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Solutions — NEET UG Chemistry PYQs

560 previous year questions from Solutions with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

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1

What is boiling point of solution containing 7.45 g of KCl in 500 g of water, assuming 80 % dissociation of KCl ? (molar mass of KCl = 74.5 g/mole , k_b for water = 0.52 K/molal )

MHT CET Medical 2026 Solution View → 2

Identify from the following pair of solutions on mixing exhibits positive deviation from Raoult's law.

MHT CET Medical 2026 Solution View → 3

A solution containing 1.2 g nonvolatile solute in 100 g. of a solvent has a boiling point elevation 1.2 K. Calculate the molar mass of solute if molal elevation constant of solvent

MHT CET Medical 2026 Solution View → 4

The osmotic pressure of barium chloride and glucose solution of the same concentration at the same temperature are respectively 0.62 atm and 0.24 atm. Calculate the van't Hoff fact

MHT CET Medical 2026 Solution View → 5

Which of the following aqueous solutions exhibits maximum freezing point depression assuming complete dissociation?

MHT CET Medical 2026 Solution View → 6

A solution contains 50 g of common salt in 500 gm of water. Find the concentration of the solution in terms of percentage.

MHT CET Medical 2026 Solution View → 7

What should be the molarity of aqueous solution of K ₂ SO ₄ so that it is isotonic with aqueous 1 M glucose at same temperature, assuming complete dissociation?

MHT CET Medical 2026 Solution View → 8

Which of the following solutions has maximum vapour pressure?

MHT CET Medical 2026 Solution View → 9

Calculate relative lowering of vapor pressure of 1 molal glucose solution in water at room temperature. (molar mass of water =18 )

MHT CET Medical 2026 Solution View → 10

Which of the following statements is NOT true about 0.05 M urea solution & 0.1 M glucose solution?

MHT CET Medical 2026 Solution View → 11

200 mL of an aqueous solution of a protein contain 1.26 g of protein, the osmotic pressure of this solution at 300 K is found to be 2.57 10⁻³ bar, Calculate the molar mass of prote

MHT CET Medical 2026 Solution View → 12

If a solution is prepared by dissolving solute in 0.3 L of water having osmotic pressure 164.1 atm at 300 K, what will be the number of moles of solute in solution? (R = 0.08205 L

MHT CET Medical 2026 Solution View → 13

For a solution containing a non-volatile solute in a volatile solvent, which of the following relationships is correctly represented?

MHT CET Medical 2026 Solution View → 14

The molal elevation constant for water is 0.52^ C kg mol ⁻¹ . Find out the boiling point of solution when 6.0 g of urea is dissolved in 200 g of water. (molar mass of urea = 60 g/m

MHT CET Medical 2026 Solution View → 15

An aqueous solution of acetic acid has a molality of 0.1 m. If the percent dissociation of acetic acid in water is 1.35 % , calculate the depression in freezing point of the soluti

MHT CET Medical 2026 Solution View → 16

Which of the following statements is NOT true about the ideal solution?

MHT CET Medical 2026 Solution View → 17

What is the osmotic pressure of 0.25 M urea solution at 27^ C ( R = 0.0821 L atm mol ⁻¹ K ⁻¹ )?

MHT CET Medical 2026 Solution View → 18

Find the freezing point of a solution containing 27 g urea in 1 dm ^3 of the aqueous solution. [ K_f = 1.8 K kg mol ⁻¹ and molar mass of urea = 60 g mol ⁻¹ ]

MHT CET Medical 2026 Solution View → 19

Find the osmotic pressure of 10 % (w/v) solution of sucrose at 27^ C . (Molar mass of sucrose = 342 g/mol)

MHT CET Medical 2026 Solution View → 20

The maximum amount of a solid solute that can be dissolved in a specified amount of a given liquid solvent does NOT depend upon

MHT CET Medical 2026 Solution View → 21

Identify the correct statements for ideal solution. (A) It obeys Raoult's law over the entire range of concentration. (B) It shows a positive deviation from Raoult's law. (C) In an

MHT CET Medical 2026 Solution View → 22

What is the molality of an aqueous solution containing 6 % glucose by mass ? ( Molar mass of glucose = 180 g/mol )

MHT CET Medical 2026 Solution View → 23

0.636 g of acetic acid (molar mass = 60 g/mol) is dissolved in 1 kg of water, the solution freezes at -0.0205^ C. Calculate van't Hoff factor of acetic acid ( K _f water = 1.86 K-k

MHT CET Medical 2026 Solution View → 24

Calculate the pressure at which solubility of a certain gas in water is 0.165 mol L ⁻¹ at 25 ^ C. (Henry's law constant for this gas in water is 0.034 mol L ⁻¹ bar ⁻¹ at 25 ^ C.)

