Solutions — practice questions
79 curated practice questions from Solutions (Chemistry NEET, NTA Exams) — 23 medium, 40 easy, 16 hard. Every question includes the final answer free; step-by-step worked solutions with a free account.
- A 5.2 molal aqueous solution of methyl alcohol, CH 3 OH, is supplied. What is the mole fraction of methyl alcohol in…
- The boiling point of 0.2 mol kg -1 solution of X in water is greater than equimolal solution of Y in water. Which one…
- Among sodium phosphate, sodium sulphate and sodium chloride the solubility in water decreases as:
- An aqueous solution is 1.00 molal in KI. Which change will cause the vapour pressure of the solution to increase?
- The van't Hoff factor (i) for a dilute aqueous solution of the strong electrolyte barium hydroxide is
- 10 cm 3 of 0.1 N monobasic acid requires 15 cm 3 of sodium hydroxide solution whose normality is:
- If 8g of an non-electrolyte solute is dissolved in 114 g of n-octane to reduce its vapour pressure to 80%, the molar…
- The vapour pressure of water at 20°C is 17.5 mmHg. If 18 g of glucose (C 6 H 12 O 6 ) is added to 178.2 g of water at…
- A molal solution is one that contains one mole of a solute in:
- The volume of water to be added to N 2 HCl to prepare 500 cm 3 of N 10 solution is:
- If α is the degree of dissociation of Na 2 SO 4 , the van't Hoff factor (i) used for calculating the molecular mass is:
- Which of the following statements is correct regarding a solution of two components A and B exhibiting positive…
- The osmotic pressure of a dilute solution of an ionic compound XY in water is four times that of a solution of 0.01 M…
- Maximum freezing point, for 1 molal solution of assuming complete ionisation in each case, will be:
- The mixture which shows positive deviation from Raoult's law is
- 18 g of glucose (C 6 H 12 O 6 ) is added to 178.2 g of water. The vapour pressure of water for this aqueous solution at…
- If sodium sulphate is considered to be completely dissociated into cations and anions in aqueous solution, the change…
- In water saturated air, the mole fraction of water vapour is 0.02. If the total pressure of the saturated air is 1.2…
- On mixing heptane and octane form an ideal solution. At 373 K, the vapour pressure of the two liquid components…
- Benzene and toluene form nearly ideal solutions. At 20°C, the vapour pressure of benzene is 75 Torr and that of toluene…
- Which one of the following aqueous solutions will exhibits highest boiling point?
- A 0.004 M solution of K 2 SO 4 is isotonic with 0.010 M solution of glucose at the same temperature. The apparent…
- When a non-volatile solute is added to a pure solvent, which statement does not hold true?
- 0.2 mole of HCl and 0.1 mole of barium chloride were dissolved in water to produce a 500 ml solution. The molarity of…
- Molecules of benzoic acid (C 6 H 5 COOH) dimerise in benzene. 'w' g of the acid dissolved in 30 g of benzene shows a…
- Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A)…
- For an aqueous solution freezing point is -0.186°C. Elevation of the boiling point of the same solution is (k f = 1.86…
- What is the mole fraction of ethanol in 20% by weight solution in water?
- A 5.25% solution of a substance is isotonic with a 1.5% solution of urea (molar mass = 60g mol -1 ) in the same…
- At 80°C, the vapour pressure of pure liquid 'A' is 520 mm Hg and that of pure liquid 'B' is 1000 mm Hg. If a mixture…
- Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A)…
- Sodium chloride is soluble in water but not in benzene because:
- Which amongst the following aqueous solutions of electrolytes will have minimum elevation in boiling point?
- The degree of dissociation (α) of a weak electrolyte, A x B y is related to van't Hoff factor (i) by the expression:
- The density of 1 M solution of a compound 'X' is 1.25 g mL -1 . The correct option for the molality of solution is…
- When mercuric iodide is added to the aqueous solution of potassium iodide:
- In 1 kg of a solvent (K f = 14 K kg -1 ), 75.2 g phenol was dissolved. The depression in freezing point of the solvent…
- The mass of glucose that should be dissolved in 50 g of water in order to produce the same lowering of vapour pressure…
- Which of the following 0.1 M aqueous solution will have the lowest freezing point?
