Solutions Test

Result

Solutions Test - 5

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Which of the following is a colligative prope

A
Dipole moment

B
Change in free energy

C
Heat of vapourization

D
Osmotic pressure

Solution

Colligative property is dependent on no. of moles of solute. (Л=cRT)
Question 2
1 / -0

The rate at which a solid dissolves in liquid does not depend on

A
Temperature

B
Pressure

C
Particle size

D
Concentration

Solution

The rate at which a solid dissolves in liquid does not depend on pressure.
Question 3
1 / -0

How many grams of 2.0 M CH₃OH would have to be added to water to prepare 150 ml of its solution?

A
6.9g

B
4.3 g

C
9.6 g

D
2.4 g
Question 4
1 / -0

Two solutions have different osmotic pressures. The solution of higher osmotic pressure is called

A
Hypertonic solution

B
Isotonic solution

C
Isotropic solution

D
Hypotonic solution

Solution

Hypertonic solutions are having high Osmotic Pressure.
Question 5
1 / -0

Which of the following colligative properties can provide molar masses of proteins (or polymers or colloids) with the greatest precision?

A
Osmotic pressure

B
Elevation of boiling point

C
Depression of freezing point

D
Relative lowering of vapour pressure
Question 6
1 / -0

Cryoscopic constant of a liquid is

A
The elevation for 1 molar solution

B
Decrease in freezing point when 1 g of solute is dissolved per kg of the solvent

C
Decrease in freezing point when 1 mole of solute is dissolved per Kg of the solvent

D
A factor used for calculation of elevation in boiling point

Solution
Question 7
1 / -0

For a system containing two liquids X and Y, Raoult's law is obeyed when

A
X and Y have similar structures and dipole moments

B
X and Y associate or dissociate in solution

C
X and Y are immiscible

D
X and Y are immiscible and hydrogen bonding occurs between them
Question 8
1 / -0

The expression relating mole fraction of solute in a solution with its molality is (where the various symbols have their usual meanings)

A

B

C

D
Question 9
1 / -0

Isotonic solutions have the same

A
freezing point

B
boiling point

C
osmotic pressure

D
vapour pressure
Question 10
1 / -0

Suppose 52.5 ml of a solution contains 3.50 g of solute x in 50.0 g of water and the freezing point of the solution is – 0.86^oC. Which of the following statements is not true?

A
Molality of the solution is 0.46 m.

B
Mole fraction of x in the solution is 0.0082.

C
Molarity of the solution is 0.44.

D
Molar mass of x is 76 g/mol.
Question 11
1 / -0

Directions: The following question has four choices out of which ONLY ONE is correct.

Blood cells do not shrink in blood because blood is

A
hypotonic

B
isotonic

C
equimolar

D
hypertonic
Question 12
1 / -0

Which of the following properties represents a non-ideal solution?

A
The interaction between the components is similar to that in the pure components.

B
There is no enthalpy change on mixing.

C
There is no volume change on mixing.

D
Their components show positive and negative deviations from Raoult's law.
Question 13
1 / -0

The volume of water to be added to 100 cm³ of 0.5 N H₂SO₄ to get decinormal concentration is

A
400 cm³

B
450 cm³

C
500 cm³

D
100 cm³
Question 14
1 / -0

Directions: The following question has four choices out of which ONLY ONE is correct.

Which one of the following aqueous solutions will exhibit the highest boiling point?

A
0.01 M Na₂SO₄

B
0.01 M KNO₃

C
0.015 M urea

D
0.015 M glucose

E
0.0015 M glucose
Question 15
1 / -0

Directions: The following question has four choices out of which ONLY ONE is correct.

Which of the following statements is true for 0.1 M aqueous solution of glucose and potassium chloride?

A
Boiling point of glucose solution is more than that of KCl solution.

B
Freezing point of glucose solution will be less than that of KCl.

C
Osmotic pressure of glucose solution will be less than that of KCl solution.

D
Lowering of vapour pressure of both the solutions is identical.
Question 16
1 / -0

The relative lowering of vapour pressure of a dilute aqueous solution containing non-volatile solute is 0.0125. The molality of the solution is about

A
0.70 m

B
0.50 m

C
0.90 m

D
0.80 m
Question 17
1 / -0

Directions: The following question has four choices out of which ONLY ONE is correct.

Which of the following aqueous solutions will have the lowest freezing point?

