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Which of the following statements is false ?
  • a)
    Units of atmospheric pressure and osmotic
    pressure are the same
  • b)
    In reverse osmosis, solvent molecules move
    through semipermeable membrane from a
    region of lower concentration of solute to a
    region of higher concentration
  • c)
    The value of molal depression constant
    depends on nature of solvent
  • d)
    Relative lowering of vapour pressure, is a
    dimensionless quantity
Correct answer is option 'D'. Can you explain this answer?
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Which of the following statements is false ?a)Units of atmospheric pre...
Explanation:

Units of atmospheric pressure and osmotic pressure are the same
- This statement is true. The units of both atmospheric pressure and osmotic pressure are the same, which is in pascals (Pa) or atmospheres (atm).

In reverse osmosis, solvent molecules move through semipermeable membrane from a region of lower concentration of solute to a region of higher concentration
- This statement is false. In reverse osmosis, solvent molecules move through a semipermeable membrane from a region of higher concentration of solute to a region of lower concentration of solute. This process requires external pressure to be applied to the solution with higher solute concentration to overcome the osmotic pressure and force the solvent molecules to move through the membrane.

The value of molal depression constant depends on the nature of the solvent
- This statement is true. The molal depression constant, also known as the cryoscopic constant or freezing point depression constant, is a property of the solvent and depends on its molecular structure and interactions with solute particles. It is a measure of how much the freezing point of a solvent is lowered by the presence of a solute.

Relative lowering of vapour pressure is a dimensionless quantity
- This statement is also true. The relative lowering of vapour pressure is the ratio of the difference in vapour pressure of the pure solvent and the solution to the vapour pressure of the pure solvent. It is a dimensionless quantity as it is a ratio of two pressure values with the same units.

Therefore, the false statement is option D, and the correct explanation for each statement is as follows:

- Units of atmospheric pressure and osmotic pressure are the same
- In reverse osmosis, solvent molecules move through semipermeable membrane from a region of lower concentration of solute to a region of higher concentration
- The value of molal depression constant depends on the nature of the solvent
- Relative lowering of vapour pressure is a dimensionless quantity.
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Which of the following statements is false ?a)Units of atmospheric pressure and osmoticpressure are the sameb)In reverse osmosis, solvent molecules movethrough semipermeable membrane from aregion of lower concentration of solute to aregion of higher concentrationc)The value of molal depression constantdepends on nature of solventd)Relative lowering of vapour pressure, is adimensionless quantityCorrect answer is option 'D'. Can you explain this answer?
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Which of the following statements is false ?a)Units of atmospheric pressure and osmoticpressure are the sameb)In reverse osmosis, solvent molecules movethrough semipermeable membrane from aregion of lower concentration of solute to aregion of higher concentrationc)The value of molal depression constantdepends on nature of solventd)Relative lowering of vapour pressure, is adimensionless quantityCorrect answer is option 'D'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Which of the following statements is false ?a)Units of atmospheric pressure and osmoticpressure are the sameb)In reverse osmosis, solvent molecules movethrough semipermeable membrane from aregion of lower concentration of solute to aregion of higher concentrationc)The value of molal depression constantdepends on nature of solventd)Relative lowering of vapour pressure, is adimensionless quantityCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements is false ?a)Units of atmospheric pressure and osmoticpressure are the sameb)In reverse osmosis, solvent molecules movethrough semipermeable membrane from aregion of lower concentration of solute to aregion of higher concentrationc)The value of molal depression constantdepends on nature of solventd)Relative lowering of vapour pressure, is adimensionless quantityCorrect answer is option 'D'. Can you explain this answer?.
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