Solutions Test -19

Question 1

1 / -0

Match the items given in Column I and Column II.

Column I	Column II
(i) Saturated solution	(a) Solution having same osmotic pressure at a given temperature as that of given solution.
(ii) Binary solution	(b) A solution whose osmotic pressure is less than that of another.
(iii) Isotonic solution	(c) Solution with two components.
(iv) Hypotonic solution	(d) A solution which contains maximum amount of solute that can be dissolved in a given amount of solvent at a given temperature.
(v) Solid solution	(e) A solution whose osmotic pressure is more than that of another.
vi) Hypertonic solution	(f) A solution in solid phase.

(i)- (d) (ii)- (c) (iii)- (a) (iv)- (b) (v)- (f) (vi)- (e)

(i)- (a) (ii)- (d) (iii)- (b) (iv)- (c) (v)- (e) (vi)- (f)

(i)- (e) (ii)- (f) (iii)- (b) (iv)- (a) (v)- (c) (vi)- (d)

(i)- (a) (ii)- (b) (iii)- (c) (iv)- (d) (v)- (e) (vi)- (f)

Question 2
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Which of the following statements is false?

A
Two different solutions of sucrose of same molality prepared in different solvents will have the same depression in freezing point.

B
The osmotic pressure of a solution is given by the equation Π = CRT ( where C is the molarity of the solution).

C
Decreasing order of osmotic pressure for 0.01 M aqueous solutions of barium chloride, potassium chloride, acetic acid and sucrose is BaCl₂> KCl > CH₃COOH > sucrose.

D
According to Raoult’s law, the vapour pressure exerted by a volatile component of a solution is directly proportional to its mole fraction in the solution.

Question 3
1 / -0

The values of Van’t Hoff factors for KCl, NaCl and K₂SO₄ , respectively, are

A
2, 2 and 2

B
2, 2 and 3

C
1, 1 and 2

D
1, 1 and 1

Question 4
1 / -0

Which of the following statements is false?

A
Units of atmospheric pressure and osmotic pressure are the same.

B
In reverse osmosis, solvent molecules move through a semipermeable membrane from a region of lower concentration of solute to a region of higher concentration.

C
The value of molal depression constant depends on nature of solvent.

D
Relative lowering of vapour pressure, is a dimensionless quantity.

Question 5
1 / -0

Assertion : When methyl alcohol is added to water, boiling point of water increases.

Reason : When a volatile solute is adde to a volatile solvent elevation in boiling point is observed.

A
Assertion and reason both are correct statements and reason is correct explanation for assertion.

B
Assertion and reason both are correct statements but reason is not correct explanation for assertion.

C
Assertion is correct statement but reason is wrong statement

D
Assertion and reason both are incorrect statements.

Question 6
1 / -0

Which of the following aqueous solutions should have the highest boiling point?

A
1.0M NaOH

B
1.0M Na₂SO₄

C
1.0M HNO₃

D
1.0M KNO₃

Question 7
1 / -0

The unit of ebulioscopic constant is ..................

A
K kgmol^–1or K(molality)⁻¹

B
mol kg K^–1 or K^–1(molality)⁻¹

C
kg mol^–1K^–1or K^–1(molality)^–1

D
mol kg^–1or K(molality)⁻¹

Question 8
1 / -0

The main reason for the extremely low solubility of carbon dioxide in benzene $$(C_{6}H_{6})$$ at room temperature is due to which of the following?

A
The increased disorder due to mixing of the solute and solvent.

B
The relatively low strength of the intermolecular forces between carbon dioxide and benzene.

C
The strong hydrogen bonding in benzene.

D
The weak solvation of carbon and oxygen ions by benzene.

Question 9
1 / -0

Which of the following solution in water will have the lowest vapour pressure?

A
$$0.1 M, NaCI$$

B
$$0.1 M, Sucrose$$

C
$$0.1 M,{ BaCI }_{ 2 }$$

D
$$0.1 M { Na }_{ 3 }{ PO }_{ 4 }$$

Question 10
1 / -0

Which one of the following salts would have the same value of the van't Hoff factor as that of $$K_3Fe(CN)_6?$$

A
$$Al_2(SO_4)_3$$

B
$$NaCl$$

C
$$Na_2SO_4$$

D
$$Al(NO_3)_3$$

Question 11
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Ideal solution is formed when its components:

A
have zero heat of mixing only

B
have zero volume change on mixing only

C
have zero heat of mixing and zero volume change

D
can be converted into gases

Question 12
1 / -0

Which of the following components form an ideal solution?

A
Benzene and toluene

B
Acetone and aniline

C
Ethyl alcohol and benzene

D
Water and nitric acid

Question 13
1 / -0

For an ideal solution with $$P^o_A > P^o_B$$ , which of the following is true ?

A
$$^x_{A(I)} = ^ x_{A(v)}$$

B
$$^x_{A(I)} > ^ x_{A(v)}$$

C
$$^x_{A(I)} < ^ x_{A(v)}$$

D
No relationship in their mole fraction

Question 14
1 / -0

Which of the following would have the lowest vapor pressure in the pure state?

