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JEE Main 2024 (Online) 29th January Morning ShiftNumericalEasy📈 Topic in 19% papers+4
Ques. 1JEE Main 2024, 29 January (Morning Shift)

The osmotic pressure of a dilute solution is 7 105 Pa at 273 K. Osmotic pressure of the same solution at 283 K is 104 Nm-2.

Answer

73

Solution

= CRT, C same ⇒ T

2 = 1 T2T1 = 7 105 283273

= 7.256 105 Pa = 72.56 104 Nm-2 73 104 Nm-2

Answer: 73

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Ques. 2JEE Main 2024, 29 January (Evening Shift)

Molality of 0.8 M H2SO4 solution (density 1.06 g cm-3) is 10-3 m.

Ques. 3JEE Main 2024, 27 January (Morning Shift)

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

  1. increased vapour pressure, increased boiling point
  2. increased vapour pressure, decreased boiling point
  3. decreased vapour pressure, decreased boiling point
  4. decreased vapour pressure, increased boiling point
Ques. 4JEE Main 2024, 27 January (Evening Shift)

The quantity which changes with temperature is :

  1. Molality
  2. Molarity
  3. Mole fraction
  4. Mass percentage

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