R.C. Mukherjee Test: Solutions

Question 1

Select correct statement -

Accepted Answer

All are correct

Answer

b.p. of 1 molal NaCl solution is twice that of 1 molal sucrose solution

Answer

b.p. is a colligative property

Answer

b.p. elevation of 1 molal glucose solution is half of the 1 molal KCl solution

Question 2

Total vapour pressure of mixture of 1 mol volatile component A(pº_A= 100 mmHg) and 3 mol of volatile component B (pº_B= 60 mmHg) is 75 mm. For such case -

Accepted Answer

All the above statements are correct

Answer

There is positive deviation from Raoult's law

Answer

Boiling point has been lowered

Answer

Force of attraction between A and B is smaller than that between A and A or between B and B

Question 3

At a given temperature, total vapour pressure in Torr of a mixture of volatile components A and B is given by

hence, vapour pressure of pure A and B respectively (in Torr) are -

Accepted Answer

120, 45

Answer

120, 75

Answer

120, 195

Answer

75, 45

Question 4

Van't Hoff factors of aqueous solutions of X, Y, Z are 1.8, 0.8 and 2.5. Hence, their (assume equal concentrations in all three cases) then correct order is :-

Accepted Answer

Vapour pressure : Y > X > Z

Answer

F.P. : Z > X > Y

Answer

Osmotic pressure : X = Y = Z

Answer

B.P. : X < Y < Z

Question 5

Decimolar solution of potassium ferricyanide, K₃[Fe(CN)₆] has osmotic pressure of 3.94 atm at 27ºC. Hence percent ionisation of the solute is -

Accepted Answer

20%

Answer

10%

Answer

30%

Answer

40%

Question 6

An aqueous solution of urea containing 18 g urea in 1500 cm³ of solution has a density of 1.052 g/cm³. If the molecular weight of urea is 60, then the molality of solution is-

Accepted Answer

0.192

Answer

0.2

Answer

0.064

Answer

1.2

Question 7

2.56 g of sulphur in 100 g of CS₂has depression in f.p. of 0.010º, K_f= 0.1º (molal)^-1. Hence, atomicity of sulphur is -

Accepted Answer

8

Answer

2

Answer

4

Answer

6

Question 8

Consider following solutions -

I : 1 M a glucose II. : 1 M a sodium chloride

III. : 1 M benzoic acid in benzene IV. : 1 M ammonium phosphate

Select incorrect statement -

Accepted Answer

All are isotonic solutions

Answer

III is hypotonic of I, II, IV

Answer

I, II, IV are hypertonic of III

Answer

IV is hypertonic of I, II, III

Question 9

The relationship between osmotic pressure at 273 K when 10 g glucose (P₁) 10 g urea (P₂) and 10 g sucrose (P₃) are dissolved in 250 ml of water is -

Accepted Answer

P₂> P₁> P₃

Answer

P₁> P₂> P₃

Answer

P₃> P₁> P₂

Answer

P₂> P₃> P₁

Question 10

The osmotic pressure of a solution of benzoic acid dissolved in benzene is less than expected because-

Accepted Answer

Benzoic acid gets associated in benzene

Answer

Benzoic acid is an organic solute

Answer

Benzene is a non-polar solvent

Answer

Benzoic acid dissociates in benzene

Question 11

Assuming each salt to be 90% dissociated, which of the following will have highest osmotic pressure

Accepted Answer

Decimolar Al₂(SO₄)₃

Answer

Decimolar BaCl₂

Answer

Decimolar Na₂SO₄

Answer

A solution obtained by mixing equal volumes of (B) and (C) and filtering

Question 12

Which one of the following pairs of solution can we expect to be isotonic at the same temperature-

Accepted Answer

0.1 M Ca(NO₃)₂ and 0.1 M Na₂SO₄

Answer

0.1 M urea and 0.1 M NaCl

Answer

0.1 M urea and 0.2 M MgCl₂

Answer

0.1 M NaCl and 0.1M Na₂SO₄

Question 13

For a solution containing non-volatile solute, the relative lowering of vapour pressure is 0.2. If the solution contains 5 moles in all, which of the following are true ?

