If 'A' contains 2 % NaCl and is separated by a semi permeable membrane from 'B', which contains 10 % NaCl, then the event that will occur is

1. NaCl will flow from 'A' to 'B'

2. NaCl will flow from 'B' to 'A'

3. Water will flow from 'A' to 'B'

4. Water will flow from 'B' to 'A'

Subtopic:  Osmosis & Osmotic Pressure |
 66%
From NCERT
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The vapour pressure of water depends upon:

(1) surface area of container

(2) volume of container

(3) Temperature

(4) All of these

Subtopic:  Relative Lowering of Vapour Pressure |
 52%
From NCERT
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The boiling point of an azeotropic mixture of water and ethanol is less than that of water and ethanol. The mixture shows

(1) No deviation from Raoult's law

(2) Positive deviation from Raoult's law

(3) Negative deviation from Raoult's law

(4) That the solution is unsaturated

Subtopic:  Azeotrope |
 76%
From NCERT
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A 5.85% solution of NaCl has osmotic pressure close to-

1. 5.85% solution of urea

2. 2M solution of glucose

3. 1M solution of urea

4. 5.8% solution of glucose

Subtopic:  Osmosis & Osmotic Pressure |
 56%
From NCERT
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The mole(s) of K2SO4 to be dissolved in 12 moles of water to lower its vapor pressure by 10 mm of Hg at a temperature at which vapor pressure of pure water is 50 mm of Hg is :

1. 3 mol 2. 0.5 mol
3. 1 mol 4. 2 mol
Subtopic:  Relative Lowering of Vapour Pressure |
From NCERT
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The salt that possesses the highest freezing point

1. 0.01 M NaCl

2. 0.05 M Urea

3. 0.01 M MgCl2

4. 0.02 M NaCl

Subtopic:  Depression of Freezing Point |
From NCERT
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Aluminium phosphate is 100 % ionized in 0.01 m aqueous solution. Hence, Tb/kb is-

1. 0.01 m 2. 0.015 m
3. 0.0175 m 4. 0.02 m
Subtopic:  Elevation of Boiling Point |
 60%
From NCERT
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Which solution has highest freezing point?

1. 1% glucose solution

2. 1% urea solution

3. 1% sucrose solution

4. All have same freezing

Subtopic:  Depression of Freezing Point |
From NCERT
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Osmotic pressure of 40% (w/V) urea solution is 1.64 atm. and that of 3.42% (w/V) cane sugar solution is 2.46 atm. When equal volumes of the above two solutions are mixed, the osmotic pressure of the resulting solution will be?  

(1) 1.64 atm

(2) 2.46 atm

(3) 4.10 atm

(4) 2.05 atm 

Subtopic:  Osmosis & Osmotic Pressure |
From NCERT
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20g of naphthoic acid (C11H8O2) dissolved in 50g of benzene (Kf=1.72 K Kg mol-1) shows a depression in freezing point of 2K. The Vant Hoff factor is?

1. 0.5

2. 0.1

3. 2

4. 3

Subtopic:  Van’t Hoff Factor |
 76%
From NCERT
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