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JEE Main 2024 (Online) 1st February Evening Shift
Mass of ethylene glycol (antifreeze) to be added to $18.6 \mathrm{~kg}$ of water to protect the freezing point at $-24^{\circ} \mathrm{C}$ is ________...
JEE Main 2024 (Online) 29th January Morning Shift
The osmotic pressure of a dilute solution is $$7 \times 10^5 \mathrm{~Pa}$$ at $$273 \mathrm{~K}$$. Osmotic pressure of the same solution at $$283 \ma...
JEE Main 2023 (Online) 15th April Morning Shift
The vapour pressure of $30 \%(\mathrm{w} / \mathrm{v})$ aqueous solution of glucose is __________ $\mathrm{mm} ~\mathrm{Hg}$ at $25^{\circ} \mathrm{C}...
JEE Main 2023 (Online) 13th April Evening Shift
Sea water contains $$29.25 \% ~\mathrm{NaCl}$$ and $$19 \% ~\mathrm{MgCl}_{2}$$ by weight of solution. The normal boiling point of the sea water is __...
JEE Main 2023 (Online) 13th April Morning Shift
Solution of $$12 \mathrm{~g}$$ of non-electrolyte (A) prepared by dissolving it in $$1000 \mathrm{~mL}$$ of water exerts the same osmotic pressure as ...
JEE Main 2023 (Online) 12th April Morning Shift
80 mole percent of $$\mathrm{MgCl}_{2}$$ is dissociated in aqueous solution. The vapour pressure of $$1.0 ~\mathrm{molal}$$ aqueous solution of $$\mat...
JEE Main 2023 (Online) 11th April Morning Shift
0.004 M K$$_2$$SO$$_4$$ solution is isotonic with 0.01 M glucose solution. Percentage dissociation of K$$_2$$SO$$_4$$ is ___________ (Nearest integer)...
JEE Main 2023 (Online) 10th April Evening Shift
An aqueous solution of volume $$300 \mathrm{~cm}^{3}$$ contains $$0.63 \mathrm{~g}$$ of protein. The osmotic pressure of the solution at $$300 \mathrm...
JEE Main 2023 (Online) 10th April Morning Shift
If the degree of dissociation of aqueous solution of weak monobasic acid is determined to be 0.3, then the observed freezing point will be ___________...
JEE Main 2023 (Online) 8th April Evening Shift
If the boiling points of two solvents X and Y (having same molecular weights) are in the ratio $$2: 1$$ and their enthalpy of vaporizations are in the...
JEE Main 2023 (Online) 8th April Morning Shift
The vapour pressure vs. temperature curve for a solution solvent system is shown below. The boiling point of the solvent is __________ $${ }^{\circ} ...
JEE Main 2023 (Online) 6th April Evening Shift
Consider the following pairs of solution which will be isotonic at the same temperature. The number of pairs of solutions is / are ___________. A. $$1...
JEE Main 2023 (Online) 6th April Morning Shift
Mass of Urea $$\left(\mathrm{NH}_{2} \mathrm{CONH}_{2}\right)$$ required to be dissolved in $$1000 \mathrm{~g}$$ of water in order to reduce the vapou...
JEE Main 2023 (Online) 1st February Evening Shift
$$20 \%$$ of acetic acid is dissociated when its $$5 \mathrm{~g}$$ is added to $$500 \mathrm{~mL}$$ of water. The depression in freezing point of such...
JEE Main 2023 (Online) 1st February Morning Shift
25 mL of an aqueous solution of KCl was found to require 20 mL of 1 M $$\mathrm{AgNO_3}$$ solution when titrated using $$\mathrm{K_2CrO_4}$$ as an ind...
JEE Main 2023 (Online) 31st January Morning Shift
At $$27^{\circ} \mathrm{C}$$, a solution containing $$2.5 \mathrm{~g}$$ of solute in $$250.0 \mathrm{~mL}$$ of solution exerts an osmotic pressure of ...
JEE Main 2023 (Online) 30th January Evening Shift
Lead storage battery contains $38 \%$ by weight solution of $\mathrm{H}_{2} \mathrm{SO}_{4}$. The van't Hoff factor is $2.67$ at this concentration. T...
