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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. Saturated solution of NaCl on heating becomes

Super saturated

None

Unsaturated

Remains saturated

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

Non-ideal solution

Azeotropic solution

Zeotropic solution

Ideal solution

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

Osmotic pressure

Elevation of boiling point

Density

Depression of freezing point

4. Which one will from an ideal solution?

C₂H₅OH and H₂O

CHCI₃ and CH₃COOCH₃

H₂O and HBr.

C₆H₆ and CCI₄

5. Units of molarity are

Gm/lit

Mol/lit

Kg/lit

None

6. Which has the minimum freezing point?

One Molal NaCl

One molal KCl Solution

One molal CaCI₂

One molal urea solution

7. 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 equal to mole fraction of solute

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

8. Beckmann’s apparatus is used to measure

Pressure

Temperature

B.P elevation

Depression in F.P

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

Opals

Fog

Paints

Dust particles in smoke

10. 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 metastable

It show positive deviation from Rault’s law

It is saturated

11. In partially miscible liquids the two layers are

Saturated solution of each other

Normal solution of each other

No layer formation takes place

Unsaturated solution of each other

12. 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

13. 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

14. The molal depression constant depends upon

∆H

Nature of solvent

Vapour pressure of solution

Nature of solute

15. The molal depression constant depends upon

Nature of solvent

∆H solution

Nature of solute

Vapour pressure of solution

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

Solution

Phase

Solute

Solvent

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

Amount of liquid

Temperature

Surface area of the container

Nature of non ovolatile

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

All of these

Concentrated

Dilute

Saturated solution

19. Depression in freezing point is directly to

Molality of solvent

Molarity of solvent

Molarity of solution

Molality of solution

20. Which inorganic precipitate acts as semipermeable membrane?

Nickel phosphate

Barium oxalate

Copper ferrocyanide

Calcium sulphate

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

Molarity

Molality

Formality

Mole fraction

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

1 mole solution

1 Molar solution

1 normal solution

None of these

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

Solute non-electrolyte

Volatile solute

Dilute solution

All

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

None of these

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

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

Unsaturated

Saturated

Supersaturated

None of these

Page 2 of 3

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

Reducing viscosity

Lowering in freezing point

Lowering in B.P

Reducing specific heat

27. 10ml of alcohol dissolve in 90ml of water unit of concentration used is

% v/w

% w/w

% w/v

% v/v

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

Mole fraction

Normality

Molarity

Molality

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

Reducing specific heat

Reducing viscosity

Lowering in freezing pt

Lowering in b.pt.

30. 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

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

Mole fraction

Molality

All

Molarity

32. Maximum F.P falls in

Naphthalene

Camphor

Benzene

Water

33. 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.)

0.045 N

0.066 N

0.090 N

0.033 N

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

Coordinate compounds

Double salts

Hydrates

Complexes

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

H₂O and HBr.

CHCI₃ and CH₃ 100 CH₃

C₂H₅OH and H₂O

C₆H₆ and CCI₄

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

Amorphous

Super saturated

Azeotropic mixture

Ideal

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

Glucose

CaCl₂

KCl

Urea

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

900 cmn³

200 cm³

1.8 dm³

1 dm³

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

All of these

Dilute solution

Non-volatile solute

Non-electrolyte solute

40. The liquid pair which is not completely miscible

Phenol and water

CH₃OH and water

Alcohol and water

Benzene and toluene

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

Acetone – chloroform

Water – nitric acid

Water – hydrochloric acid

Benzene – methanol

42. The solution which distils over with change in composition

Non-ideal solution

Ideal solution

Zeotropic solution

Azeotropic solution

43. Which of the following is a colligative property?

Sublimation temperature

Melting point

Osmotic pressure

Freezing point

44. The lowest vapour pressure is exerted by

Ethanol

Water

Chloroform

Methanol

45. Solution of Na2SO4 will be

Basic

More acidic

Neutral

Acidic

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

Osmosis

Electrolysis

Electrophoresis

Cataphoresis

47. Isotonic solutions have same

Molality

Normality

Molar concentration

None of these

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

Osmotic pressure

Lowering of vapour pressure

Elevation of polling point

Freezing point

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

Osmatic pressure

Freezing point

Lowering of vapour pressure

Elevation of boiling point

50. 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

Page 3 of 3

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

Ion

Solute

Solvent

Phase

52. Osmotic pressure of a solution increases by

Increasing the volume

Decreasing the temperature

None of these

Increasing the number of molecules of the solute

53. Which is not a colligative property?

Lowering of vapour pressure

Osmotic pressure

Depression of freezing point

Elevation of boiling point

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

Mole fraction of solute

Mole fraction of Solvent

Molarity

Molality

55. The osmotic pressure of solution increases if

Number of solute molecules are increased

Volume is increased

Temperature is decreased

Solution constant is increased

56. The concentration units independent of temperature would be

Mass-volume percent

Molarity

Normality

Molality

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

Depression in freezing pint

Elevation of boiling point

Osmotic pressure

Modification of refractive index

58. 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

1.20 eq

2.40 eq

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

Ion

Solution

Compound

Radical

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

Super saturated solution

Unsaturated solution

Dilute solution

Saturated solution

61. 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

62. The process of osmosis was first discovered by

Pfeffer

Nollet

Dutrochet

Traube

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

Solvent

Solution

Solute

Solvation

64. A solution of two components is called

Standard solution

Original solution

Dilute solution

Binary solution

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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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