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JEE Solutions PYQs with Solutions

493 previous year questions from Solutions (JEE Main & Advanced Chemistry) with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

493 questionsChemistry2006–2026Answers + solutions

About Solutions PYQs

Solutions has 493 previous year questions in the Quantrex Academy JEE Main & Advanced Chemistry bank. The 220 questions in this list come from JEE Main (193) and JEE Advanced (27), spanning 2006 to 2026. Each question opens on its own page with the options, the correct answer and the worked solution where available.

Questions by year (this list)

  • 2026: 28
  • 2025: 23
  • 2024: 25
  • 2023: 32
  • 2022: 22
  • 2021: 31
  • 2020: 14
  • 2019: 20
  • 2018: 5
  • 2017: 5
  • 2016: 4
  • 2015: 1

Solutions questions with solutions

1

In a solvent S , a compound B is partially dissociated into C and D as given below: B leftharpoons 2C + 2D B , C and D are non-volatile in nature. The molar mass of B is 10 times

JEE Advanced 2026 Solution View → 2

Passage: Two volatile liquids A and B form an ideal solution. Consider a 5 molal solution of B in A inside a closed container having a total vapour pressure of 100 mm Hg at 300 K.

JEE Advanced 2026 Solution View → 3

Passage: Two volatile liquids A and B form an ideal solution. Consider a 5 molal solution of B in A inside a closed container having a total vapour pressure of 100 mm Hg at 300 K.

JEE Advanced 2026 Solution View → 4

Given below are two statements: Given: Molar mass of C, H, O, Cl are 12, 1, 16 and 35.5 g mol ^ -1 , respectively. Statement I: In 30\% (w/w) solution of methanol in CCl _4 (at T

JEE Main 2026 Solution View → 5

Which of the following statements are not correct? A. For water, magnitude of K_b is more than the magnitude of K_f . B. The elevation in boiling point of water when a

JEE Main 2026 Solution View → 6

Given below are two statements : Statement I : H _2 O molecules move from the chamber 1 to chamber 2 . Statement II : The osmotic pressure of a solution prepared by dissolving 50

JEE Main 2026 Solution View → 7

When 0.25 moles of a non-volatile, non-ionizable solute was dissolved in 1 mole of a solvent the vapor pressure of solution was x\% of vapor pressure of pure solvent. What is x\% ?

JEE Main 2026 Solution View → 8

20 g hemoglobin in a 1 L aqueous solution (A) at 300 K is separated from pure water by semi permeable membrane. At equilibrium the height of solution in a tube dipped in a

JEE Main 2026 Solution View → 9

What is the mole fraction of water in 10 % by weight (w/w) of aqueous urea solution? [Given: Molar mass of H, O, C and N are 1 , 16 , 12 and 14 g mol ^ -1 respectively.]

JEE Main 2026 Solution View → 10

At 27° C, 0.1 M, 1 L K_4[Fe(CN)_6] aqueous solution and 0.1 M, 1 L FeCl_3 aqueous solution are placed in a container separated by a semi permeable membrane AB. Assume complete

JEE Main 2026 Solution View → 11

A non-volatile, non-electrolyte solid solute when dissolved in 40 g of a solvent, the vapour pressure of the solvent decreased from 760 mm Hg to 750 mm Hg. If the same solution

JEE Main 2026 Solution View → 12

Solution A is prepared by dissolving 1 g of a protein (molar mass = 50000 g mol ^ -1 ) in 0.5 L of water at 300 K. Its osmotic pressure is x bar. Solution B is made by dissolving

JEE Main 2026 Solution View → 13

19.5 g of fluoro acetic acid (molar mass = 78 g mol ^ -1 ) is dissolved in 500 g of water at 298 K. The depression in the freezing point of water was 1° C. What is K_a of fluoro

JEE Main 2026 Solution View → 14

Given below are two statements : Statement (I) : 1,2,3-Trihydroxypropane can be separated from water by simple distillation. Statement (II) : An azeotropic mixture cannot be