JEE Main 2023 (Online) 30th January Morning Shift
A solution containing $$2 \mathrm{~g}$$ of a non-volatile solute in $$20 \mathrm{~g}$$ of water boils at $$373.52 \mathrm{~K}$$. The molecular mass of...
JEE Main 2023 (Online) 29th January Morning Shift
Solid Lead nitrate is dissolved in 1 litre of water. The solution was found to boil at 100.15$$^\circ$$C. When 0.2 mol of NaCl is added to the resulti...
JEE Main 2023 (Online) 25th January Evening Shift
The number of pairs of the solutions having the same value of the osmotic pressure from the following is _________. (Assume 100% ionization) A. 0.500 ...
JEE Main 2023 (Online) 25th January Morning Shift
The osmotic pressure of solutions of PVC in cyclohexanone at 300 K are plotted on the graph. The molar mass of PVC is ____________ g mol$$^{-1}$$ (Nea...
JEE Main 2023 (Online) 24th January Evening Shift
The total pressure observed by mixing two liquids A and B is 350 mm Hg when their mole fractions are 0.7 and 0.3 respectively. The total pressure beco...
JEE Main 2022 (Online) 29th July Evening Shift
$$1.80 \mathrm{~g}$$ of solute A was dissolved in $$62.5 \mathrm{~cm}^{3}$$ of ethanol and freezing point of the solution was found to be $$155.1 \mat...
JEE Main 2022 (Online) 29th July Morning Shift
If $$\mathrm{O}_{2}$$ gas is bubbled through water at $$303 \mathrm{~K}$$, the number of millimoles of $$\mathrm{O}_{2}$$ gas that dissolve in 1 litre...
JEE Main 2022 (Online) 28th July Evening Shift
A gaseous mixture of two substances A and B, under a total pressure of $$0.8$$ atm is in equilibrium with an ideal liquid solution. The mole fraction ...
JEE Main 2022 (Online) 28th July Morning Shift
$$150 \mathrm{~g}$$ of acetic acid was contaminated with $$10.2 \mathrm{~g}$$ ascorbic acid $$\left(\mathrm{C}_{6} \mathrm{H}_{8} \mathrm{O}_{6}\right...
JEE Main 2022 (Online) 27th July Evening Shift
When a certain amount of solid A is dissolved in $$100 \mathrm{~g}$$ of water at $$25^{\circ} \mathrm{C}$$ to make a dilute solution, the vapour press...
JEE Main 2022 (Online) 26th July Evening Shift
The elevation in boiling point for 1 molal solution of non-volatile solute A is $$3 \mathrm{~K}$$. The depression in freezing point for 2 molal soluti...
JEE Main 2022 (Online) 29th June Evening Shift
Elevation in boiling point for 1.5 molal solution of glucose in water is 4 K. The depression in freezing point for 4.5 molal solution of glucose in wa...
JEE Main 2022 (Online) 29th June Morning Shift
1.2 mL of acetic acid is dissolved in water to make 2.0 L of solution. The depression in freezing point observed for this strength of acid is 0.0198$$...
JEE Main 2022 (Online) 28th June Evening Shift
2.5 g of protein containing only glycine (C2H5NO2) is dissolved in water to make 500 mL of solution. The osmotic pressure of this solution at 300 K is...
JEE Main 2022 (Online) 28th June Morning Shift
The vapour pressures of two volatile liquids A and B at 25$$^\circ$$C are 50 Torr and 100 Torr, respectively. If the liquid mixture contains 0.3 mole ...
JEE Main 2022 (Online) 27th June Evening Shift
A solution containing 2.5 $$\times$$ 10$$-$$3 kg of a solute dissolved in 75 $$\times$$ 10$$-$$3 kg of water boils at 373.535 K. The molar mass of the...
JEE Main 2022 (Online) 27th June Morning Shift
2 g of a non-volatile non-electrolyte solute is dissolved in 200 g of two different solvents A and B whose ebullioscopic constants are in the ratio ...
JEE Main 2022 (Online) 26th June Evening Shift
The osmotic pressure exerted by a solution prepared by dissolving 2.0 g of protein of molar mass 60 kg mol$$-$$1 in 200 mL of water at 27$$^\circ$$C i...