- Freezing point of a 4% aqueous solution of X is equal to freezing point of 12% aqueous solution of Y. If molecular…
- 1 M and 2.5 litre NaOH solution mixed with another 0.5 M and 3 L NaOH solution. Then find out molarity of resultant…
- An azeotropic solution of two liquids has boiling point lower than either of them when it:
- Two solutions of a substance (non-electrolyte) are mixed in the following manner. 480 mL of 1.5 M first solution + 520…
- Camphor is often used in molecular mass determination because:
- A solution of sodium sulfate contains 92 g of Na + ions per kilogram of water. The molality of Na + ions in that…
- A mixture of ethyl alcohol and propyl alcohol has a vapour pressure of 290 mm at 300 K. The vapour pressure of propyl…
- The freezing point depression constant (K f ) of benzene is 5.12 kg mol -1 . The freezing point depression for the…
- Of the following 0.10 m aqueous solutions, which one will exhibit the largest freezing point depression?
- A solution contains 0.1 mol of acetamide in 1 litre of glacial acetic acid. When the solution is cooled, the first…
- An aqueous solution freezes at -0.186°C, then elevation in boiling point is:
- K 2 HgI 4 is 40% ionised in aqueous solution. The value of its van't Hoff factor (i) is:
- A solution containing 10 g per dm 3 of urea (molecular mass = 60 g mol -1 ) is isotonic with a 5% solution of a…
- Elevation in the boiling point for 1 molal solution of glucose is 2K. The depression in the freezing point of 2 molal…
- According to Raoult's law the decrease in solvent vapour pressure over the solution is equal to:
- Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A)…
- A compound X undergoes complete tetramerisation in a given organic solvent. The Van't Hoff factor is:
- A solution is prepared by dissolving 0.6 g of urea (molar mass = 60 g mol -1 ) and 1.8 g of glucose (molar mass = 180 g…
- In a 0.2 molal aqueous solution of a weak acid HX, the degree of ionisation is 0.3. Taking k f for water as 1.85 K kg…
- A solution of urea (mol. mass 56 g mol -1 ) boils at 100.18 o C at the atmospheric pressure. If K f and K b for water…
- The Van't Hoff factor for an electrolyte which undergoes dissociation and association in solvent are respectively:
- What would be the molality of 20% (mass/mass) aqueous solution of KI? (molar mass of KI = 166 g mol -1 )
- A solution has a 1:4 mole ratio of pentane to hexane. The vapour pressure of the pure hydrocarbons at 20°C are 440 mm…
- At room temperature, a dilute solution of urea is prepared by dissolving 0.60 of urea in 360 g of water. If the vapour…
- The volume of water to be added to 100 cm 3 of 0.5 N H 2 SO 4 to get decinormal concentration is:
- In a mixture of A and B, components show negative deviation when:
- Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A)…
- The freezing point of water is depressed by 0.37 ° C in a 0.01 molal NaCl solution. The freezing point of 0.02 molal…
- Molal depression constant for a solvent is 4.0 K kg mol -1 . The depression in the freezing point of the solvent for…
- The freezing point of equimolal aqueous solutions will be highest for:
- Vapour pressure of pure 'A' is 70 mm of Hg at 25 ° C. It forms an ideal solution with 'B' in which mole fraction of A…
- 1 g of a non-volatile non-electrolyte solute is dissolved in 100 g of two different solvents A and B whose…
- Two liquids X and Y form an ideal solution at 300 K, vapour pressure of the solution containing 1 mol of X and 3 mol of…
- If sodium sulphate is considered to be completely dissociated into cations and anions in aqueous solution, the change…
- Density of a 2.05 M solution of acetic acid in water is 1.02 g/mL. The molality of the solution is:
- The mole fraction of the solute in one molal aqueous solution is:
- Liquids A and B form an ideal solution in the entire composition range. At 350 K, the vapor pressure of pure A and pure…
- Which one of the following statements regarding Henry's law not correct?
- A sample of H 2 SO 4 (density 1.8 g/ml) is 90% by weight. What is the volume of the acid that has to be used to make 1…
- 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…