JEE Main 2026 Solution View → 15

Consider the following aqueous solutions. I. 2.2 g Glucose in 125 mL of solution. II. 1.9 g Calcium chloride in 250 mL of solution. III. 9.0 g Urea in 500 mL of solution. IV. 20.5

JEE Main 2026 Solution View → 16

At T(K), 2 moles of liquid A and 3 moles of liquid B are mixed. The vapour pressure of ideal solution formed is 320 mm Hg. At this stage, one mole of A and one mole of B are added

JEE Main 2026 Solution View → 17

At 298 K, the mole percentage of N_ 2 (~g) in air is 80 \% . Water is in equilibrium with air at a pressure of 10 atm. What is the mole fraction of N_ 2 (~g) in water at 298 K ? (

JEE Main 2026 Solution View → 18

Two liquids A and B form an ideal solution at temperature T K. At T K, the vapour pressures of pure A and B are 55 and 15 kN m^ -2 respectively. What is the mole fraction of A in

JEE Main 2026 Solution View → 19

A solution is prepared by dissolving 0.3 g of a non-volatile non-electrolyte solute 'A' of molar mass 60 ~g ~mol^ -1 and 0.9 g of a non-volatile non-electrolyte solute ' B ' of

JEE Main 2026 Solution View → 20

' W ' g of a non-volatile electrolyte solid solute of molar mass ' M ' g mol^ -1 when dissolved in 100 mL water, decreases vapour pressure of water from 640 mm Hg to 600 mm Hg. If

JEE Main 2026 Solution View → 21

Two liquids A and B form an ideal solution. At 320 K, the vapour pressure of the solution, containing 3 mol of A and 1 mol of B is 500 mm Hg. At the same temperature, if 1 mol of

JEE Main 2026 Solution View → 22

Which one of the following graphs accurately represents the plot of partial pressure of CS_ 2 vs its mole fraction in a mixture of acetone and CS_ 2 at constant temperature?

JEE Main 2026 Solution View → 23

At T(K), 100 ~g of 98 \% H_ 2 SO_ 4 (w / w) aqueous solution is mixed with 100 g of 49 \% H_ 2 SO_ 4 (w / w) aqueous solution. What is the mole fraction of H_ 2 SO_ 4 in the

JEE Main 2026 Solution View → 24

Consider a solution of CO_ 2 (~g) dissolved in water in a closed container. Which one of the following plots correctly represents variation of log (partial pressure of CO_ 2 in

JEE Main 2026 Solution View → 25

Given below are two statements: Statement I : The Henry's law constant K_ H is constant with respect to variations in solution's concentration over the range for which the

JEE Main 2026 Solution View → 26

A substance ' X ' (1.5 g) dissolved in 150 g of a solvent ' Y ' (molar mass =300 ~g ~mol^ -1 ) led to an elevation of the boiling point by 0.5 K. The relative lowering in the

JEE Main 2026 Solution View → 27

The osmotic pressure of a living cell is 12 atm at 300 K. The strength of sodium chloride solution that is isotonic with the living cell at this temperature is \_\_\_\_ g L^ -1 .

JEE Main 2026 Solution View → 28

Elements P and Q form two types of non-volatile, non-ionizable compounds PQ and PQ_ 2 . When 1 g of PQ is dissolved in 50 g of solvent ^ A^ , Δ T_ b was 1.176 K while when 1 g of

JEE Main 2026 Solution View → 29

At 300 K , an ideal dilute solution of a macromolecule exerts osmotic pressure that is expressed in terms of the height ( h ) of the solution (density =1.00 ~g ~cm^ -3 ) where h

JEE Advanced 2025 Solution View → 30

Which of the following binary mixture does not show the behaviour of minimum boiling azeotropes?