JEE Main 2022 (Online) 26th June Morning Shift
A 0.5 percent solution of potassium chloride was found to freeze at $$-$$0.24$$^\circ$$C. The percentage dissociation of potassium chloride is _______...
JEE Main 2022 (Online) 24th June Evening Shift
A company dissolves 'x' amount of CO2 at 298 K in 1 litre of water to prepare soda water. X = __________ $$\times$$ 10$$-$$3 g. (nearest integer) (Giv...
JEE Main 2022 (Online) 24th June Morning Shift
The osmotic pressure of blood is 7.47 bar at 300 K. To inject glucose to a patient intravenously, it has to be isotonic with blood. The concentration ...
JEE Main 2021 (Online) 31st August Evening Shift
1.22 g of an organic acid is separately dissolved in 100 g of benzene (Kb = 2.6 K kg mol$$-$$1) and 100 g of acetone (Kb = 1.7 K kg mol$$-$$1). The ac...
JEE Main 2021 (Online) 27th August Evening Shift
40 g of glucose (Molar mass = 180) is mixed with 200 mL of water. The freezing point of solution is __________ K. (Nearest integer) [Given : Kf = 1.86...
JEE Main 2021 (Online) 27th August Morning Shift
1 kg of 0.75 molal aqueous solution of sucrose can be cooled up to $$-$$4$$^\circ$$C before freezing. The amount of ice (in g) that will be separated ...
JEE Main 2021 (Online) 26th August Evening Shift
83 g of ethylene glycol dissolved in 625 g of water. The freezing point of the solution is ____________ K. (Nearest integer)[Use : Molal Freezing poin...
JEE Main 2021 (Online) 26th August Morning Shift
Of the following four aqueous solutions, total number of those solutions whose freezing point is lower than that of 0.10 M C2H5OH is __________ (Integ...
JEE Main 2021 (Online) 27th July Evening Shift
In a solvent 50% of an acid HA dimerizes and the rest dissociates. The van't Hoff factor of the acid is __________ $$\times$$ 10$$-$$2.(Round off to t...
JEE Main 2021 (Online) 27th July Morning Shift
1.46 g of a biopolymer dissolved in a 100 mL water at 300 K exerted an osmotic pressure of 2.42 $$\times$$ 10$$-$$3 bar.The molar mass of the biopolym...
JEE Main 2021 (Online) 25th July Evening Shift
When 3.00 g of a substance 'X' is dissolved in 100 g of CCl4, it raises the boiling point by 0.60 K. The molar mass of the substance 'X' is __________...
JEE Main 2021 (Online) 25th July Morning Shift
CO2 gas is bubbled through water during a soft drink manufacturing process at 298 K. If CO2 exerts a partial pressure of 0.835 bar then x m mol of CO2...
JEE Main 2021 (Online) 20th July Evening Shift
The vapour pressures of A and B at 25$$^\circ$$C are 90 mm Hg and 15 mm Hg respectively. If A and B are mixed such that the mole fraction of A in the ...
JEE Main 2021 (Online) 20th July Morning Shift
At 20$$^\circ$$ C, the vapour pressure of benzene is 70 torr and that of methyl benzene is 20 torr. The mole fraction of benzene in the vapour phase a...
JEE Main 2021 (Online) 18th March Evening Shift
A solute A dimerizes in water. The boiling point of a 2 molal solution of A is 100.52$$^\circ$$C. The percentage association of A is __________. (Roun...
JEE Main 2021 (Online) 18th March Morning Shift
2 molal solution of a weak acid HA has a freezing point of 3.885$$^\circ$$C. The degree of dissociation of this acid is ___________ $$\times$$ 10$$-$$...
JEE Main 2021 (Online) 17th March Evening Shift
A 1 molal K4Fe(CN)6 solution has a degree of dissociation of 0.4. Its boiling point is equal to that of another solution which contains 18.1 weight pe...
JEE Main 2021 (Online) 17th March Morning Shift
The oxygen dissolved in water exerts a partial pressure of 20 kPa in the vapour above water. The molar solubility of oxygen in water is __________ $$\...