I. Mole fraction of solute in the solution is 0.2
II. No. of moles of solute in the solution is 0.2
III. No. of moles of solvent in the solution is 4
IV. Mole fraction of solvent is 0.2 -

Accepted Answer

I, III

Answer

I, IV

Answer

II, III

Answer

II, IV

Question 14

A complex containing K^+,Pt(IV) and Cl^-is 100% ionised giving i = 3. Thus, complex is

Accepted Answer

K₂[PtCl₆]

Answer

K₂[PtCl₄]

Answer

K₃[PtCl₅]

Answer

K[PtCl3]

Question 15

If pK_a= -log K_a= 4, and K_a= Cα²then van't Hoff factor for weak monobasic acid when C = 0.01 M is-

Accepted Answer

1.10

Answer

0.01

Answer

1.02

Answer

1.20

Question 16

pH of 1M HA (weak acid) is 2. Hence van't Hoff factor is -

Accepted Answer

1.01

Answer

1.2

Answer

1.02

Answer

1.1

Question 17

In which case van't Hoff factor is maximum

Accepted Answer

FeCl₃, 30% ionised

Answer

KCl, 50% ionised

Answer

K₂SO₄ 40% ionised

Answer

SnCl₄, 20% ionised

Question 18

If 18 gram of glucose (C₆H₁₂O₆) is present in 1000 gram of an aqueous solution of glucose it is said to be-

Accepted Answer

0.1 molal

Answer

39.2 gram

Answer

1.1 molal

Answer

0.5 molal

Question 19

What is the molarity of H₂SO₄ solution that has a density of 1.84 gm/cc at 35⁰C and contains 98% by weight-

Accepted Answer

18.4 M

Answer

4.18 M

Answer

8.14 M

Answer

18 M

Question 20

In order to prepare 100 cm³ of 0.250 M barium chloride solution the amount of BaCl₂·2H₂O required will be-

Accepted Answer

6.1 gram of BaCl₂·2H₂O

Answer

12.2 g of BaCl₂·2H₂O

Answer

2.44 g of BaCl₂·2H₂O

Answer

24.4 g of BaCl₂·2H₂O

Question 21

25 mL of 3 M HCl were added to 75 mL of 0.05 M HCl. The molarity of HCl in the resulting solution is approximately-

Accepted Answer

0.787 M

Answer

0.055 M

Answer

0.35 M&#160;

Answer

3.05 M

Question 22

0.2 mole of HCl and 0.1 mole of CaCl₂ were dissolved in water to have 500 ml of solution, the molarity of Cl^- ions is?

Accepted Answer

0.8 M

Answer

0.04 M

Answer

0.4 M

Answer

0.08 M

Question 23

When 5.0 gram of BaCl₂ is dissolved in water to have 10⁶ gram of solution. The concentration of solution is-

Accepted Answer

5 ppm

Answer

2.5 ppm

Answer

5M

Answer

5 gm L-1

Question 24

For an ideal binary liquid solution with , which relation between X_A(molefraction of A in liquid phase) and Y_A (mole fraction of A in vapour phase) is correct?

Accepted Answer

Answer

YA&#160;&#60; YB

Answer

XA&#160;&#62; XB

Answer

Question 25

Mole fraction of A vapours above the solution in mixture of A and B(X_A = 0.4) will be

[Given : = 100 mm Hg and = 200 mm Hg]

Accepted Answer

0.25

Answer

0.4

Answer

0.8

Answer

None of these

Question 26

The exact mathematical expression of Raoult's law is

Accepted Answer

Answer

Answer

Answer

Question 27

A mixture contains 1 mole of volatile liquid A (P°_A = 100 mm Hg) and 3 moles of volatile liquid B (P°_B = 80 mm Hg). If the solution behaves ideally, the total vapour pressure of the distillate is

Accepted Answer

85 mm Hg

Answer

85.88 mm Hg

Answer

90 mm Hg

Answer

92 mm Hg

Question 28

Which of the following aqueous solution will show maximum vapour pressure at 300 K?

Accepted Answer

1 M C₁₂H₂₂O₁₁

Answer

1 M NaCl

Answer

1 M CaCl₂

Answer

1 M AlCl₃

Question 29

The Van't Hoff factor for a dilute aqueous solution of glucose is

Accepted Answer

1.0

Answer

zero

Answer

1.5

Answer

2.0

Question 30

The correct relationship between the boiling points of very dilute solution of AlCl₃(T₁K) and CaCl₂(T₂K) having the same molar concentration is

Accepted Answer

T₁ > T₂

Answer

T₁ = T₂

Answer

T₂ > T₁

Answer

T₂ < T₁

Solutions - NEET Chemistry Class 12 Free MCQ Test

MCQ Practice Test & Solutions: R.C. Mukherjee Test: Solutions (30 Questions)

Select correct statement -

Total vapour pressure of mixture of 1 mol volatile component A(pº_A= 100 mmHg) and 3 mol of volatile component B (pº_B= 60 mmHg) is 75 mm. For such case -

At a given temperature, total vapour pressure in Torr of a mixture of volatile components A and B is given by

hence, vapour pressure of pure A and B respectively (in Torr) are -

Van't Hoff factors of aqueous solutions of X, Y, Z are 1.8, 0.8 and 2.5. Hence, their (assume equal concentrations in all three cases) then correct order is :-

Decimolar solution of potassium ferricyanide, K₃[Fe(CN)₆] has osmotic pressure of 3.94 atm at 27ºC. Hence percent ionisation of the solute is -