JEE Main 2025 Solution View → 31

Liquid A and B form an ideal solution. The vapour pressure of pure liquids A and B are 350 and 750 mm Hg respectively at the same temperature. If x_ A and x_B are the mole

JEE Main 2025 Solution View → 32

Match List-I with List-II List-I List-II (A) Solution of chloroform and acetone (I) Minimum boiling azeotrope (B) Solution of ethanol and water (II) Dimerizes (C) Solution of

JEE Main 2025 Solution View → 33

The percentage dissociation of a salt (MX_3) solution at given temperature (van't Hoff factor i= 2) is ______ % (Nearest integer)

JEE Main 2025 Solution View → 34

Sea water, which can be considered as a 6 molar (6 M) solution of NaCl , has a density of 2 ~g ~mL^ -1 . The concentration of dissolved oxygen (O_2) in sea water is 5.8 ppm. Then

JEE Main 2025 Solution View → 35

Given below are two statements : Statement (I) : Molal depression constant K_ f is given by M_1 R T_f Δ S_ f u s , where symbols have their usual meaning. Statement (II) : K_ f

JEE Main 2025 Solution View → 36

X Y is the membrane / partition between two chambers 1 and 2 containing sugar solutions of concentration c_1 and c_2(c_1 c_2) mol L^ -1 . For the reverse osmosis to take place

JEE Main 2025 Solution View → 37

2 moles each of ethylene glycol and glucose are dissolved in 500 g of water. The boiling point of the resulting solution is : (Given : Ebullioscopic constant of water .=0.52 ~K

JEE Main 2025 Solution View → 38

When 1 g each of compounds AB and AB_2 are dissolved in 15 g of water separately, they increased the boiling point of water by 2.7 K and 1.5 K respectively. The atomic mass of A

JEE Main 2025 Solution View → 39

' x ' g of NaCl is added to water in a beaker with a lid. The temperature of the system is raised from 1^ ∘ C to 25^ ∘ C . Which out of the following plots, is best suited for the

JEE Main 2025 Solution View → 40

A solution is made by mixing one mole of volatile liquid \(A\) with 3 moles of volatile liquid \(B\). The vapour pressure of pure A is 200 mm Hg and that of the solution is 500 mm

JEE Main 2025 Solution View → 41

Which of the following graph correctly represents the plots of \(K_ H \) at 1 bar gases in water versus temperature?

JEE Main 2025 Solution View → 42

Given below are two statements : Statement (I) : NaCl is added to the ice at 0^ ∘ C , present in the ice cream box to prevent the melting of ice cream. Statement (II) : On

JEE Main 2025 Solution View → 43

1.24 g of \(AX _ 2 \) (molar mass \(124 g mol^ -1 \) ) is dissolved in 1 kg of water to form a solution with boiling point of \(100.0156^ ^ ∘ C \), while \(25.4 g^ ^ ∘ \) of \( AY

JEE Main 2025 Solution View → 44

If \(A_2 B\) is \(30 \%\) ionised in an aqueous solution, then the value of van't Hoff factor (i) is ______ \(× 10^ -1 \).

JEE Main 2025 Solution View → 45

Assume a living cell with 0.9 \%(ω / ω) of glucose solution (aqueous). This cell is immersed in another solution having equal mole fraction of glucose and water. (Consider the

JEE Main 2025 Solution View → 46

What is the freezing point depression constant of a solvent, 50 g of which contain 1 g non volatile solute (molar mass 256 ~g ~mol^ -1 ) and the decrease in freezing point is 0.40

JEE Main 2025 Solution View → 47

The observed and normal molar masses of compound MX_2 are 65.6 and 164 respectively. The percent degree of ionisation of MX_2 is …… %. (Nearest integer)

JEE Main 2025 Solution View → 48

Consider the given plots of vapour pressure (VP) vs temperature(T/K). Which amongst the following options is correct graphical representation showing Δ T_ f , depression in the

JEE Main 2025 Solution View → 49

Consider a binary solution of two volatile liquid components 1 and 2 . x_1 and y_1 are the mole fractions of component 1 in liquid and vapour phase, respectively. The slope and

