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

Electrolysis

Cataphoresis

Electrophoresis

Osmosis

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

Density

Depression of freezing point

Osmotic pressure

Elevation of boiling point

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

Saturated solution

Unsaturated solution

Super saturated solution

Dilute solution

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

1 Molar solution

None of these

1 normal solution

1 mole solution

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

Freezing point

Elevation of boiling point

Lowering of vapour pressure

Osmatic pressure

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

Reducing specific heat

Lowering in b.pt.

Reducing viscosity

Lowering in freezing pt

7. 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

n-heptane shows +ve deviation while ethanol shows – 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

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

Non-electrolyte solute

All of these

Dilute solution

Non-volatile solute

9. The concentration units independent of temperature would be

Normality

Mass-volume percent

Molality

Molarity

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

C₂H₅OH and H₂O

C₆H₆ and CCI₄

CHCI₃ and CH₃ 100 CH₃

H₂O and HBr.

11. Depression in freezing point is directly to

Molality of solvent

Molarity of solution

Molarity of solvent

Molality of solution

12. Saturated solution of NaCl on heating becomes

None

Unsaturated

Remains saturated

Super saturated

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

+1.86°C

-1.86°C

+3.72°C

-3.72°C

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

Mole fraction

Formality

Molality

Molarity

15. Isotonic solutions have same

None of these

Molality

Molar concentration

Normality

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

Solvent

Solvation

Solute

Solution

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

None of these

Supersaturated

Unsaturated

Saturated

18. Units of molarity are

None

Kg/lit

Gm/lit

Mol/lit

19. Osmotic pressure of a solution increases by

Decreasing the temperature

Increasing the volume

Increasing the number of molecules of the solute

None of these

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

It shows negative deviation from Rault’s law

It is saturated

It is metastable

It show positive deviation from Rault’s law

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

Will be an ideal solution

Will be non-ideal solution

Both b & c

Will show deviations from Raoults law

22. 10ml of alcohol dissolve in 90ml of water unit of concentration used is

% v/w

% w/w

% w/v

% v/v

23. The molal depression constant depends upon

Nature of solvent

Nature of solute

∆H

Vapour pressure of solution

24. 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

0.600 eq

2.40 eq

1.20 eq

25. In partially miscible liquids the two layers are

Normal solution of each other

No layer formation takes place

Saturated solution of each other

Unsaturated solution of each other

Page 2 of 3

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

Super saturated

Azeotropic mixture

Amorphous

Ideal

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

Water – nitric acid

Acetone – chloroform

Benzene – methanol

Water – hydrochloric acid

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

Change in temperature of solutions takes place

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

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

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

29. The process of osmosis was first discovered by

Dutrochet

Nollet

Pfeffer

Traube

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

Radical

Compound

Ion

Solution

31. Beckmann’s apparatus is used to measure

Depression in F.P

B.P elevation

Pressure

Temperature

32. Which inorganic precipitate acts as semipermeable membrane?

Barium oxalate

Calcium sulphate

Nickel phosphate

Copper ferrocyanide

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

The mole fraction of Solute

Molecular weight of the solvent

Pressure of the atmosphere

More fraction of solvent

34. Which one will from an ideal solution?

H₂O and HBr.

C₆H₆ and CCI₄

C₂H₅OH and H₂O

CHCI₃ and CH₃COOCH₃

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

Lowering in B.P

Reducing viscosity

Reducing specific heat

Lowering in freezing point

36. A solution of two components is called

Standard solution

Original solution

Binary solution

Dilute solution

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

Elevation of boiling point

Osmotic pressure

Depression in freezing pint

Modification of refractive index

38. Maximum F.P falls in

Naphthalene

Benzene

Water

Camphor

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

Urea

CaCl₂

KCl

Glucose

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

Mole fraction of Solvent

Mole fraction of solute

Molality

Molarity

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

All

Solute non-electrolyte

Volatile solute

Dilute solution

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

Molarity

Molality

Mole fraction

Normality

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

Saturated solution

Dilute

All of these

Concentrated

44. Which is not a colligative property?

Elevation of boiling point

Osmotic pressure

Lowering of vapour pressure

Depression of freezing point

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

Nature of non ovolatile

Temperature

Surface area of the container

Amount of liquid

46. 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

Slightly less than the total volume of the components

None of these

Equal to the total volume of the components

47. Solution of Na2SO4 will be

Acidic

Basic

More acidic

Neutral

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

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

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

49. Which has the minimum freezing point?

One molal KCl Solution

One molal CaCI₂

One molal urea solution

One Molal NaCl

50. Which of the following is a colligative property?

Osmotic pressure

Melting point

Freezing point

Sublimation temperature

Page 3 of 3

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

Coordinate compounds

Hydrates

Complexes

Double salts

52. The liquid pair which is not completely miscible

Benzene and toluene

Alcohol and water

CH₃OH and water

Phenol and water

53. The solution which distils over with change in composition

Non-ideal solution

Zeotropic solution

Ideal solution

Azeotropic solution

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

Elevation of polling point

Lowering of vapour pressure

Osmotic pressure

Freezing point

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

Solvent

Solute

Solution

Phase

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

Phase

Ion

Solvent

Solute

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

1.8 dm³

200 cm³

1 dm³

900 cmn³

58. The osmotic pressure of solution increases if

Number of solute molecules are increased

Temperature is decreased

Volume is increased

Solution constant is increased

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

Azeotropic solution

Non-ideal solution

Zeotropic solution

Ideal solution

60. The lowest vapour pressure is exerted by

Chloroform

Water

Methanol

Ethanol

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

0.045 N

0.033 N

0.066 N

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

Dust particles in smoke

Paints

Fog

Opals

63. The molal depression constant depends upon

Nature of solute

Vapour pressure of solution

Nature of solvent

∆H solution

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

Molarity

Molality

Mole fraction

All

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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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