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  • 1(current)
Q. No.

A solution that has the highest boiling point among the following is -

1. 1.0 M NaOH

2. 1.0 M Na2SO4 

3. 1.0 M NH4NO3

4. 1.0 M KNO3

Subtopic:  Elevation of Boiling Point |
 82%
From NCERT
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The unit of Ebullioscopic constant is:

1. K kg mol-1 or K (molality)-1

2. mol kg K-1 or K-1 (molality)

3. kg mol-1 K-1 or K-1 (molality)-1

4. K mol kg-1 or K (molality)

Subtopic:  Elevation of Boiling Point |
 78%
From NCERT
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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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Match the laws given in Column I with expressions given in Column II.

Column I Column II
A. Raoult’s law 1. π = CRT
B. Osmotic pressure  2. ΔTf=Kfm
C. Elevation of boiling point 3. p=x1p10 +x2p20
D. Depression in freezing point 4. ΔTb=Kbm

Codes

A B C D
1. 2 3 4 1
2. 1 2 3 4
3. 1 4 3 2
4. 3 1 4 2
Subtopic:  Elevation of Boiling Point | Depression of Freezing Point |
 93%
From NCERT
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Select the correct option based on statements below:

Assertion (A): When methyl alcohol is added to water, boiling point of water increases.
Reason (R): When a volatile solute is added to a volatile solvent, elevation in boiling point is observed.
 
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. Both (A) and (R) are False.
Subtopic:  Elevation of Boiling Point | Raoult's Law |
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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