JEE Main 2025 Solution View → 50

When a non-volatile solute is added to the solvent, the vapour pressure of the solvent decreases by 10 mm of Hg . The mole fraction of the solute in the solution is 0.2 . What

JEE Main 2025 Solution View → 51

Arrange the following solutions in order of their increasing boiling points. (i) 10^ -4 M~ NaCl (ii) 10^ -4 M~ Urea (iii) 10^ -3 M~ NaCl (iv) 10^ -2 M~ NaCl

JEE Main 2025 Solution View → 52

Vessel-1 contains w_2 ~g of a non-volatile solute X dissolved in w_1 ~g of water. Vessel- 2 contains w_2 ~g of another non-volatile solute Y dissolved in w_1 ~g of water. Both the

JEE Advanced 2024 Solution View → 53

The vapour pressure of pure benzene and methyl benzene at \(27^ ∘ C\) is given as 80 Torr and 24 Torr, respectively. The mole fraction of methyl benzene in vapour phase, in

JEE Main 2024 Solution View → 54

A solution is prepared by adding 1 mole ethyl alcohol in 9 mole water. The mass percent of solute in the solution is ________ (Integer answer) (Given : Molar mass in \(g mol^ -1

JEE Main 2024 Solution View → 55

Molality of an aqueous solution of urea is \(4.44 ~m\). Mole fraction of urea in solution is \(x × 10^ -3 \). Value of \(x\) is \( \) - (Integer answer)

JEE Main 2024 Solution View → 56

A solution containing \(10 g \) of an electrolyte \(AB _ 2 \) in \(100 g\) of water boils at \(100.52^ ^ ∘ C \). The degree of ionization of the electrolyte \((α)\) is _______

JEE Main 2024 Solution View → 57

When ' \(x\) ' \( × 10^ -2 ~mL \) methanol (molar mass \(=32 ~g \); density \(=0.792 ~g / cm^ 3\)) is added to \(100 ~mL \) water (density \(=1 ~g / cm^ 3\)), the following

JEE Main 2024 Solution View → 58

Given below are two statements: Statement I : Gallium is used in the manufacturing of thermometers. Statement II : A thermometer containing gallium is useful for measuring the

JEE Main 2024 Solution View → 59

Consider the dissociation of the weak acid \( HX as given below \( HX(aq) leftharpoons H^ + (aq)+X^ - (aq), Ka= 1.2 × 10^ -5 \) \( [K_ a . : dissociation constant \(]\) The

JEE Main 2024 Solution View → 60

Considering acetic acid dissociates in water, its dissociation constant is \(6.25 × 10^ -5 \). If \(5 mL\) of acetic acid is dissolved in 1 litre water, the solution will freeze

JEE Main 2024 Solution View → 61

An artificial cell is made by encapsulating \(0.2 M \) glucose solution within a semipermeable membrane. The osmotic pressure developed when the artificial cell is placed within a

JEE Main 2024 Solution View → 62

\(2.7 ~kg \) of each of water and acetic acid are mixed. The freezing point of the solution will be \(-x^ ^ ∘ C \). Consider the acetic acid does not dimerise in water, nor

JEE Main 2024 Solution View → 63

The Molarity \(( M) \) of an aqueous solution containing \(5.85 ~g \) of NaCl in \(500 ~mL \) water is : (Given : Molar Mass \( Na : 23\) and \( Cl : 35.5 gmol^ -1 \) )

JEE Main 2024 Solution View → 64

\(2.5 ~g of a non-volatile, non-electrolyte is dissolved in \(100 ~g of water at \(25^ ^ ∘ C. The solution showed a boiling point elevation by \(2^ ^ ∘ C. Assuming the solute

JEE Main 2024 Solution View → 65

Mass of ethylene glycol (antifreeze) to be added to 18 . 6kg of water to protect the freezing point at - 24 ° C is kg (Molar mass in gmol ^ - 1 for ethylene glycol 62, K _ f of