An aqueous solution of urea containing 18 g urea in 1500 cm³ of solution has a density of 1.052 g/cm³. If the molecular weight of urea is 60, then the molality of solution is-

2.56 g of sulphur in 100 g of CS₂has depression in f.p. of 0.010º, K_f= 0.1º (molal)^-1. Hence, atomicity of sulphur is -

Consider following solutions -
I : 1 M a glucose II. : 1 M a sodium chloride
III. : 1 M benzoic acid in benzene IV. : 1 M ammonium phosphate
Select incorrect statement -

The relationship between osmotic pressure at 273 K when 10 g glucose (P₁) 10 g urea (P₂) and 10 g sucrose (P₃) are dissolved in 250 ml of water is -

The osmotic pressure of a solution of benzoic acid dissolved in benzene is less than expected because-

Assuming each salt to be 90% dissociated, which of the following will have highest osmotic pressure

Which one of the following pairs of solution can we expect to be isotonic at the same temperature-

A complex containing K^+,Pt(IV) and Cl^-is 100% ionised giving i = 3. Thus, complex is

If pK_a= -log K_a= 4, and K_a= Cα²then van't Hoff factor for weak monobasic acid when C = 0.01 M is-

pH of 1M HA (weak acid) is 2. Hence van't Hoff factor is -

In which case van't Hoff factor is maximum

If 18 gram of glucose (C₆H₁₂O₆) is present in 1000 gram of an aqueous solution of glucose it is said to be-

What is the molarity of H₂SO₄ solution that has a density of 1.84 gm/cc at 35⁰C and contains 98% by weight-

In order to prepare 100 cm³ of 0.250 M barium chloride solution the amount of BaCl₂·2H₂O required will be-

25 mL of 3 M HCl were added to 75 mL of 0.05 M HCl. The molarity of HCl in the resulting solution is approximately-

0.2 mole of HCl and 0.1 mole of CaCl₂ were dissolved in water to have 500 ml of solution, the molarity of Cl^- ions is?

When 5.0 gram of BaCl₂ is dissolved in water to have 10⁶ gram of solution. The concentration of solution is-

For an ideal binary liquid solution with , which relation between X_A(molefraction of A in liquid phase) and Y_A (mole fraction of A in vapour phase) is correct?

Mole fraction of A vapours above the solution in mixture of A and B(X_A = 0.4) will be
[Given : = 100 mm Hg and = 200 mm Hg]

The exact mathematical expression of Raoult's law is

A mixture contains 1 mole of volatile liquid A (P°_A = 100 mm Hg) and 3 moles of volatile liquid B (P°_B = 80 mm Hg). If the solution behaves ideally, the total vapour pressure of the distillate is

Which of the following aqueous solution will show maximum vapour pressure at 300 K?

The Van't Hoff factor for a dilute aqueous solution of glucose is

The correct relationship between the boiling points of very dilute solution of AlCl₃(T₁K) and CaCl₂(T₂K) having the same molar concentration is

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Solutions - NEET Chemistry Class 12 Free MCQ Test

MCQ Practice Test & Solutions: R.C. Mukherjee Test: Solutions (30 Questions)

Select correct statement -

Total vapour pressure of mixture of 1 mol volatile component A(pºA = 100 mmHg) and 3 mol of volatile component B (pºB = 60 mmHg) is 75 mm. For such case -

At a given temperature, total vapour pressure in Torr of a mixture of volatile components A and B is given by ​​​​​​ hence, vapour pressure of pure A and B respectively (in Torr) are -

Van't Hoff factors of aqueous solutions of X, Y, Z are 1.8, 0.8 and 2.5. Hence, their (assume equal concentrations in all three cases) then correct order is :-

Decimolar solution of potassium ferricyanide, K3[Fe(CN)6] has osmotic pressure of 3.94 atm at 27ºC. Hence percent ionisation of the solute is -

An aqueous solution of urea containing 18 g urea in 1500 cm3 of solution has a density of 1.052 g/cm3. If the molecular weight of urea is 60, then the molality of solution is-

2.56 g of sulphur in 100 g of CS2 has depression in f.p. of 0.010º, Kf = 0.1º (molal)-1. Hence, atomicity of sulphur is -

Consider following solutions -I : 1 M a glucose II. : 1 M a sodium chlorideIII. : 1 M benzoic acid in benzene IV. : 1 M ammonium phosphateSelect incorrect statement -

The relationship between osmotic pressure at 273 K when 10 g glucose (P1) 10 g urea (P2) and 10 g sucrose (P3) are dissolved in 250 ml of water is -

The osmotic pressure of a solution of benzoic acid dissolved in benzene is less than expected because-

Assuming each salt to be 90% dissociated, which of the following will have highest osmotic pressure