JEE Main 2021 (Online) 16th March Evening Shift
At 363 K, the vapour pressure of A is 21 kPa and that of B is 18 kPa. One mole of A and 2 moles of B are mixed. Assuming that this solution is ideal, ...
JEE Main 2021 (Online) 16th March Morning Shift
AB2 is 10% dissociated in water to A2+ and B$$-$$. The boiling point of a 10.0 molal aqueous solution of AB2 is __________$$^\circ$$C. (Round off to t...
JEE Main 2021 (Online) 26th February Evening Shift
When 12.2 g of benzoic acid is dissolved in 100 g of water, the freezing point of solution was found to be $$-$$0.93$$^\circ$$C (Kf(H2O) = 1.86 K kg m...
JEE Main 2021 (Online) 26th February Morning Shift
224 mL of SO2(g) at 298 K and 1 atm is passed through 100 mL of 0.1 M NaOH solution. The non-volatile solute produced is dissolved in 36g of water. Th...
JEE Main 2021 (Online) 25th February Evening Shift
If a compound AB dissociates to the extent of 75% in an aqueous solution, the molality of the solution which shows a 2.5 K rise in the boiling point o...
JEE Main 2021 (Online) 25th February Morning Shift
1 molal aqueous solution of an electrolyte A2B3 is 60% ionised. The boiling point of the solution at 1 atm is _________ K. (Rounded off to the nearest...
JEE Main 2021 (Online) 24th February Evening Shift
C6H6 freezes at 5.5$$^\circ$$C. The temperature at which a solution of 10g of C4H10 in 200g of C6H6 freeze is __________ $$^\circ$$C. (The molal freez...
JEE Main 2021 (Online) 24th February Morning Shift
When 9.45 g of CICH2COOH is added to 500 mL of water, its freezing point drops by 0.5°C. The dissociation constant of CICH2COOH is x $$ \times $$ 10-3...
JEE Main 2020 (Online) 6th September Morning Slot
The elevation of boiling point of 0.10 m aqueous CrCl3.xNH3 solution is two times that of 0.05 m aqueous CaCl2 solution. The value of x is ______. [As...
JEE Main 2020 (Online) 4th September Evening Slot
The osmotic pressure of a solution of NaCl is 0.10 atm and that of a glucose solution is 0.20 atm. The osmotic pressure of a solution formed by mixing...
JEE Main 2020 (Online) 4th September Morning Slot
At 300 K, the vapour pressure of a solution containing 1 mole of n-hexane and 3 moles of n-heptane is 550 mm of Hg. At the same temperature, if one mo...
JEE Main 2020 (Online) 3rd September Evening Slot
If 250 cm3 of an aqueous solution containing 0.73 g of a protein A is isotonic with one litre of another aqueous solution containing 1.65 g of a prot...
JEE Main 2020 (Online) 9th January Evening Slot
A cylinder containing an ideal gas (0.1 mol of 1.0 dm3) is in thermal equilibrium with a large volume of 0.5 molal aqueous solution of ethylene glycol...
JEE Main 2020 (Online) 9th January Morning Slot
How much amount of NaCl should be added to 600 g of water ($$\rho $$ = 1.00 g/mL) to decrease the freezing point of water to – 0.2 °C ? ______. (The ...

MCQ (Single Correct Answer)

JEE Main 2024 (Online) 1st February Morning Shift
We have three aqueous solutions of $\mathrm{NaCl}$ labelled as ' $\mathrm{A}$ ', ' $\mathrm{B}$ ' and ' $\mathrm{C}$ ' with concentration $0.1 \mathrm...
JEE Main 2024 (Online) 31st January Morning Shift
Identify the mixture that shows positive deviations from Raoult's Law
JEE Main 2024 (Online) 31st January Morning Shift
Match List I with List II .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family...
JEE Main 2024 (Online) 30th January Evening Shift
The solution from the following with highest depression in freezing point/lowest freezing point is
JEE Main 2024 (Online) 30th January Morning Shift
What happens to freezing point of benzene when small quantity of napthalene is added to benzene?
