The incorrect statement among the following is:

1. Units of atmospheric pressure and osmotic pressure are the same.
2. In reverse osmosis, solvent molecules move through a semipermeable membrane from a region of lower concentration of solute to a region of higher concentration.
3. The value of molal depression constant depends on nature of solvent.
4. Relative lowering of vapour pressure, is a dimensionless quantity.

Subtopic:  Relative Lowering of Vapour Pressure | Elevation of Boiling Point | Depression of Freezing Point | Osmosis & Osmotic Pressure |
 66%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

Two beakers of capacity 500 mL were taken. One of these beakers, labelled as “A”, was filled with 400 mL water whereas the beaker labelled “B“ was filled with 400 mL of 2M solution of NaCl. At the same temperature, both the beakers were placed in closed containers of the same material and the same capacity as shown in the figure.

At a given temperature, which of the following statements is correct about the vapour pressure of pure water and that of NaCl solution?

1. Vapour pressure in container (A) is more than that in container (B)
2. Vapour pressure in container (A)is less than that in container (B)
3. Vapour pressure is equal in both containers
4. The vapour pressure in container (B) is twice the vapour pressure in container(A)

Subtopic:  Relative Lowering of Vapour Pressure |
 73%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh