Aluminium phosphate is 100% ionized in 0.01m aqueous solution. Hence, $∆{\mathrm{T}}_{\mathrm{b}}/{\mathrm{k}}_{\mathrm{b}}$ is

1. 0.01

2. 0.015

3. 0.0175

4. 0.02

Concept Questions :-

Elevation of Boiling Point
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

Which solution has highest freezing point?

1. 1% glucose solution

2. 1% urea solution

3. 1% sucrose solution

4. All have same freezing

Concept Questions :-

Depression of Freezing Point
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

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

Concept Questions :-

Osmosis and Osmotic Pressure
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

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

Concept Questions :-

Van’t Hoff Factor
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

A 0.0002 molar solution of NaCl having degree of dissociation of 90% at 270C, has osmotic pressure equal to:-

1. 0.94 bar

2. 9.4 bar

3. 0.094 bar

4. 9.4 x 10-4 bar

Concept Questions :-

Osmosis and Osmotic Pressure
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

The density of NH4OH solution is found to be 0.6 g/ml. It contains 35% by mass of NH4OH. The normality of the solution is

(1) 4.8 N

(2) 10 N

(3) 0.5 N

(4) 6 N

Concept Questions :-

Concentration Term and Numericals
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

The relative lowering of vapour caused by dissolving 71.3g of a substance in 1000g of water is 7.13x10-3. The molecular mass of substance is:-

1. 180

2. 18

3. 1.8

4. 360

Concept Questions :-

Relative Lowering of Vapour Pressure/ Vapour Pressure
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

Total vapour pressure of mixture of 1 mol A(p0A = 150 torr) and 2 mol B(P0B = 240 torr) is 200 torr. In this case:-

1. there is positive deviation from Raoult's law

2. there is negative deviation from Raoult's law

3. there is no deviation from Raoult's law

4. none of these

Concept Questions :-

Introduction/ Colligative properties
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

Which of the following aqueous solution should have the highest osmotic pressure?
(1) 0.011 M AICI
at 50°C
(2) 0.03 M NaCI at 25°C
(3) 0.012 M (NH
4)2SOat 25°C
(4) 0.03 M NaCI at 50°C

Concept Questions :-

Osmosis and Osmotic Pressure
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

50 g of antifreeze (ethylene glycol) is added to 200g water. What amount of ice will separate out at
-9.3°C. (Kf = 1.86 K Kg mol-1) :-

(1) 42 mg

(2) 42 g

(3) 38.71 g

(4) 38.71 mg

Concept Questions :-

Depression of Freezing Point