jee_main_2026_21_jan_evening - Solutions Topics

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QUESTION #72 Osmotic Pressure and Isotonic Solutions
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. (Nearest integer) Given: R = 0.08 L atm K⁻¹ mol⁻¹ Assume complete dissociation of NaCl (Given: Molar mass of Na and Cl are 23 and 35.5 g mol⁻¹ respectively.)
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QUESTION #73 Elevation in Boiling Point and Vapour Pressure Lowering
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 vapour pressure of the solvent 'Y' is ____ × 10⁻². (Nearest integer) [Given: Kb of the solvent = 5.0 K kg mol⁻¹] Assume the solution to be dilute and no association or dissociation of X takes place in solution.
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Rankbit System
JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%) | JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%)

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