JEE Main 2024 (Online) 27th January Morning Shift
A solution of two miscible liquids showing negative deviation from Raoult's law will have :
JEE Main 2023 (Online) 11th April Evening Shift
What weight of glucose must be dissolved in $$100 \mathrm{~g}$$ of water to lower the vapour pressure by $$0.20 \mathrm{~mm} ~\mathrm{Hg}$$ ? (Assume ...
JEE Main 2023 (Online) 31st January Evening Shift
Evaluate the following statements for their correctness. A. The elevation in boiling point temperature of water will be same for $0.1 \mathrm{M} \, \...
JEE Main 2023 (Online) 29th January Evening Shift
Match List I with List II .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family...
JEE Main 2023 (Online) 24th January Morning Shift
In the depression of freezing point experiment A. Vapour pressure of the solution is less than that of pure solvent B. Vapour pressure of the solution...
JEE Main 2022 (Online) 27th July Morning Shift
Boiling point of a $$2 \%$$ aqueous solution of a non-volatile solute A is equal to the boiling point of $$8 \%$$ aqueous solution of a non-volatile s...
JEE Main 2022 (Online) 25th July Evening Shift
Two solutions A and B are prepared by dissolving 1 g of non-volatile solutes X and Y, respectively in 1 kg of water. The ratio of depression in freezi...
JEE Main 2022 (Online) 25th July Morning Shift
The depression in freezing point observed for a formic acid solution of concentration $$0.5 \mathrm{~mL} \mathrm{~L}^{-1}$$ is $$0.0405^{\circ} \mathr...
JEE Main 2022 (Online) 30th June Morning Shift
For a solution of the gases A, B, C and D in water at 298 K, the values of Henry's law constant (KH) are 30.40, 2.34, 1.56 $$\times$$ 10$$-$$5 and 0.5...
JEE Main 2022 (Online) 27th June Morning Shift
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : At 10$$^\circ$$C, the densi...
JEE Main 2022 (Online) 25th June Evening Shift
Solute A associates in water. When 0.7 g of solute A is dissolved in 42.0 g of water, it depresses the freezing point by 0.2$$^\circ$$C. The percentag...
JEE Main 2021 (Online) 31st August Morning Shift
Which one of the following 0.10 M aqueous solutions will exhibit the largest freezing point depression?
JEE Main 2021 (Online) 22th July Evening Shift
Which one of the following 0.06 M aqueous solutions has lowest freezing point?
JEE Main 2020 (Online) 6th September Evening Slot
A set of solutions is prepared using 180 g of water as a solvent and 10 g of different nonvolatile solutes A, B and C. The relative lowering of vapour...
JEE Main 2020 (Online) 2nd September Evening Slot
The size of a raw mango shrinks to a much smaller size when kept in a concentrated salt solution. Which one of the following processes can explain thi...
JEE Main 2020 (Online) 8th January Morning Slot
A graph of vapour pressure and temperature for three different liquids X, Y, and Z is shown below : The following inferences are made : (A) X has hig...
JEE Main 2020 (Online) 7th January Evening Slot
Two open beakers one containing a solvent and the other containing a mixture of that solvent with a non voltatile solute are together selated in a con...
JEE Main 2020 (Online) 7th January Morning Slot
At 35oC, the vapour pressure of CS2 is 512 mm. Hg and that of acetone is 344 mm Hg. A solution of CS2 in acetone has a total vapour pressure of 600 ...
JEE Main 2019 (Online) 12th April Evening Slot
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 mol–1) in 100 mL of water at 27o...
JEE Main 2019 (Online) 10th April Evening Slot
1 g of a non-volatile non-electrolyte solute is dissolved in 100 g of two different solvents A and B whose ebullioscopic constants are in the ratio of...
JEE Main 2019 (Online) 10th April Morning Slot
At room temperature, a dilute solution of urea is prepared by dissolving 0.60 of urea in 360 g of water. If the vapour pressure of pure water at this ...
JEE Main 2019 (Online) 9th April Evening Slot
Molal depression constant for a solvent is 4.0 kg mol–1. The depression in the freezing point of the solvent for 0.03 mol kg–1 solution of K2SO4 is : ...
JEE Main 2019 (Online) 9th April Morning Slot
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 BaCl2 in water. Assuming complet...