MHT CET Medical 2026 Solution View → 25

Which of the following laws describes the relationship between solubility of gas in a liquid and the pressure of the gas over the solution at a given temperature?

MHT CET Medical 2026 Solution View → 26

What is the molal elevation constant of solvent ?

MHT CET Medical 2026 Solution View → 27

An isotonic solution of glucose with urea contains 18 g in 1 dm ^3 . Calculate the mass of urea in 500 mL solution. [Molar mass of urea = 60 g mol ⁻¹ . Molar mass of glucose = 180

MHT CET Medical 2026 Solution View → 28

Identify the state of solute and solvent respectively in amalgams of mercury with metals.

MHT CET Medical 2026 Solution View → 29

13 g nonvolatile solute dissolved in 100 gm of water gives vapour pressure of 27.371 mm Hg at room temperature. Find the molar mass of solute. (vapour pressure of water is 28.065 m

MHT CET Medical 2026 Solution View → 30

0.5 molal aqueous solution of a weak acid (HX) is 20 % ionized. If K_f for water is 1.86 K kg mol ⁻¹ Calculate the lowering in freezing point of the solution.

MHT CET Medical 2026 Solution View → 31

If 1.02% of glycerin is isotonic with a 2% solution of glucose, calculate the molar mass of glycerin if that of glucose is 180g./mol

MHT CET Medical 2026 Solution View → 32

Consider the following statements about the solutions formed by mixing two liquids. A. An ideal solution thus formed obeys Raoult's law throughout the composition range. B. Mixture

NEET 2026 Solution View → 33

Mixture of chloroform and acetone forms a solution with negative deviation from Raoult's law due to :

NEET 2026 Solution View → 34

Identify the correct statements : A. The molality of 2.5 g of ethanoic acid (Molar mass : 60 g mol ⁻¹ ) in 75 g of benzene solution is 0.556 m. B. The molarity of a solution contai

NEET 2026 Solution View → 35

Assertion A : For an ideal solution formed by mixing liquids P and Q , _ mix H=0 and _ mix V=0 Reason R : No interactions occur between P and Q . In the light of the above statemen

NEET 2026 Solution View → 36

Match List - I with List-II array llll & array l List-I (Example) array & & array l List-II (Type of Solution) array A. & Humidity & I. & Solid in solid B. & Alloys & II. & Liquid

NEET 2025 Solution View → 37

5 moles of liquid X and 10 moles of liquid Y make a solution having a vapour pressure of 70 torr. The vapour pressures of pure X and Y are 63 torr and 78 torr respectively. Which o

NEET 2025 Solution View → 38

Which of the following aqueous solution will exhibit highest boiling point?

NEET 2025 Solution View → 39

The amount of glucose required to prepare 250 mL of M 20 aquepus solution is : (Molar mass of glucose : 180 ~g ~mol ⁻¹ )

NEET 2024 Solution View → 40

Mass of glucose ( C ₆ H ₁₂ O ₆ ) required to be dissolved to prepare one litre of its solution which is isotonic with 15 ~g ~L ⁻¹ solution of urea ( NH ₃ CONH ₂ ) is (Given: Molar

NEET 2024 Solution View → 41

The Henry's law constant ( K _H ) values of three gases ( A , B , C ) in water are 145,2 10⁻⁵ and 35 kbar , respectively. The solubility of these gases in water follow the order:

NEET 2024 Solution View → 42

The plot of osmotic pressure ( ) vs concentration ( mol L ⁻¹ ) for a solution gives a straight line with slope 25.73 L ^ bar mol-1 . The temperature at which the osmotic pressure m

NEET 2024 Solution View → 43

Which amongst the following aqueous solutions of electrolytes will have minimum elevation in boiling point? Choose the correct option.