JEE Main 2024 Solution View → 66

We have three aqueous solutions of NaCl labelled as ‘ A ’ , ‘ B ’ and ‘ C ’ with concentration 0 . 1M, 0 . 01M and 0 . 001M, respectively. The value of van t ’ Haft factor (i) for

JEE Main 2024 Solution View → 67

Identify the mixture that shows positive deviations from Raoult's Law

JEE Main 2024 Solution View → 68

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 and n _ C , mole fraction of C in the solution is:

JEE Main 2024 Solution View → 69

The solution from the following with highest depression in freezing point/lowest freezing point is

JEE Main 2024 Solution View → 70

What happens to freezing point of benzene when small quantity of napthalene is added to benzene?

JEE Main 2024 Solution View → 71

The mass of sodium acetate ( CH _ 3 COONa) required to prepare 250mL of 0 . 35M aqueous solution is _____ g. () Molar mass of CH _ 3 COONa is 82 . 02g mol ^ - 1 ) Round off to the

JEE Main 2024 Solution View → 72

Molality of 0 . 8M H _ 2 SO _ 4 solution (density 1 . 06g cm ^ - 3 ) is _______ × 10 ^ - 3 m . Round off your answer to the nearest integer.

JEE Main 2024 Solution View → 73

A solution of H _ 2 SO _ 4 is 31 . 4 % H _ 2 SO _ 4 by mass and has a density of 1 . 25g / mL . The molarity of the H _ 2 SO _ 4 solution is M (nearest integer) [Given molar mass

JEE Main 2024 Solution View → 74

The osmotic pressure of a dilute solution is 7 × 10 ^ 5 Pa at 273K . Osmotic pressure of the same solution at 283K is _______ × 10 ^ 4 Nm ^ - 2 .(Nearest integer)

JEE Main 2024 Solution View → 75

The quantity which changes with temperature is:

JEE Main 2024 Solution View → 76

A solution of two miscible liquids showing negative deviation from Raoult's law will have :

JEE Main 2024 Solution View → 77

50mL of 0 . 2 molal urea solution (density = 1 . 012g mL ^ - 1 at 300K ) is mixed with 250mL of a solution containing 0 . 06g of urea. Both the solutions were prepared in the same

JEE Advanced 2023 Solution View → 78

The vapour pressure of 30 % (w / v) , aqueous solution of glucose is ________ mmHg at 25 ^ ∘ C . [Given: The density of 30 % (w / v) , aqueous solution of glucose is 1 . 2g cm ^ –

JEE Main 2023 Solution View → 79

Sea water contains 29 . 25 % NaCl and 19 % MgCl _ 2 by weight of solution. The normal boiling point of the sea water is C ∘ (Nearest integer) Assume 100 % ionization for both NaCl

JEE Main 2023 Solution View → 80

Solution of 12g of non-electrolyte (A) prepared by dissolving it in 1000mL of water exerts the same osmotic pressure as that of 0 . 05M glucose solution at the same temperature.

JEE Main 2023 Solution View → 81

80 mole percent of MgCl _ 2 is dissociated in aqueous solution. The vapour pressure of 1 . 0 molal aqueous solution of MgCl _ 2 at 38 ^ o C is _____ mmHg . (Nearest integer)

JEE Main 2023 Solution View → 82

What weight of glucose must be dissolved in 100g of water to lower the vapour pressure by 0 . 20mmHg ? (Assume dilute solution is being formed) Given: Vapour pressure of pure

JEE Main 2023 Solution View → 83

0 . 004M K _ 2 SO _ 4 solution is isotonic with 0 . 01M glucose solution. Percentage dissociation of K _ 2 SO _ 4 is _____ (Nearest integer)

JEE Main 2023 Solution View → 84

An aqueous solution of volume 300 cm ^ 3 contains 0 . 63g of protein. The osmotic pressure of the solution at 300K is 1 . 29mbar . The molar mass of the protein is gmol ^ - 1 .