A
Sodium hydroxide because of the strong interparticle forces of ionic solids

B
Methanol because of the hydrogen bonding in the functional group along with the non-polar nature of the carbon hydrogen bonds

C
Water because of the very strong hydrogen bonding in the substances

D
Ammonia because of the unbonded pair of electrons on the central atom coupled with hydrogen bonding in the substance.

Question 15
1 / -0

Which of the following are true solutions?

A
ENO salt in water

B
Tomato soup

C
Aam panna

D
Filtered black tea

Question 16
1 / -0

Which characteristics the weak inter molecular forces of attraction in a liquid?

A
High boiling point

B
High vapour pressure

C
High critical temperature

D
High heat of vapourisation

Question 17
1 / -0

The rate of vapourisation of water depends upon :

A
temperature

B
surface area of container

C
kinetic energy of liquid molecules

D
all of the above

Submit Test

Solutions Test ...

Question 1

(i)- (d) (ii)- (c) (iii)- (a) (iv)- (b) (v)- (f) (vi)- (e)

(i)- (a) (ii)- (d) (iii)- (b) (iv)- (c) (v)- (e) (vi)- (f)

(i)- (e) (ii)- (f) (iii)- (b) (iv)- (a) (v)- (c) (vi)- (d)

(i)- (a) (ii)- (b) (iii)- (c) (iv)- (d) (v)- (e) (vi)- (f)

Question 2

Two different solutions of sucrose of same molality prepared in different solvents will have the same depression in freezing point.

The osmotic pressure of a solution is given by the equation Π = CRT ( where C is the molarity of the solution).

Decreasing order of osmotic pressure for 0.01 M aqueous solutions of barium chloride, potassium chloride, acetic acid and sucrose is BaCl2 > KCl > CH3COOH > sucrose.

According to Raoult’s law, the vapour pressure exerted by a volatile component of a solution is directly proportional to its mole fraction in the solution.

Question 3

2, 2 and 2

2, 2 and 3

1, 1 and 2

1, 1 and 1

Question 4

Units of atmospheric pressure and osmotic pressure are the same.

In reverse osmosis, solvent molecules move through a semipermeable membrane from a region of lower concentration of solute to a region of higher concentration.

The value of molal depression constant depends on nature of solvent.

Relative lowering of vapour pressure, is a dimensionless quantity.

Question 5

Assertion and reason both are correct statements and reason is correct explanation for assertion.

Assertion and reason both are correct statements but reason is not correct explanation for assertion.

Assertion is correct statement but reason is wrong statement

Assertion and reason both are incorrect statements.

Question 6

1.0M NaOH

1.0M Na2SO4

1.0M HNO3

1.0M KNO3

Question 7

K kgmol–1 or K(molality)−1

mol kg K–1 or K–1(molality)−1

kg mol–1 K–1 or K–1(molality)–1

mol kg–1 or K(molality)−1

Question 8

The increased disorder due to mixing of the solute and solvent.

The relatively low strength of the intermolecular forces between carbon dioxide and benzene.

The strong hydrogen bonding in benzene.

The weak solvation of carbon and oxygen ions by benzene.

Question 9

$$0.1 M, NaCI$$

$$0.1 M, Sucrose$$

$$0.1 M,{ BaCI }_{ 2 }$$

$$0.1 M { Na }_{ 3 }{ PO }_{ 4 }$$

Question 10

$$Al_2(SO_4)_3$$

$$NaCl$$

$$Na_2SO_4$$

$$Al(NO_3)_3$$

Question 11

have zero heat of mixing only

have zero volume change on mixing only

have zero heat of mixing and zero volume change

can be converted into gases

Question 12

Benzene and toluene

Acetone and aniline

Ethyl alcohol and benzene

Water and nitric acid

Question 13

$$^x_{A(I)} = ^ x_{A(v)}$$

$$^x_{A(I)} > ^ x_{A(v)}$$

$$^x_{A(I)} < ^ x_{A(v)}$$

No relationship in their mole fraction

Question 14

Sodium hydroxide because of the strong interparticle forces of ionic solids

Methanol because of the hydrogen bonding in the functional group along with the non-polar nature of the carbon hydrogen bonds

Water because of the very strong hydrogen bonding in the substances

Ammonia because of the unbonded pair of electrons on the central atom coupled with hydrogen bonding in the substance.

Question 15

ENO salt in water

Tomato soup

Aam panna

Filtered black tea

Question 16

High boiling point

High vapour pressure

High critical temperature

Decreasing order of osmotic pressure for 0.01 M aqueous solutions of barium chloride, potassium chloride, acetic acid and sucrose is BaCl₂> KCl > CH₃COOH > sucrose.

1.0M Na₂SO₄

1.0M HNO₃

1.0M KNO₃

K kgmol^–1or K(molality)⁻¹

mol kg K^–1 or K^–1(molality)⁻¹

kg mol^–1K^–1or K^–1(molality)^–1

mol kg^–1or K(molality)⁻¹