted to yield a solution of…
• What will be the osmotic pressure in pascals exerted by a solution prepared by dissolving 1.0g of polymer of molar mass…
• The molal b.p. constant for water is 0.513ºC kg mol –1 . When 0.1 mole of sugar is dissolved in 200g of water, the…
• Lowering of vapour pressure of one molal aqueous solution containing a non volatile solute at 100°C is:
• A solution is obtained by mixing 200 g of 30% and 300 g of 20% solution by weight. What is the percentage of solute in…
• Sea water is desalinated to get fresh water by which of the following methods ?
• What weight of glycerol should be added to 600 g of water in order to lower its freezing point by 10º C ? (K f = 1.86º…
• K_ 4 [F e(C N)_ 5 ] may have the same freezing point at equal concentration of which of the following solution.
• The solution from the following with highest depression in freezing point/lowest freezing point is (Jee Main 2024)
• Dry air was passed successively through a solution of 5 g solute in 180 g of water and then through pure water. The…
• For 1 molal aqueous solution of the following compounds, which one will show the highest freezing point?
• Evaluate the following statements for their correctness. (A) The elevation in boiling point temperature of water will…
• What will be the degree of dissociation of 0.1 M Mg(NO 3 ) 2 solution if van’t Hoff factor is 2.74 ?
• A liquid S has a vapour pressure P° at 30°C. If x gm of non-volatile solute is dissolved in y gm of pure liquid, the…
• The vapour pressure of a pure liquid A is 70 torr at 27ºC. It forms an ideal solution with another liquid B. The mole…
• The ratio of van't Hoff factor, if PBr 5 and PCl 5 are assumed to be soluble in water and remain same as in solid state…
• If 15 gm of a solute in 100 gm of water makes a solution that freezes at –1.0ºC, then 30 gm of the same solute in 100…
• The freezing point of one litre of an aqueous solution of non electrolyte having an osmotic pressure of 2 atm at 300 K…
• Osmotic pressure of a solution containing 2g dissolved protein per 300 cm 3 of solution in 20 mm of Hg at 27ºC. The…
• When acetone and chloroform are mixed together, hydrogen bonds are formed between them. Which of the following…
• The freezing point (in ° C) of a solution containing 0.1 g of K 3 [Fe(CN)] 6 ] (Mol. Wt. 329) in 100 g of water (K f =…
• The vapour pressure of water at room temperature is 23.8 mm Hg. The vapour pressure of an aqueous solution of sucrose…
• What will be the molarity of 30 mL of 0.5 M H 2 SO 4 solution when diluted to 500 mL ?
• The vapour pressure of pure benzene and toluene are 160 and 60 torr respectively. The mole fraction of toluene in…
• Which of the following plots represent the behaviour of an ideal binary liquid solution?
• At certain hill-station, pure water boils at 99.725ºC. If K b for water is 0.513ºC kg mol –1 , the boiling point of…
• Identify the mixture that shows positive deviations from Raoult's law. (Jee Main 2024)
• A solution of 1.25g of non-electrolyte in 20g of water freezes at 271.94 K. If K f = 1.86 K Kg mol –1 , then the…
• An aqueous solution containing 1g of urea boils at 100.25ºC. The aqueous solution containing 3g of glucose in the same…
• An aqueous solution of a non-electrolyte solute boils at 100.52º C. The freezing point of the solution will be (K f =…
• The relative lowering of vapour pressure of aqueous solution of urea is 0.009. If K f of water is 1.86 °C m -1 , the…
• What is the mass percentage of carbon tetrachloride if 22g of benzene is dissolved in 122g of carbon tetrachloride ?
• If 1g of solute (molar mass = 50g mol –1 ) is dissolved in 50g of solvent and the elevation in boiling point is 1K. The…
• Which statement about the composition of vapour over an ideal 1 : 1 molar mixture of benzene and toluene is correct at…
• Intermolecular forces between n-hexane and n-heptane are nearly same as between hexane and heptane individually. When…
• An aqueous solution of urea containing 18g urea in 1500 cm 3 of the solution has a density equal to 1.052 g/cm 3 . If…
• The molarity (M) of an aqueous solution containing 5.85g of NaCl in 500 mL water is: (Given: Molar mass Na : 23 and Cl…
• The weight of a non-volatile solute (molecular weight = 40), which should be dissolved in 114 g octane to reduce its…
• In the depression of freezing point experiment A. Vapour pressure of the solution is less than that of pure solvent B…
• Liquid A and B form an ideal solution. If vapour pressure of pure A and B are 500 Nm –2 and 200 Nm –2 respectively, the…
• A solution containing 12.5g of non-electrolyte substance in 185g of water shows boiling point elevation of 0.80 K…
• Study the figures given below and mark the correct statement. array l (i) (ii) array
• For which of the following solutes the van’t Hoff factor is not greater than one ?
• How many grams of a dibasic acid (Mol. wt. = 200) should be present in 100 mL of its aqueous solution to give…
• What is the mole fraction of glucose in 10% w/w glucose solution ?
• Vapour pressure of a pure liquid X is 2 atm at 300 K. It is lowered to 1 atm on dissolving 1g of Y in 20g of liquid X…
• Rectified spirit contains 95% ethanol by weight. The mole fraction of ethanol will be
• Two solutions A and B are prepared by dissolving 1 g of non-volatile solutes X and Y. respectively in 1 kg of water…
• What is the expected freezing point of 0.015 M hexaamminecobalt(III)chloride? (K f = 1.86 K kg mol -1 for water).
• For the given electrolyte A x B y . The degree of dissociation 'α' can be given as:
• The quantity which changes with temperature is: (Jee Main 2024)
• Ethylene glycol is used as an antifreeze in a cold climate. Mass of ethylene glycol which should be added to 4 kg water…
• P _ A =(235 y -125 xy ) mm of Hg where P A is partial pressure of A x is mole fraction of B in liquid phase in the…
• Why is the molecular mass determined by measuring colligative property in case of some solutes abnormal ?
• 150 mL of C 2 H 5 OH (density = 0.78g ml –1 ) is diluted to one litre by adding water. Molarity of the solution is
• The molar freezing point constant for water is 1.86º C/m. If 342g of cane sugar (C 12 H 22 O 11 ) is dissolved in 1000…
• If the elevation in boiling point of a solution of 10gm of solute (mol. wt. = 100) in 100 gm of water is T _ b , the…
• Match List I with List II List I List II (A). Van’t Hoff factor, i I. Cryoscopic constant (B). k_ f II. Isotonic…
• A solute X when dissolved in a solvent associated to form a pentamer. The value of van’t Hoff factor (i) for the solute…
• Grapes placed in three beakers X, Y and Z containing different type of solutions are shown in figures. If beaker X…
• The elevation in boiling point of a solution of 9.43g of MgCl 2 in 1 kg of water is (K b = 0.52 K kg mol –1 , Molar…
• By dissolving 5 g substance in 50 g of water, the decrease in freezing point is 1.2°C. The gram molal depression is…
• 2g of sugar is added to one litre of water to give sugar solution. What is the effect of addition of sugar on the…
• What amount of CaCl 2 (i = 2.47) is dissolved in 2 litres of water so that its osmotic pressure is 0.5 atm at 27ºC ?

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