NEET 2023 Solution View → 44

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R: Assertion A: Helium is used to dilute oxygen in diving apparatus. Reasons R: H

NEET 2023 Solution View → 45

K _ H value for some gases at the same temperature ' T ' are given: array c|c gas & K _ H / k bar Ar & 40.3 CO ₂ & 1.67 HCHO & 1.83 10⁻⁵ CH ₄ & 0.413 array where K _ H is Henry's L

NEET 2022 Solution View → 46

In one molal solution that contains 0 . 5 mole of a solute, there is

NEET 2022 Solution View → 47

The following solutions were prepared by dissolving 10   g of glucose C 6 H 12 O 6 in 250   mL of water P 1 , 10   g of urea CH 4 N 2 O in 250   mL of water P 2

NEET 2021 Solution View → 48

The correct option for the value of vapour pressure of a solution at 45 º C with benzene to octane in molar ratio 3   :   2 is: [At 45 ° C vapour pressure of be

NEET 2021 Solution View → 49

If 8   g of a non-electrolyte solute is dissolved in 114   g of n - octane to reduce its vapour pressure to 80 % , the molar mass (in g   mol - 1 ) of the solute is

NEET 2020 Solution View → 50

Isotonic solutions have same

NEET 2020 Solution View → 51

The mixture which shows positive deviation from Raoult’s law is

NEET 2020 Solution View → 52

The freezing point depression constant K f of benzene is 5.12   K   kg   mol – 1 . The freezing point depression for the solution of molality 0.078   m co

NEET 2020 Solution View → 53

Assertion: Vapour pressure of solvent A increases when a more volatile solvent B is added. Reason : B is more volatile therefore vapour pressure of B is greater than that of A .

AIIMS 2019 Solution View → 54

The vapour pressure of pure CHCl ₃ and CH ₂ Cl ₂ are 200 and 41.5 atm respectively. The weight of CHCl ₃ and CH ₂ Cl ₂ are 11.9 ~g and 17 ~g respectively in a solution. The vapour

AIIMS 2019 Solution View → 55

Calculate molarity of one litre solution of 22.2 gm CaCl ₂ .

JIPMER 2019 Solution View → 56

Which mixture is immiscible?

JIPMER 2019 Solution View → 57

Which of the following statements is correct regarding a solution of two compounds A and B exhibiting positive deviation from ideal behaviour?

NEET 2019 Solution View → 58

In water saturated air the mole fraction of water vapour is 0.02 . If the total pressure of the saturated air is 1.2 ~atm , the partial pressure of dry air is

NEET 2019 Solution View → 59

The density of 2 M aqueous solution of NaOH is 1.28 ~g / cm ^3 . The molality of the solution is [Given that molecular mass of . NaOH =40 ~g ~mol ⁻¹ ]

NEET 2019 Solution View → 60

The mixture that forms maximum boiling azeotrope is

NEET 2019 Solution View → 61

For an ideal solution, the correct option is:

NEET 2019 Solution View → 62

When 45 ~g of solute is dissolved in 600 ~g water, freezing point gets lowered by 2.2 ~K , calculate molar mass of solute. (K_f=1.86 ~K ~kg ~mol ⁻¹ )

AIIMS 2018 Solution View → 63

Assertion : The vapour pressure of a liquid decreases if some non volatile solute is dissolved in it. Reason : The relative lowering of vapour pressure of a solution containing a n

AIIMS 2018 Solution View → 64

1 ~g of polymer having molar mass 1,60,000 ~g is dissolved in 800 ~mL water. Calculate the osmotic pressure in pascal at 27^ C . (R=8.314 ~J ~K ⁻¹ ~mole ⁻¹ )

AIIMS 2018 Solution View → 65

Ethylene glycol is used as antifreeze to reduce freezing point of water to -2.4^ C . What mass of antifreeze is required for 2 ~L water? (K_f . water .=1.86 ~K ~kg / mole )

AIIMS 2018 Solution View → 66

If osmotic pressure of 4 %( w / v ) solution of sucrose is same as 2 %( w / v ) solution of ' X ', then the molecular mass of X( ~g / mol ) is

JIPMER 2018 Solution View → 67

Which one of the following electrolytes has the same value of van't Hoff factor (i) as that of K ₄ [ Fe ( CN )₆ ] ?

JIPMER 2018 Solution View → 68

The van't Hoff factor for 0.1 M Ba ( NO ₃ )₂ solution is 2.74 . The degree of dissociation is

JIPMER 2018 Solution View → 69

The depression in freezing point of 0.1 M aqueous solutions of HCl , CuSO ₄ and K ₂ SO ₄ are in the ratio

AIIMS 2017 Solution View → 70

Assertion : Azeotropic mixtures are formed only by non-ideal solutions and they may have boiling points either greater than both the components or lesser than both the components.

