19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
25 mg of CaCO₃ is dissolved in 5 L of solution. The approximate concentration of solution is
A semipermeable membrane
In three beakers labelled as (A), (B) and (C), 100 mL of water, 100 mL of 1M solution of glucose in water and 100 mL of 0.5 M solution of glucose in water are taken respectively and kept at same temperature. Which of …
The vapour pressure of pure CHC₁₃ and CH₂C₁₂ are 200 and 41.5 atm respectively. The weight of CHC₁₃ and CH₂C₁₂ are respectively 11.9 g and 17 g. The vapour pressure of solution will be (AllMS 2019)
For an ideal solution, the correct option is: (2019) (a) mixV at constant T and P (b) mixH at constant T and P (c) mixG at constant T and P (d) mixS at constant T and P Ans. (b) Sol. For ideal solution, mix mix mix mi…
If boiling point of water is 1000C. How much gram of NaCl is added in 500 g of water to increase its boiling point by approx o b H O 1 C K 0.52K kg / mole. x (AllMS 2019)
Vapour pressure of a pure liquid X is 2 atm at 300 K. It is lowered to 1 atm on dissolving 1g of Y in 20g of liquid X. If molar mass of X is 200, what is the molar mass of Y?
The mixture that forms maximum boiling azeotrope is: (NEET 2019)
During freezing of a solution the following are in equilibrium
The unit of ebullioscopic constant is (UK PMT 2014) (a) Kkgmol (b) molkgK (c) Kgmol K (d) KmolKg
To observe an elevation in boiling point of 0.050C, the amount of a solute (molecular weight = 100) to be added to 100 g of water (Kb =0.5) is (WB JEE 2014)
Dissolution of 1.5 g of a non-volatile solute (molecular weight = 60) in 250 g of a solvent reduces its freezing point by 0.01 °C. Find the molal depression constant of the solvent. (MHT CET 2014)
Which one is not equal to zero for an ideal solution? (CBSE AIPMT 2015) (a) mix H (b) mix S (c) mix V (d) observed calculated byRaoult 'slaw p p p Ans. (b) Sol. (i) there will be no change in volume on mixing the two …
What happens to freezing point of benzene when naphthalene is added?
(iii) mix S for an ideal solution.
An azeotropic solution of two liquids has boiling point lower than either of them when it
The mixture which shows positive deviation from Raoult’s law is: (NEET 2020)
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)
Which one is a colligative property?
The vapour pressure of benzene at a certain temp. is 640 mm Hg . A non-volatile-non-electrolyte solid weighing 2.175g is added to 39.0 g of benzene. The vapour pressure of the solution is 600 mm Hg. What is the molecu…
The relative lowering of the vapour pressure is equal to the ratio between the numbers of
An ideal solution is formed when its constituents
The relative lowering of vapour pressure is equal to the ratio between the number of (BVP 2010)
The empirical formula of a non-electrolyte is CH₂O. A solution containing 3 g of the compound exerts the same osmotic pressure as that of 0.05 M glucose solution. The molecular formula of the compound is (KCET 2011)
Which of the following graphs represent the behavior of ideal binary liquid mixture?