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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 are the conditions of colligative properties?

All

Solute non-electrolyte

Dilute solution

Volatile solute

2. Maximum F.P falls in

Water

Naphthalene

Benzene

Camphor

3. Saturated solution of NaCl on heating becomes

Super saturated

Unsaturated

Remains saturated

None

4. The molal depression constant depends upon

Nature of solute

∆H

Nature of solvent

Vapour pressure of solution

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

-3.72°C

+3.72°C

-1.86°C

+1.86°C

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

Hydrates

Coordinate compounds

Double salts

Complexes

7. Which is not a colligative property?

Elevation of boiling point

Osmotic pressure

Lowering of vapour pressure

Depression of freezing point

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

Urea

KCl

Glucose

CaCl₂

9. Isotonic solutions have same

Molality

Molar concentration

Normality

None of these

10. Which has the minimum freezing point?

One Molal NaCl

One molal urea solution

One molal CaCI₂

One molal KCl Solution

11. The liquid pair which is not completely miscible

CH₃OH and water

Phenol and water

Alcohol and water

Benzene and toluene

12. Depression in freezing point is directly to

Molality of solvent

Molarity of solvent

Molality of solution

Molarity of solution

13. 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

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

Density

Osmotic pressure

Elevation of boiling point

Depression of freezing point

15. 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?

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

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

16. 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

17. The process of osmosis was first discovered by

Dutrochet

Pfeffer

Traube

Nollet

18. 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

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

Electrolysis

Osmosis

Cataphoresis

Electrophoresis

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

H₂O and HBr.

CHCI₃ and CH₃ 100 CH₃

C₂H₅OH and H₂O

C₆H₆ and CCI₄

21. The osmotic pressure of solution increases if

Solution constant is increased

Number of solute molecules are increased

Temperature is decreased

Volume is increased

22. The molal depression constant depends upon

Nature of solute

Nature of solvent

Vapour pressure of solution

∆H solution

23. Solution of Na2SO4 will be

Basic

More acidic

Acidic

Neutral

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

Normality

Molality

Molarity

Mole fraction

25. Which inorganic precipitate acts as semipermeable membrane?

Nickel phosphate

Barium oxalate

Copper ferrocyanide

Calcium sulphate

Page 2 of 3

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

Unsaturated

Saturated

None of these

Supersaturated

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

Saturated solution

Unsaturated solution

Super saturated solution

Dilute solution

28. A solution of two components is called

Binary solution

Dilute solution

Original solution

Standard solution

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

Compound

Solution

Ion

Radical

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

Mole fraction

Molality

All

Molarity

31. The solution which distils over with change in composition

Non-ideal solution

Ideal solution

Zeotropic solution

Azeotropic solution

32. 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 B to that of A takes place

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

Change in temperature of solutions takes place

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

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

Solute

Solution

Solvation

Solvent

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

Dust particles in smoke

Opals

Paints

Fog

35. Units of molarity are

Gm/lit

Mol/lit

None

Kg/lit

36. Which one will from an ideal solution?

H₂O and HBr.

CHCI₃ and CH₃COOCH₃

C₆H₆ and CCI₄

C₂H₅OH and H₂O

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

Elevation of polling point

Lowering of vapour pressure

Freezing point

Osmotic pressure

38. 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

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

It show positive deviation from Rault’s law

It shows negative deviation from Rault’s law

It is saturated

It is metastable

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

Molarity

Mole fraction

Formality

Molality

41. Beckmann’s apparatus is used to measure

B.P elevation

Pressure

Temperature

Depression in F.P

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

Modification of refractive index

Elevation of boiling point

Osmotic pressure

Depression in freezing pint

43. Osmotic pressure of a solution increases by

None of these

Decreasing the temperature

Increasing the number of molecules of the solute

Increasing the volume

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

Reducing specific heat

Lowering in B.P

Reducing viscosity

Lowering in freezing point

45. 10ml of alcohol dissolve in 90ml of water unit of concentration used is

% v/v

% w/w

% w/v

% v/w

46. 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 vapor pressure of the solution is equal to mole fraction of the solvent

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

47. The concentration units independent of temperature would be

Normality

Mass-volume percent

Molality

Molarity

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

Phase

Ion

Solute

Solvent

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

All of these

Dilute solution

Non-volatile solute

Non-electrolyte solute

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

Zeotropic solution

Ideal solution

Non-ideal solution

Azeotropic solution

Page 3 of 3

51. In partially miscible liquids the two layers are

No layer formation takes place

Normal solution of each other

Saturated solution of each other

Unsaturated solution of each other

52. The lowest vapour pressure is exerted by

Chloroform

Ethanol

Methanol

Water

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

Solvent

Solute

Solution

Phase

54. Which of the following is a colligative property?

Melting point

Sublimation temperature

Osmotic pressure

Freezing point

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

Mole fraction of solute

Mole fraction of Solvent

Molarity

Molality

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

1 mole solution

None of these

1 Molar solution

1 normal solution

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

Super saturated

Ideal

Azeotropic mixture

Amorphous

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

Acetone – chloroform

Water – hydrochloric acid

Benzene – methanol

Water – nitric acid

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

The mole fraction of Solute

Pressure of the atmosphere

Molecular weight of the solvent

More fraction of solvent

60. 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.)

0.033 N

0.090 N

0.066 N

0.045 N

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

Nature of non ovolatile

Amount of liquid

Temperature

Surface area of the container

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

Elevation of boiling point

Osmatic pressure

Lowering of vapour pressure

Freezing point

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

Concentrated

Saturated solution

Dilute

All of these

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

Equal to the total volume of the components

Slightly less than the total volume of the components

None of these

Slightly more than the total volume of the components

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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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Chemistry Solutions MCQS Online Test

MDCAT Chemistry Solutions Chapter Online Test

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