JEE Main 2019 (Online) 9th April Morning Slot
Liquid 'M' and liquid 'N' form an ideal solution. The vapour pressures of pure liquids 'M' and 'N' are 450 and 700 mmHg, respectively, at the same tem...
JEE Main 2019 (Online) 8th April Evening Slot
For the solution of the gases w, x, y and z in water at 298K, the Henrys law constants (KH) are 0.5, 2, 35 and 40 kbar, respectively. The correct plot...
JEE Main 2019 (Online) 8th April Morning Slot
The vapour pressures of pure liquids A and B are 400 and 600 mmHg, respectively at 298 K on mixing the two liquids, the sum of their initial volume is...
JEE Main 2019 (Online) 12th January Evening Slot
Molecules of benzoic acid (C6H5COOH) dimerise in benzene. 'w' g of the acid dissolved in 30 g of benzene shows a depression in freezing point equal to...
JEE Main 2019 (Online) 12th January Morning Slot
Freezing point of a 4% aqueous solution of X is equal to freezing point of 12% aqueous solution of Y. If molecular weight of X is A, then molecular we...
JEE Main 2019 (Online) 11th January Evening Slot
K2Hgl4 is 40% ionised in aqueous solution. The value of its van't Hoff factor (i) is:
JEE Main 2019 (Online) 11th January Morning Slot
The freezing point of a diluted milk sample is found to be –0.2oC, while it should have been –0.5oC for pure milk. How much water has been added to pu...
JEE Main 2019 (Online) 10th January Evening Slot
Elevation in the boiling point for 1 molar solution of glucose is 2 K. The depression in the freezing point for 2 molal solution of glucose in the sam...
JEE Main 2019 (Online) 10th January Morning Slot
Liquids A and B form an ideal solution in the entire composition range. At 350 K, the vaapor pressures of pure A and pure B are 7 $$ \times $$ 103 Pa ...
JEE Main 2019 (Online) 9th January Evening Slot
A solution containing 62 g ethylene glycol in 250 g water is cooled to $$-$$ 10oC. If Kf for water is 1.86 K kg mol$$-$$1 , the amount of water (in g)...
JEE Main 2019 (Online) 9th January Morning Slot
Which one of the following statements regarding Henry's law is not correct ?
JEE Main 2018 (Online) 16th April Morning Slot
The mass of a non-volatile, non-electrolyte solute (molar mass = 50 g mol-1 ) needed to be dissolved in 114 g octane to reduce its vapour pressure to...
JEE Main 2018 (Offline)
For 1 molal aqueous solution of the following compounds, which one will show the highest freezing point?
JEE Main 2018 (Online) 15th April Evening Slot
Two 5 molal solutions are prepared by dissolving a non-electrolyte non-volatile solute separately in the solvents X and Y. The molecular weights of th...
JEE Main 2017 (Online) 9th April Morning Slot
A solution is prepared by mixing 8.5 g of CH2Cl2 and 11.95 g of CHCl3 . If vapour pressure of CH2Cl2 and CHCl3 at 298 K are 415 and 200 mmHg respec...
JEE Main 2017 (Online) 8th April Morning Slot
5 g of Na2SO4 was dissolved in x g of H2O. The change in freezing point was found to be 3.82oC. If Na2SO4 is 81.5% ionised, the value of x (Kf for ...
JEE Main 2017 (Offline)
The freezing point of benzene decreases by 0.450C when 0.2 g of acetic acid is added to 20g of benzene. If acetic acid associates to form a dimer in b...
JEE Main 2016 (Online) 10th April Morning Slot
An aqueous solution of a salt MX2 at certain temperature has a van’t Hoff factor of 2. The degree of dissociation for this solution of the salt is :...
JEE Main 2016 (Online) 9th April Morning Slot
The solubility of N2 in water at 300 K and 500 torr partial pressure is 0.01 g L−1. The solubility (in g L−1) at 750 torr partial pressure is :...
JEE Main 2016 (Offline)
18 g glucose (C6H12O6) is added to 178.2 g water. The vapor pressure of water (in torr) for this aqueous solution is :...
JEE Main 2015 (Offline)
The vapour pressure of acetone at 20oC is 185 torr. When 1.2 g of a non-volatile substance was dissolved in 100 g of acetone at 20oC, its vapour press...