AIIMS 2017 Solution View → 71

Consider the following solutions, A=0.1 M glucose, B=0.05 M NaCl , C=0.05 M BaCl ₂ , D=0.1 M AlCl ₃ Which of the following pairs is isotonic?

JIPMER 2017 Solution View → 72

Which of the following aqueous solution should have highest boiling point?

JIPMER 2017 Solution View → 73

Which of the following is dependent on temperature?

NEET 2017 Solution View → 74

If molality of the dilute solution is doubled, the value of molal depression constant K f will be

NEET 2017 Solution View → 75

Assertion : Acetone and aniline shows negative deviations. Reason : H-bonding between acetone and aniline is stronger than that between acetoneacetone and aniline-aniline.

AIIMS 2016 Solution View → 76

The freezing point of a solution containing 0.2 ~g of acetic acid in 20.0 ~g benzene is lowered by 0.45^ C . The degree of association of acetic acid in benzene is (Assume acetic a

AIIMS 2016 Solution View → 77

Two elements A and B form compounds of formula A B₂ and A B₄ . When dissolved in 20.0 ~g of benzene 1.0 ~g of A B₂ lowers f. pt. by 2.3^ C whereas 1.0 ~g of A B₄ lowers f . pt. by

AIIMS 2016 Solution View → 78

The pair of boiling point and compound are given as, Which will show lowest vapour pressure at room temperature?

JIPMER 2016 Solution View → 79

The van't Hoff factor i for a dilute aqueous solution of the strong electrolyte barium hydroxide is

NEET 2016 Solution View → 80

Which one of the following is incorrect for ideal solution?

NEET 2016 Solution View → 81

At 100 o C the vapour pressure of a solution of 6.5 g of a non-volatile solute in 100 g water is 732 mm. If K b = 0.52 , the boiling point of this solution will be:

NEET 2016 Solution View → 82

Which of the following statements about the composition of the vapour over an ideal 1 : 1 molar mixture of benzene and toluene is correct? Assume that the temperature is constant a

NEET 2016 Solution View → 83

The relationship between osmotic pressure at 273 ~K when 10 ~g glucose (P₁ ), 10 ~g urea (P₂ ) and 10 ~g sucrose (P₃ ) are dissolved in 250 ~mL of water is

AIIMS 2015 Solution View → 84

For an ideal binary liquid solution with p_x^0 p_y^0 in which relation between X_x (mole fraction of X in liquid phase) and Y_X (mole fraction of X in vapour phase) is correct, X_y

JIPMER 2015 Solution View → 85

For preparing 3.00 L of 1 M NaOH by mixing portions of two stock solutions ( A and B ) of 2.50 M NaOH and 0.40 M NaOH respectively. Find out the amount of B stock solution (in L )

JIPMER 2015 Solution View → 86

The molal freezing point depression constant for benzene ( C ₆ H ₆ ) is 4.90 ~K ~kg mol ⁻¹ . Selenium exists as a polymer of the type Se _x . When 3.26 g of selenium is dissolved i

JIPMER 2015 Solution View → 87

In order to prepare one litre 1 N solution of KMnO ₄ , how many grams of KMnO ₄ are required, if the solution to be used in acid medium for oxidation?

JIPMER 2015 Solution View → 88

Which one is not equal to zero for an ideal solution?

NEET 2015 Solution View → 89

Which one of the following electrolytes has the same value of van's Hoff's factor (i) as that of A l 2 S O 4 3 (if all are 100 % ionized)?

NEET 2015 Solution View → 90

The boiling point of 0.2   m o l   k g - 1 solution of X in water is greater than equimolal solution of Y in water. Which one of the following statements is true in this

NEET 2015 Solution View → 91

The value of Henry's constant K_H is

AIIMS 2014 Solution View → 92

Assertion: An ideal solution obeys Raoult's law. Reason: In an ideal solution, solute-solute as well as solvent-solvent interactions are similar to solute-solvent interactions.

AIIMS 2014 Solution View → 93

A solution with negative deviation among the following is

JIPMER 2014 Solution View → 94

Of the following 0.10 m aqueous solutions, which one will exhibit the largest freezing point depression?

NEET 2014 Solution View → 95

Which of the following is true for an ideal solution?

