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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 solutions of H₂SO₄ is more concentrated?

1 mole solution

1 normal solution

1 Molar solution

None of these

2. The process of osmosis was first discovered by

Traube

Pfeffer

Dutrochet

Nollet

3. A solution of two components is called

Original solution

Dilute solution

Binary solution

Standard solution

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

Elevation of boiling point

Depression of freezing point

Density

Osmotic pressure

5. Which is not a colligative property?

Elevation of boiling point

Lowering of vapour pressure

Depression of freezing point

Osmotic pressure

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

CaCl₂

KCl

Glucose

Urea

7. Isotonic solutions have same

Molality

Normality

Molar concentration

None of these

8. The concentration units independent of temperature would be

Normality

Mass-volume percent

Molarity

Molality

9. 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).

0.600 eq

3.60 eq

2.40 eq

1.20 eq

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

Dilute solution

Solute non-electrolyte

All

Volatile solute

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

Fog

Opals

Dust particles in smoke

Paints

12. The osmotic pressure of solution increases if

Temperature is decreased

Number of solute molecules are increased

Solution constant is increased

Volume is increased

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

Osmotic pressure

Freezing point

Lowering of vapour pressure

Elevation of polling point

14. 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 is non-ideal, showing +ve deviation from Raoult’s Law

The solution formed is an ideal solution

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

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

Dilute solution

Non-volatile solute

All of these

Non-electrolyte solute

16. The molal depression constant depends upon

Nature of solute

Nature of solvent

∆H

Vapour pressure of solution

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

Depression in freezing pint

Modification of refractive index

Elevation of boiling point

Osmotic pressure

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

Ideal

Super saturated

Azeotropic mixture

Amorphous

19. 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.)

0.066 N

0.045 N

0.090 N

0.033 N

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

Lowering in freezing point

Reducing viscosity

Reducing specific heat

Lowering in B.P

21. Beckmann’s apparatus is used to measure

B.P elevation

Pressure

Depression in F.P

Temperature

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

Saturated

Unsaturated

None of these

Supersaturated

23. Osmotic pressure of a solution increases by

None of these

Increasing the volume

Decreasing the temperature

Increasing the number of molecules of the solute

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

Solute

Phase

Ion

Solvent

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

Lowering of vapour pressure

Osmatic pressure

Elevation of boiling point

Freezing point

Page 2 of 3

26. The solution which distils over with change in composition

Zeotropic solution

Azeotropic solution

Non-ideal solution

Ideal solution

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

-3.72°C

+1.86°C

-1.86°C

+3.72°C

28. Which of the following is a colligative property?

Freezing point

Sublimation temperature

Osmotic pressure

Melting point

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

CHCI₃ and CH₃ 100 CH₃

C₂H₅OH and H₂O

H₂O and HBr.

C₆H₆ and CCI₄

30. 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 A to that of B take place

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

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

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

Molarity

Molality

Formality

Mole fraction

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

1.8 dm³

200 cm³

900 cmn³

1 dm³

33. The liquid pair which is not completely miscible

CH₃OH and water

Alcohol and water

Benzene and toluene

Phenol and water

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

Solution

Solvent

Solute

Solvation

35. The molal depression constant depends upon

Nature of solvent

Nature of solute

∆H solution

Vapour pressure of solution

36. 10ml of alcohol dissolve in 90ml of water unit of concentration used is

% w/w

% w/v

% v/w

% v/v

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

Solution

Solute

Solvent

Phase

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

Mole fraction

Molality

Molarity

All

39. In partially miscible liquids the two layers are

No layer formation takes place

Unsaturated solution of each other

Normal solution of each other

Saturated solution of each other

40. The lowest vapour pressure is exerted by

Ethanol

Chloroform

Methanol

Water

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

Water – nitric acid

Water – hydrochloric acid

Benzene – methanol

Acetone – chloroform

42. Which one will from an ideal solution?

C₆H₆ and CCI₄

CHCI₃ and CH₃COOCH₃

C₂H₅OH and H₂O

H₂O and HBr.

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

Complexes

Double salts

Hydrates

Coordinate compounds

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

Mole fraction of solute

Molality

Mole fraction of Solvent

Molarity

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

Electrolysis

Electrophoresis

Cataphoresis

Osmosis

46. Maximum F.P falls in

Benzene

Naphthalene

Camphor

Water

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

Molarity

Molality

Mole fraction

Normality

48. Which inorganic precipitate acts as semipermeable membrane?

Nickel phosphate

Copper ferrocyanide

Barium oxalate

Calcium sulphate

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

Ideal solution

Non-ideal solution

Azeotropic solution

Zeotropic solution

50. Units of molarity are

Gm/lit

Mol/lit

Kg/lit

None

Page 3 of 3

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

All of these

Saturated solution

Dilute

Concentrated

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

Surface area of the container

Amount of liquid

Temperature

Nature of non ovolatile

53. Depression in freezing point is directly to

Molality of solvent

Molarity of solution

Molality of solution

Molarity of solvent

54. Saturated solution of NaCl on heating becomes

Super saturated

Unsaturated

Remains saturated

None

55. 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

Equal to the total volume of the components

None of these

56. 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 relative lowering of vapour pressure is equal to mole fraction of solute

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

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

Super saturated solution

Saturated solution

Dilute solution

Unsaturated solution

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

Reducing viscosity

Lowering in freezing pt

Reducing specific heat

Lowering in b.pt.

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

More fraction of solvent

Molecular weight of the solvent

Pressure of the atmosphere

The mole fraction of Solute

60. Solution of Na2SO4 will be

More acidic

Neutral

Acidic

Basic

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

Solution

Compound

Radical

Ion

62. Which has the minimum freezing point?

One molal CaCI₂

One molal urea solution

One molal KCl Solution

One Molal NaCl

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

Will be non-ideal solution

Will show deviations from Raoults law

Will be an ideal solution

Both b & c

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

It is metastable

It shows negative deviation from Rault’s law

It show positive deviation from Rault’s law

It is saturated

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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

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