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MCQ (Single Correct Answer)

NEET 2023 Manipur
Which amongst the following aqueous solution of electrolytes will have minimum elevation in boiling point? Choose the correct option :-
NEET 2022 Phase 2
KH value for some gases at the same temperature 'T' are given : .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-st...
NEET 2021
The following solutions were prepared by dissolving 10 g of glucose (C6H12O6) in 250 ml of water (P1), 10 g of urea (CH4N2O) in 250 ml of water (P2) a...
NEET 2021
The correct option for the value of vapour pressure of a solution at 45$$^\circ$$C with benzene to octane in molar ratio 3 : 2 is :[At 45$$^\circ$$C v...
NEET 2020 Phase 1
The freezing point depression constant (Kr) of benzene is 5. 12 K kg mol-1. The freezing point depression for the solution of molality 0.078 m contain...
NEET 2020 Phase 1
The mixture which shows positive deviation from Raoult's law is :
NEET 2019
For an ideal solution, the correct option is :
NEET 2019
The mixture that forms maximum boiling azeotrope is :
NEET 2017
If molality of the dilute solution is doubled, the value of molal depression constant (Kf) will be
NEET 2016 Phase 2
Which one of the following is incorrect for ideal solution?
NEET 2016 Phase 2
The van't Hoff factor (i) for a dilute aqueous solution of the strong electrolyte barium hydroxide is
NEET 2016 Phase 1
At 100oC the vapour pressure of a solution of 6.5 g of a solute in 100 g water is 732 mm. If Kb = 0.52, the boiling point of this solution will be ...
NEET 2016 Phase 1
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...
AIPMT 2015 Cancelled Paper
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 of the following statements ...
AIPMT 2015 Cancelled Paper
Which of them is not equal to zero for an ideal solution?
AIPMT 2015 Cancelled Paper
Which one of the following electrolytes has the same value of van't Hoff factor (i) as that of Al2(SO4)3 (if all are 100% ionised)? ...
AIPMT 2014
Of the following 0.10 m aqueous solutions, which one will exhibit the largest freezing point depression?
NEET 2013 (Karnataka)
Which condition is not satisfied by an ideal solution?
AIPMT 2012 Mains
Vapour pressure of chloroform (CHCl3) and dichloromethane (CH2Cl2) at 25oC are 200 mm Hg and 41.5 mm Hg respectively. Vapour pressure of the solution ...
AIPMT 2012 Prelims
pA and pB are the vapour pressure of pure liquid components, A and B, respectively of an ideal binary solution. If xA represents the mole fraction of ...
AIPMT 2011 Mains
A 0.1 molal aqueous solution of a weak acid is 30% ionized. If Kf for water is 1.86oC/m, the freezing point of the solution will be ...
AIPMT 2011 Mains
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 $$ \times $$ 10$$-$...
AIPMT 2011 Prelims
The freezing point depression constant for water is $$-$$1.86o C m$$-$$1. If 5.00 g Na2SO4 is dissolved in 45.0 g H2O, the freezing point is changed b...
AIPMT 2011 Prelims
The van't Hoff factor $$i$$ for a compound which undergoes dissociation in one solvent and association in other solvent is respectively
AIPMT 2010 Prelims
A solution of sucrose (molar mass = 342 g mol$$-$$) has been prepared by dissolving 68.5 g of sucrose in 1000 g of water. The freezing point of the so...
AIPMT 2010 Prelims
An aqueous solution is 1.00 molal in KI. Which change will cause the vapour pressure of the solution to increase?
AIPMT 2009
A 0.0020 m aqueous solution of an ionic compound [Co(NH3)5(NO2)]Cl freezes at $$-$$ 0.00732oC. Number of moles of ions which 1 mol of ionic compound ...
AIPMT 2007
0.5 molal aqueous solution of a weak acid (HX) is 20% ionised. If Kf for water is 1.86 K kg mol$$-$$1, the lowering in freezing point of the solution ...
AIPMT 2006
During osmosis, flow of water through a semipermeable membrane is
AIPMT 2006
A solution of acetone in ethanol
AIPMT 2006
1.00 g of a non-electrolyte solute (molar mass 250 g mol$$-$$1) was dissolved in 51.2 g of benzene. If the freezing point depression constant, Kf of b...
AIPMT 2006
A solution containing 10 g per dm3 of urea (molecular mass = 60 g mol$$-$$1) is isotonic with a 5% solution of a nonvolatile solute is ...
AIPMT 2005
The vapour pressure of two liquids P and Q are 80 and 60 torr, respectively. The total vapour pressure of solution obtained by mixing 3 mole of P and ...
AIPMT 2005
A solution has a 1 : 4 mole ratio of pentane to hexane. The vapour pressures of the pure hydrocarbons at 20oC are 440 mm Hg for pentane and 120 mm Hg ...
AIPMT 2005
A solution of urea (mol. mass 56 g mol$$-$$1) boils at 100.18oC at the atmospheric pressure. If Kf and Kb for water are 1.86 and 0.512 K kg mol$$-$$1 ...
AIPMT 2002
A solution containing components A and B folloes Raoult's law
AIPMT 2002
A solution contains non volatile solute of molecular mass M2. Which of the following can be used to calculate the molecular mass of solute in terms of...
AIPMT 2001
Pure water can be obtained from sea water by
AIPMT 2000
From the colligative properties of solution, which one is the best method for the determination of molecular weight of proteins and polymers?
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