AIIMS 2013 Solution View → 96

Boiling point of benzene is 353.23 ~K . When 1.8 ~g of non-volatile solute is dissolved in 90 ~g of benzene. Then boiling point is raised to 354.11 ~K . Given K_b (benzene) =2.53 ~

AIIMS 2013 Solution View → 97

The osmotic pressure of blood is 8.21 atm at 37^ C . How much glucose would be used for an injection that is at the same osmotic pressure as blood?

JIPMER 2013 Solution View → 98

How many grams of concentrated nitric acid solution should be used to prepare 250 ~mL of 2.0 M HNO ₃ ? The concentrated acid is 70 % HNO ₃ .

NEET 2013 Solution View → 99

An excess of AgNO ₃ is added to 100 ~mL of a 0.01 M solution of dichlorotetraaquachromium (III) chloride. The number of moles of AgCl precipitate would be

NEET 2013 Solution View → 100

6.02 10²⁰ molecules of urea are present in 100 ~mL of its solution. The concentration of solution is

NEET 2013 Solution View → 101

Which condition is not satisfied by an ideal solution?

NEET 2013 Solution View → 102

Maximum deviation from ideal gas is expected from

NEET 2013 Solution View → 103

Assertion : The solubility of a gas in a liquid increases with increase of pressure. Reason : The solubility of a gas in a liquid is directly proportional to the pressure of the ga

AIIMS 2012 Solution View → 104

Which of the following would exert maximum osmotic pressure?

JIPMER 2012 Solution View → 105

p_A and p_B are the vapour pressure of pure liquid components, A and B , respectively of an ideal binary solution. If x_A represents the mole fraction of component A , the total pr

NEET 2012 Solution View → 106

Vapour pressure of chloroform ( CHCl ₃ ) and dichloromethane ( CH ₂ Cl ₂ ) at 25^ C are 200 ~mm Hg and 415 ~mm Hg respectively. Vapour pressure of the solution obtained by mixing 2

NEET 2012 Solution View → 107

Which of the following compounds can be used as antifreeze in automobile radiators?

NEET 2012 Solution View → 108

Assertion : A non volatile solute is mixed in a solution then elevation in boiling point and depression in freezing point both are 2 ~K . Reason : Elevation in boiling point and de

AIIMS 2011 Solution View → 109

A solution made by dissolving 40 g NaOH in 1000 g of H ₂ O is

JIPMER 2011 Solution View → 110

The freezing point depression constant for water is -1.86^ C m ⁻¹ . If 5.00 ~g Na SO ₄ is dissolved in 45.0 ~g H ₂ O , the freezing point is changed by -3.82^ C . Calculate the van

NEET 2011 Solution View → 111

The van't Hoff factor, i for a compound which undergoes dissociation in one solvent and association in other solvent is respectively.

NEET 2011 Solution View → 112

A 0.1 molal aqueous solution of a weak acid is 30 % ionised. If K_f for water is 1.86^ C / m , the freezing point of the solution will be

NEET 2011 Solution View → 113

200 ~mL of an aqueous solution of a protein contains its 1.26 ~g . The osmotic pressure of this solution at 300 ~K is found to be 2.57 10⁻³ bar. The molar mass of protein will be

NEET 2011 Solution View → 114

The vapour pressure of 100 g water reduces from 3000 Nm ⁻² to 2985 Nm ⁻² when 5 g of substance ' X ' is dissolved in it. Substance ' X ' is

JIPMER 2010 Solution View → 115

A solution of sucrose (molar mass =342 ~g ~mol ⁻¹ ) has been prepared by dissolving 68.5 ~g of sucrose in 1000 ~g of water. The freezing point of the solution obtained will be ( k

NEET 2010 Solution View → 116

An aqueous solution is 1.00 molal in KI. Which change will cause the vapour pressure of the solution to increase ?

NEET 2010 Solution View → 117

25.3 ~g of sodium carbonate, Na ₂ CO ₃ is dissolved in enough water to make 250 ~mL of solution. If sodium carbonate dissociates completely, molar concentration of sodium ion, Na ⁺

NEET 2010 Solution View → 118

For a dilute solution, Raoult's law states that

AIIMS 2009 Solution View → 119

A 0.1 molal solution of an acid is 4.5 % ionized. Calculate freezing point. (molecular weight of the acid is 300 ) . K_f=1.86 ~K ~mol ⁻¹ ~kg .

AIIMS 2009 Solution View → 120

A mixture of two miscible liquids A and B is distilled under equilibrium conditions at 1 ~atm pressure. The mole fraction of A in solution and vapour phase are 0.30 and 0.60 respec

AIIMS 2009 Solution View →
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