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MDCAT Chemistry Solutions Online Test

Malik TahirLast Updated: May 24, 2025

Chemistry Solutions MCQS Online Test

MDCAT Chemistry Solutions Chapter Online Test

Total Questions:	64
Time Allowed:	30 Minutes
Total Marks:	64
How to Attempt Test:	Please choose the right Option in MCQ-type question.
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MDCAT Chemistry Solutions Test

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Page 1 of 3

Chemistry

1. Which of the following is not a colligative property?

Freezing point

Elevation of boiling point

Lowering of vapour pressure

Osmatic pressure

2. For dilute solution, Raoult’s law states that:

The relative lowering of vapour pressure is equal to mole fraction of solute

The lowering of vapor pressure is equal to the mole fraction of solute in solution

The relative lowering of vapour pressure is proportional to amount of solute

The vapor pressure of the solution is equal to mole fraction of the solvent

3. Solution of Na2SO4 will be

Basic

Acidic

More acidic

Neutral

4. Units of molarity are

Gm/lit

Kg/lit

None

Mol/lit

5. In partially miscible liquids the two layers are

Normal solution of each other

Saturated solution of each other

Unsaturated solution of each other

No layer formation takes place

6. The compounds in which water molecules are added are called

Double salts

Hydrates

Complexes

Coordinate compounds

7. The osmotic pressure of solution increases if

Number of solute molecules are increased

Volume is increased

Solution constant is increased

Temperature is decreased

8. Azeotropic mixture of two liquids boil at a lower temperature than either of them, when

It shows negative deviation from Rault’s law

It show positive deviation from Rault’s law

It is metastable

It is saturated

9. The lowest vapour pressure is exerted by

Ethanol

Chloroform

Water

Methanol

10. The molal depression constant depends upon

Nature of solvent

∆H

Nature of solute

Vapour pressure of solution

11. Which is not a colligative property?

Depression of freezing point

Osmotic pressure

Lowering of vapour pressure

Elevation of boiling point

12. The vapour pressure of a liquid in a closed container depends upon

Surface area of the container

Temperature

Amount of liquid

Nature of non ovolatile

13. The solution which does not boil at a particular temperature

Azeotropic solution

Zeotropic solution

Ideal solution

Non-ideal solution

14. Saturated solution of NaCl on heating becomes

Unsaturated

Super saturated

None

Remains saturated

15. The freezing point of 1 molal NaCl solution assuming NaCl to be 100% dissociated in water in

-1.86°C

+3.72°C

-3.72°C

+1.86°C

16. Beckmann’s apparatus is used to measure

Depression in F.P

B.P elevation

Temperature

Pressure

17. Which has the minimum freezing point?

One molal CaCI₂

One molal urea solution

One molal KCl Solution

One Molal NaCl

18. Which of the following liquid pairs shows a positive deviation from Raoult’s law?

Acetone – chloroform

Water – hydrochloric acid

Water – nitric acid

Benzene – methanol

19. The molal elevation constant is the ratio of the elevation in boiling point to

Molarity

Molality

Mole fraction of solute

Mole fraction of Solvent

20. Which of the following solutions of H₂SO₄ is more concentrated?

1 Molar solution

1 normal solution

1 mole solution

None of these

21. Number of moles of solute dissolved in 1 kg of solvent is called

Formality

Mole fraction

Molarity

Molality

22. Which of the following is a colligative property?

Melting point

Osmotic pressure

Sublimation temperature

Freezing point

23. The process of osmosis was first discovered by

Pfeffer

Dutrochet

Traube

Nollet

24. Homogeneous mixture of two or more than two compounds is called

Solution

Ion

Compound

Radical

25. Which of the following are the conditions of colligative properties?

All of these

Non-volatile solute

Dilute solution

Non-electrolyte solute

Page 2 of 3

26. Which of the following are the conditions of colligative properties?

All

Solute non-electrolyte

Volatile solute

Dilute solution

27. A solution of glucose is 10%. The volume in which 1 g mole of it is dissolved will be

900 cmn³

1 dm³

200 cm³

1.8 dm³

28. According to Raoult’s law, the relative lowering of vapour pressure is equal to

Molecular weight of the solvent

More fraction of solvent

The mole fraction of Solute

Pressure of the atmosphere

29. The liquid pair which is not completely miscible

Phenol and water

CH₃OH and water

Alcohol and water

Benzene and toluene

30. In azeotropic mixture showing positive deviation from Rault’s law, the volume of the mixture is

Slightly more than the total volume of the components

Equal to the total volume of the components

None of these

Slightly less than the total volume of the components

31. Osmotic pressure of a solution increases by

Decreasing the temperature

Increasing the volume

None of these

Increasing the number of molecules of the solute

32. If the volume of solution is equal to sum of volumes of its all components then the solution

Will show deviations from Raoults law

Both b & c

Will be an ideal solution

Will be non-ideal solution

33. A solution of two components is called

Standard solution

Original solution

Binary solution