JEE Main 2023 Solution View → 85

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 _____ % higher than the

JEE Main 2023 Solution View → 86

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 ratio 1: 2 , then the boiling

JEE Main 2023 Solution View → 87

The vapour pressure vs. temperature curve for a solution solvent system is shown below. The boiling point of the solvent is _____°C.

JEE Main 2023 Solution View → 88

Consider the following pairs of solution which will be isotonic at the same temperature. The number of pairs of solutions is/ are _____ A. 1Maq . NaCl and 2Maq . urea B. 1Maq .

JEE Main 2023 Solution View → 89

Mass of Urea ( NH _ 2 CONH _ 2 ) required to be dissolved in 1000g of water in order to reduce the vapour pressure of water by 25 % is _______g . (Nearest integer) Given : Molar

JEE Main 2023 Solution View → 90

20 % of acetic acid is dissociated when its 5g is added to 500mL of water. The depression in freezing point of such water is _____ × 10 ^ - 3 C ∘ . Atomic mass of C, H and O are

JEE Main 2023 Solution View → 91

25mL of an aqueous solution of KCl was found to require 20mL of 1M AgNO _ 3 solution when titrated using K _ 2 CrO _ 4 as an indicator. What is the depression in freezing point of

JEE Main 2023 Solution View → 92

Evaluate the following statements for their correctness. A. The elevation in boiling point temperature of water will be same for 0 . 1M NaCl and 0 . 1M urea. B. Azeotropic mixture

JEE Main 2023 Solution View → 93

The total pressure of a mixture of non-reacting gases X ( 0 . 6g ) and Y ( 0 . 45g ) in a vessel is 740mm of Hg . The partial pressure of the gas X is mm of Hg . (Nearest Integer)

JEE Main 2023 Solution View → 94

At 27 ° C , a solution containing 2 . 5g of solute in 250 . 0mL of solution exerts an osmotic pressure of 400Pa . The molar mass of the solute is g mol ^ - 1 (Nearest integer)

JEE Main 2023 Solution View → 95

Lead storage battery contains 38 % by weight solution of H _ 2 SO _ 4 . The van't Hoff factor is 2 . 67 at this concentration. The temperature in Kelvin at which the solution

JEE Main 2023 Solution View → 96

A 300mL bottle of soft drink has 0 . 2 MCO _ 2 dissolved in it. Assuming CO _ 2 behaves as an ideal gas, the volume of the dissolved CO _ 2 at STP is _____ mL . (Nearest integer)

JEE Main 2023 Solution View → 97

A solution containing 2g of a non-volatile solute in 20g of water boils at 373 . 52K . The molecular mass of the solute is _____ gmol ^ - 1 . (Nearest integer) Given, water boils

JEE Main 2023 Solution View → 98

Some amount of dichloromethane ( CH _ 2 Cl _ 2 ) is added to 671 . 141mL of chloroform ( CHCl _ 3 ) to prepare 2 . 6 × 10 ^ - 3 M solution of CH _ 2 Cl _ 2 (DCM). The

JEE Main 2023 Solution View → 99

Match List I with List II. List I List II A. van't Hoff factor, i I. Cryoscopic constant B. k _ f II. Isotonic solutions C. Solutions with same osmotic pressure III. Normal

JEE Main 2023 Solution View → 100

Solid Lead nitrate is dissolved in 1 litre of water. The solution was found to boil at 100 . 15 ° C . When 0 . 2mol of NaCl is added to the resulting solution, it was observed

JEE Main 2023 Solution View → 101

What is the mass ratio of ethylene glycol ( C _ 2 H _ 6 O _ 2 , molar mass = 62g / mol ) required for making 500g of 0 . 25 molal aqueous solution and 250mL of 0 . 25 molar

JEE Main 2023 Solution View → 102

The number of pairs of the solution having the same value of the osmotic pressure from the following is (Assume 100 % ionization) A. 0 . 500M C _ 2 H _ 5 OH ( aq ) and 0 . 25MKBr