JEE Main 2014 (Offline)
Consider separate solutions of 0.500 M C2H5OH(aq), 0.100 M Mg3(PO4)2(aq), 0.250 M KBr(aq) and 0.125 M Na3PO4(aq) at 25oC. Which statement is true abou...
AIEEE 2012
Kf for water is 1.86K kg mol–1. If your automobile radiator holds 1.0 kg of water, how many grams of ethylene glycol (C2H6O2) must you add to get the ...
AIEEE 2011
Ethylene glycol is used as an antifreeze in a cold climate. Mass of ethylene glycol which should be added to 4 kg of water to prevent it from freezing...
AIEEE 2011
The degree of dissociation ($$\alpha$$ ) of a weak electrolyte, AxBy is related to van’t Hoff factor (i) by the expression :
AIEEE 2010
If sodium sulphate is considered to be completely dissociated into cations and anions in aqueous solution, the change in freezing point of water (∆Tf)...
AIEEE 2010
On mixing, heptane and octane form an ideal solution. At 373 K, the vapour pressures of the two liquid components (heptane and octane) are 105 kPa and...
AIEEE 2009
A binary liquid solution is prepared by mixing n-heptane and ethanol. Which one of the following statements is correct regarding the behaviour of the ...
AIEEE 2009
Two liquids X and Y form an ideal solution. At 300K, vapour pressure of the solution containing 1 mol of X and 3 mol of Y is 550 mm Hg. At the same te...
AIEEE 2008
The vapour pressure of water at 20oC is 17.5 mm Hg. If 18 g of glucose (C6H12O6) is added to 178.2 g of water at 20oC, the vapour pressure of the resu...
AIEEE 2008
At 80oC, the vapour pressure of pure liquid ‘A’ is 520 mm Hg and that of pure liquid ‘B’ is 1000 mm Hg. If a mixture solution of ‘A’ and ‘B’ boils at ...
AIEEE 2007
A 5.25 % solution of a substance is isotonic with a 1.5% solution of urea (molar mass = 60 g mol−1) in the same solvent. If the densities of both the ...
AIEEE 2007
A mixture of ethyl alcohol and propyl alcohol has a vapour pressure of 290 mm at 300 K. The vapour pressure of propyl alcohol is 200 mm. If the mole f...
AIEEE 2006
Among the following mixtures, dipole-dipole as the major interaction, is present in
AIEEE 2006
18 g of glucose (C6H12O6) is added to 178.2 g of water. The vapour pressure of water for this aqueous solution at 100oC is ...
AIEEE 2005
If $$\alpha$$ is the degree of dissociation of Na2SO4, the vant Hoff’s factor (i) used for calculating the molecular mass is :
AIEEE 2005
Benzene and toluene form nearly ideal solutions. At 20 oC, the vapour pressure of benzene is 75 torr and that of toluene is 22 torr. The partial vapou...
AIEEE 2005
Equimolar solutions in the same solvent have
AIEEE 2004
Which of the following liquid pairs shows a positive deviation from Raoult’s law?
AIEEE 2004
Which one of the following statements is false?
AIEEE 2004
Which one of the following aqueous solutions will exhibit highest boiling point?
AIEEE 2004
For which of the following parameters the structural isomers C2H5OH and CH3OCH3 would be expected to have the same values? (Assume ideal behaviour) ...
AIEEE 2003
A pressure cooker reduces cooking time for food because
AIEEE 2003
In a 0.2 molal aqueous solution of a weak acid HX the degree of ionization is 0.3. Taking kf for water as 1.85, the freezing point of the solution wil...
AIEEE 2003
If liquids A and B form an ideal solution
AIEEE 2002
In a mixture of A and B, components show negative deviation when :
AIEEE 2002
Freezing point of an aqueous solution is (-0.186)oC. Elevation of boiling point of the same solution is Kb = 0.512 oC, Kf = 1.86 oC, find the increas...

MCQ (More than One Correct Answer)

JEE Main 2020 (Online) 3rd September Morning Slot
Henry’s constant (in kbar) for four gases $$\alpha $$, $$\beta $$, $$\gamma $$ and $$\delta $$ in water at 298 K is given below : .tg {border-collap...
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