Dilute solution

34. Which of the following unit of concentration is independent of temperature?

Mole fraction

All

Molarity

Molality

35. At 25°C, the highest osmotic pressure is exhibited by 0.1 M solution of

Urea

KCl

CaCl₂

Glucose

36. Maximum F.P falls in

Water

Camphor

Benzene

Naphthalene

37. Depression in freezing point is directly to

Molality of solution

Molarity of solution

Molarity of solvent

Molality of solvent

38. Solution with maximum concentration of solute at given temperature is called

Saturated solution

Dilute solution

Super saturated solution

Unsaturated solution

39. Number of moles in 1 kg of solvent is called

Normality

Molarity

Molality

Mole fraction

40. What happens when isotonic solution of A (mol. Wt. 342) and B (mol. wt 60) are put in to communication through semipermeable membrane?

Transference of solvent from solution A to that of B take place

Change in temperature of solutions takes place

No transference of solvent from solution A to that of B takes place

Transference of solvent from solution B to that of A takes place

41. The movement of solvent molecules through a semipermeable membrane is called

Electrolysis

Cataphoresis

Electrophoresis

Osmosis

42. In cold countries ethylene glycol is added to water in radiators of cars during winter. It results in

Reducing viscosity

Reducing specific heat

Lowering in b.pt.

Lowering in freezing pt

43. In cold countries ethylene glycol is added to water in radiators of cars during winter, It results in

Lowering in freezing point

Reducing specific heat

Lowering in B.P

Reducing viscosity

44. How many equivalents of phosphoric acid are contained in 300 mL of 4.00 M phosphoric acid? (Assume the acid is to be completely neutralized by a base).

3.60 eq

1.20 eq

0.600 eq

2.40 eq

45. Solution which distill without change in composition or temperature are called

Amorphous

Ideal

Super saturated

Azeotropic mixture

46. Which of the following is not a colligative property?

Depression in freezing pint

Osmotic pressure

Modification of refractive index

Elevation of boiling point

47. The solution which distils over with change in composition

Ideal solution

Azeotropic solution

Non-ideal solution

Zeotropic solution

48. A binary liquid solution is prepared by mixing n-heptane and ethanol. Which one of the following statement is correct regarding the behavior of the solution?

The solution is non-ideal, showing +ve deviation from Raoult’s Law

The solution formed is an ideal solution

The solution is non-ideal, showing – ve deviation from Raoult’s Law

n-heptane shows +ve deviation while ethanol shows – ve deviation from Raoult’s Law

49. If ionic product of solution is greater than solubility products, the solution is

Supersaturated

Saturated

Unsaturated

None of these

50. Which of the following is not a colligative property?

Elevation of boiling point

Density

Osmotic pressure

Depression of freezing point

Page 3 of 3

51. The molal depression constant depends upon

Nature of solute

∆H solution

Nature of solvent

Vapour pressure of solution

52. Isotonic solutions have same

Molar concentration

Normality

Molality

None of these

53. The component of solution which is in smaller amount is called

Solvent

Phase

Solute

Ion

54. Every sample of matter with uniform properties and fixed composition is called

Solvent

Solution

Phase

Solute

55. The concentration units independent of temperature would be

Mass-volume percent

Normality

Molality

Molarity

56. Which inorganic precipitate acts as semipermeable membrane?

Calcium sulphate

Barium oxalate

Nickel phosphate

Copper ferrocyanide

57. The relative lowering of vapour pressure is directly proportional to molality if the solution is

Concentrated

Dilute

All of these

Saturated solution

58. A homogeneous mixture of two or more than two chemical substances is called

Solvation

Solution

Solvent

Solute

59. Which one will from an ideal solution?

C₂H₅OH and H₂O

H₂O and HBr.

CHCI₃ and CH₃COOCH₃

C₆H₆ and CCI₄

60. 10ml of alcohol dissolve in 90ml of water unit of concentration used is

% v/w

% w/v

% w/w

% v/v

61. Calculate the normality of a solution that contains 4.5 g of (COOH)₂ in 3000 mL of solution? (Assume the (COOH)₂ is to be completely neutralized in an acid-base reaction.)

0.090 N

0.066 N

0.033 N

0.045 N

62. Which of the following is an example of liquid solute and gas solvent?

Fog

Paints

Opals

Dust particles in smoke

63. Which of the following in not a colligative property?

Elevation of polling point

Lowering of vapour pressure

Freezing point

Osmotic pressure

64. Which of the following will form an ideal solution?

C₆H₆ and CCI₄

CHCI₃ and CH₃ 100 CH₃

H₂O and HBr.

C₂H₅OH and H₂O

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Malik TahirLast Updated: May 24, 2025

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MDCAT Chemistry Solutions Online Test

Chemistry Solutions MCQS Online Test

MDCAT Chemistry Solutions Chapter Online Test

MDCAT Chemistry Solutions Test

Chemistry

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Malik Tahir

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Chemistry Solutions MCQS Online Test

MDCAT Chemistry Solutions Chapter Online Test

MDCAT Chemistry Solutions Test

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