Solutions Test

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Solutions Test - 39

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Weekly Quiz Competition

Question 1
4 / -1

1.0 molal aqueous solution of a substance boils at 100.55^o C ; then, at what approximate temperature, it freezes ? (Kb = 0.51^o C – kg - mole-1 and Kb = 1.86^o C – kg - mole-1)

A
272 K

B
271 K

C
375 K

D
274 K

Solution
Question 2
4 / -1

Ionic substances are completely dissociates, then aqueous solution of which of the following substances having least freezing point ?

A
glucose

B
NaCl

C
Al₂(SO₄)₃

D
CaCl₂
Question 3
4 / -1

0.2 M aqueous solution of NH₄Cl is isotonic with which of the following aqueous solution ?

A
0.1 M Na₃PO₄

B
0.2 M K₂SO₄

C
0.1 M Al₂(SO₄)₃

D
none of thses
Question 4
4 / -1

At constant temperature, osmotic pressure of an aqueous solution of 1.5 M NH₄NO₃ and xN Al₂(SO₄)₃ are equal, then mention the value of X. (Assume that ionic solid substances completely dissociates in the solution)

A
0.1

B
3.6

C
1.2

D
0.6

Solution
Question 5
4 / -1

At constant temperature, vapour pressure of an aqueous solution of 1.5M NH₄NO₃ and xM Al₂(SO₄)₃ are equal; then calculate the molality of an aqueous solution of Al₂(SO₄)₃. (Assume that ionic solid substances completely dissociates in the solution)

A
0.3m

B
2.1m

C
3.75m

D
0.6m
Question 6
4 / -1

Boiling point of the aqueous solution prepared by dissolving 1.5 mole substances in 1000 gm water at 1 atmosphere pressure is 100.5^oC; then which of the following alternative is correct for the solution ? (Kb = 0.152^oC – kg - mole-1)

A
i = 1

B
1 < i < 2

C
i < 1

D
i > 2
Question 7
4 / -1

Which of the following aqueous solution is isotonic with 0.2 m Na₄[CoF₆] solution ? (Assume that ionic solid substances completely dissociates in the solution)

A
0.2 m urea

B
0.25 m AlCl₃

C
0.15m CaCl₂

D
0.2 m CuSO₄
Question 8
4 / -1

Which type of solution, moist air is ?

A
gas

B
liquid

C
solid

D
colloidal
Question 9
4 / -1

Aqueous solutions are separated by semipermeable membrane. For which pair of the given solution having maximum osmotic pressure ? (Assume that ionic solid substances completely dissociates in the solution)

A
0.5 m NaCl | 0.1 m Na₂SO₄

B
0.3 m NaCl | 0.1 m Na₂SO₄

C
0.5 m NaCl | 0.1 m FeCl₃

D
0.5 m NaCl | 0.1 m sugar
Question 10
4 / -1

At constant temperature, the vapour pressure of an aqueous solution of Na₂SO₄ and 0.3 m Na₃PO₄ are approximately equal; then, what would be the molality of an aqueous solution of Na₂SO₄ ? (Assume that ionic solid substances completely dissociates in the solution)

A
0.5 m

B
0.6 m

C
0.4 m

D
1.2 m

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Re-Attempt Weekly Quiz Competition

Solutions Test - 39

Result

Solutions Test - 39

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SHARING IS CARING

Question 1

272 K

271 K

375 K

274 K

Solution

Question 2

glucose

NaCl

Al2(SO4)3

CaCl2

Question 3

0.1 M Na3PO4

0.2 M K2SO4

0.1 M Al2(SO4)3

none of thses

Question 4

0.1

3.6

1.2

0.6

Solution

Question 5

0.3m

2.1m

3.75m

0.6m

Question 6

i = 1

1 < i < 2

i < 1

i > 2

Question 7

0.2 m urea

0.25 m AlCl3

0.15m CaCl2

0.2 m CuSO4

Question 8

gas

liquid

solid

colloidal

Question 9

0.5 m NaCl | 0.1 m Na2SO4

0.3 m NaCl | 0.1 m Na2SO4

0.5 m NaCl | 0.1 m FeCl3

0.5 m NaCl | 0.1 m sugar

Question 10

0.5 m

0.6 m

0.4 m

1.2 m

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Al₂(SO₄)₃

CaCl₂

0.1 M Na₃PO₄

0.2 M K₂SO₄

0.1 M Al₂(SO₄)₃

0.25 m AlCl₃

0.15m CaCl₂

0.2 m CuSO₄

0.5 m NaCl | 0.1 m Na₂SO₄

0.3 m NaCl | 0.1 m Na₂SO₄

0.5 m NaCl | 0.1 m FeCl₃