A
1.5 m glucose

B
0.3 m Na₂SO₄

C
1 m NaCl

D
0.5 m BaSO₄
Question 18
1 / -0

The osmotic pressure of a dilute solution decreases when

A
more solute is added

B
more solvent is added

C
temperature is increased

D
any one of the above changes is made
Question 19
1 / -0

The van't Hoff factor for 0.1 M Ba(NO₃)₂ is 2.35. What is the percentage dissociation of Ba(NO₃)₂?

A
78.33%

B
91.5%

C
100%

D
67.5%
Question 20
1 / -0

At constant temperature the osmotic pressure of a solution is

A
Inversely proportional to the concentration

B
Directly proportional to the square root of the concentration

C
Directly proportional to the concentration

D
Directly proportional to the square of the concentration

Solution

Л=cRT
Question 21
1 / -0

In which of the following cases is Henry's law valid?

A
When pressure is very high

B
When temperature is very low

C
When the gas is not highly soluble

D
When the gas reacts chemically with the solvent
Question 22
1 / -0

Ethylene dibromide (C₂H₄Br₂) and 1,2-dibromopropane (C₃H₆Br₂) form a series of ideal solutions over the whole range of compositions and at 85^oC, the vapour pressures of these two pure liquids are 173 torr and 127 torr, respectively. If 10.0 g of ethylene bromide is dissolved in 80.0 g of 1,2-dibromopropane, then which of the following statements is correct?

A
Partial pressure of ethylene dibromide in vapour phase is 112 torr.

B
Partial pressure of 1,2-dibromopropane is 20.4 torr.

C
Total pressure of the vapour is 232.4 torr.

D
Mole fraction of ethylene dibromide in the vapour phase is 0.154.
Question 23
1 / -0

The rise in the boiling point of a solution containing 1.8 g of glucose in 100 g of solvent is 0.1^oC. The molal elevation constant of the liquid is

A
1 K/m

B
0.1 K/m

C
0.01 K/m

D
10 K/m
Question 24
1 / -0

Directions: The following question has four choices out of which ONLY ONE is correct.

Which of the following statements contradicts Raoult's law?

A
Due to non-volatile solute, relative lowering of vapour pressure of a solution is equal to the mole fraction of the solute in solution.

B
Vapour pressure of solution is directly proportional to the mole fraction of the solvent.

C
Lowering of vapour pressure for a particular solution is independent of temperature.

D
Relative lowering of vapour pressure for a particular solution is independent of temperature.
Question 25
1 / -0

The van't Hoff factor of benzoic acid in benzene is found to be

A
1

B
2

C
0.5

D
1.5

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Solutions Test - 5

Result

Solutions Test - 5

Score

-

Rank

-

SHARING IS CARING

Question 1

Dipole moment

Change in free energy

Heat of vapourization

Osmotic pressure

Solution

Question 2

Temperature

Pressure

Particle size

Concentration

Solution

Question 3

6.9 g

4.3 g

9.6 g

2.4 g

Question 4

Hypertonic solution

Isotonic solution

Isotropic solution

Hypotonic solution

Solution

Question 5

Osmotic pressure

Elevation of boiling point

Depression of freezing point

Relative lowering of vapour pressure

Question 6

The elevation for 1 molar solution

Decrease in freezing point when 1 g of solute is dissolved per kg of the solvent

Decrease in freezing point when 1 mole of solute is dissolved per Kg of the solvent

A factor used for calculation of elevation in boiling point

Solution

Question 7

X and Y have similar structures and dipole moments

X and Y associate or dissociate in solution

X and Y are immiscible

X and Y are immiscible and hydrogen bonding occurs between them

Question 8

Question 9

freezing point

boiling point

osmotic pressure

vapour pressure

Question 10

Molality of the solution is 0.46 m.

Mole fraction of x in the solution is 0.0082.

Molarity of the solution is 0.44.

Molar mass of x is 76 g/mol.

Question 11

hypotonic

isotonic

equimolar

hypertonic

Question 12

The interaction between the components is similar to that in the pure components.

There is no enthalpy change on mixing.

There is no volume change on mixing.

Their components show positive and negative deviations from Raoult's law.

Question 13

400 cm3

450 cm3

500 cm3

100 cm3

Question 14

0.01 M Na2SO4

0.01 M KNO3

0.015 M urea

0.015 M glucose

0.0015 M glucose

Question 15

6.9g

400 cm³

450 cm³

500 cm³

100 cm³

0.01 M Na₂SO₄

0.01 M KNO₃

0.3 m Na₂SO₄

0.5 m BaSO₄