JEE Main 2023 Solution View → 103

The osmotic pressure of solutions of PVC in cyclohexanone at 300K are plotted on the graph. The molar mass of PVC is g mol ^ - 1 (Nearest integer) (Given : R = 0 . 083Latm K ^ - 1

JEE Main 2023 Solution View → 104

The Total pressure observed by mixing two liquid AandB is 350mmHg when their mole fractions are 0 . 7and0 . 3 respectively. The Total pressure becomes 410mmHg if the mole

JEE Main 2023 Solution View → 105

The number of units, which are used to express concentration of solutions from the following is _________. (Mass percent, Mole, Mole fraction, Molarity, ppm, Molality.)

JEE Main 2023 Solution View → 106

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 is more than that of pure

JEE Main 2023 Solution View → 107

When Fe _ 0 . 93 O is heated in presence of oxygen, it converts to Fe _ 2 O _ 3 . The number of correct statement/s from the following is ______ . A. The equivalent weight of Fe _

JEE Main 2023 Solution View → 108

5gofNaOH was dissolved in deionized water to prepare a 450mL stock solution. What volume (in mL) of this solution would be required to prepare 500mL of 0 . 1M solution ? Given

JEE Main 2023 Solution View → 109

An aqueous solution is prepared by dissolving 0 . 1 mole of an ionic salt in 1 . 8kg of water at 35 ° C . The salt remains 90 % dissociated in the solution. The vapour pressure of

JEE Advanced 2022 Solution View → 110

' x ' g of molecular oxygen ( O _ 2 ) is mixed with 200g of neon (Ne) . The total pressure of the nonreactive mixture of O _ 2 and Ne in the cylinder is 25 bar. The

JEE Main 2022 Solution View → 111

1 . 80g of solute A was dissolved in 62 . 5 cm ^ 3 of ethanol and freezing point of the solution was found to be 155 . 1K . The molar mass of solute A is gmol ^ - 1 . [Given

JEE Main 2022 Solution View → 112

If O _ 2 gas is bubbled through water at 303K , the number of millimoles of O _ 2 gas that dissolve in 1 litre of water is____(Nearest integer) (Given : Henry's Law constant

JEE Main 2022 Solution View → 113

A gaseous mixture of two substances A and B , under a total pressure of 0 . 8atm is in equilibrium with an ideal liquid solution. The mole fraction of substance A is 0 . 5 in the

JEE Main 2022 Solution View → 114

150g of acetic acid was contaminated with 10 . 2g ascorbic acid ( C _ 6 H _ 8 O _ 6 ) to lower down its freezing point by (x × 10 ^ - 1 ) ° C . The value of x is____ (Nearest

JEE Main 2022 Solution View → 115

When a certain amount of solid A is dissolved in 100g of water at 25 ° C to make a dilute solution, the vapour pressure of the solution is reduced to one-half of that of pure

JEE Main 2022 Solution View → 116

Boiling point of a 2 % aqueous solution of a nonvolatile solute A is equal to the boiling point of 8 % aqueous solution of a non-volatile solute B . The relation between molecular

JEE Main 2022 Solution View → 117

The elevation in boiling point for 1 molal solution of non-volatile solute A is 3K . The depression in freezing point for 2 molal solution of A in the same solvent is 6K . The

JEE Main 2022 Solution View → 118

Two solutions A and B are prepared by dissolving 1g of non-volatile solutes X and Y . respectively in 1kg of water. The ratio of depression in freezing points for A and B is found

JEE Main 2022 Solution View → 119

The depression in freezing point observed for a formic acid solution of concentration 0 . 5mL L ^ - 1 is 0 . 0405 ° C . Density of formic acid is 1 . 05g mL ^ - 1 . The Van't

JEE Main 2022 Solution View → 120

Elevation in boiling point for 1 . 5 molal solution of glucose in water is 4K . The depression in freezing point for 4 . 5 molal solution of glucose in water is 4K . The ratio of

JEE Main 2022 Solution View →
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