Which one of the following pairs of solution can we expect to be isotonic at the same temperature-

A complex containing K+, Pt (IV) and Cl- is 100% ionised giving i = 3. Thus, complex is

If pKa = -log Ka = 4, and Ka = Cα2 then van't Hoff factor for weak monobasic acid when C = 0.01 M is-

pH of 1M HA (weak acid) is 2. Hence van't Hoff factor is -

In which case van't Hoff factor is maximum

If 18 gram of glucose (C6H12O6) is present in 1000 gram of an aqueous solution of glucose it is said to be-

What is the molarity of H2SO4 solution that has a density of 1.84 gm/cc at 350C and contains 98% by weight-

In order to prepare 100 cm3 of 0.250 M barium chloride solution the amount of BaCl2·2H2O required will be-

25 mL of 3 M HCl were added to 75 mL of 0.05 M HCl. The molarity of HCl in the resulting solution is approximately-

0.2 mole of HCl and 0.1 mole of CaCl2 were dissolved in water to have 500 ml of solution, the molarity of Cl- ions is?

When 5.0 gram of BaCl2 is dissolved in water to have 106 gram of solution. The concentration of solution is-

For an ideal binary liquid solution with , which relation between XA(molefraction of A in liquid phase) and YA (mole fraction of A in vapour phase) is correct?

Mole fraction of A vapours above the solution in mixture of A and B(XA = 0.4) will be[Given : = 100 mm Hg and = 200 mm Hg]

The exact mathematical expression of Raoult's law is

A mixture contains 1 mole of volatile liquid A (P°A = 100 mm Hg) and 3 moles of volatile liquid B (P°B = 80 mm Hg). If the solution behaves ideally, the total vapour pressure of the distillate is

Which of the following aqueous solution will show maximum vapour pressure at 300 K?

The Van't Hoff factor for a dilute aqueous solution of glucose is

The correct relationship between the boiling points of very dilute solution of AlCl3(T1K) and CaCl2(T2K) having the same molar concentration is

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Total vapour pressure of mixture of 1 mol volatile component A(pº_A= 100 mmHg) and 3 mol of volatile component B (pº_B= 60 mmHg) is 75 mm. For such case -

At a given temperature, total vapour pressure in Torr of a mixture of volatile components A and B is given by

hence, vapour pressure of pure A and B respectively (in Torr) are -

Decimolar solution of potassium ferricyanide, K₃[Fe(CN)₆] has osmotic pressure of 3.94 atm at 27ºC. Hence percent ionisation of the solute is -

An aqueous solution of urea containing 18 g urea in 1500 cm³ of solution has a density of 1.052 g/cm³. If the molecular weight of urea is 60, then the molality of solution is-

2.56 g of sulphur in 100 g of CS₂has depression in f.p. of 0.010º, K_f= 0.1º (molal)^-1. Hence, atomicity of sulphur is -

Consider following solutions -
I : 1 M a glucose II. : 1 M a sodium chloride
III. : 1 M benzoic acid in benzene IV. : 1 M ammonium phosphate
Select incorrect statement -

The relationship between osmotic pressure at 273 K when 10 g glucose (P₁) 10 g urea (P₂) and 10 g sucrose (P₃) are dissolved in 250 ml of water is -

A complex containing K^+,Pt(IV) and Cl^-is 100% ionised giving i = 3. Thus, complex is

If pK_a= -log K_a= 4, and K_a= Cα²then van't Hoff factor for weak monobasic acid when C = 0.01 M is-

If 18 gram of glucose (C₆H₁₂O₆) is present in 1000 gram of an aqueous solution of glucose it is said to be-

What is the molarity of H₂SO₄ solution that has a density of 1.84 gm/cc at 35⁰C and contains 98% by weight-

In order to prepare 100 cm³ of 0.250 M barium chloride solution the amount of BaCl₂·2H₂O required will be-

0.2 mole of HCl and 0.1 mole of CaCl₂ were dissolved in water to have 500 ml of solution, the molarity of Cl^- ions is?

When 5.0 gram of BaCl₂ is dissolved in water to have 10⁶ gram of solution. The concentration of solution is-

For an ideal binary liquid solution with , which relation between X_A(molefraction of A in liquid phase) and Y_A (mole fraction of A in vapour phase) is correct?

Mole fraction of A vapours above the solution in mixture of A and B(X_A = 0.4) will be
[Given : = 100 mm Hg and = 200 mm Hg]

A mixture contains 1 mole of volatile liquid A (P°_A = 100 mm Hg) and 3 moles of volatile liquid B (P°_B = 80 mm Hg). If the solution behaves ideally, the total vapour pressure of the distillate is

The correct relationship between the boiling points of very dilute solution of AlCl₃(T₁K) and CaCl₂(T₂K) having the same molar concentration is