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

200 cm³

1.8 dm³

1 dm³

900 cmn³

2. The molal depression constant depends upon

Vapour pressure of solution

Nature of solvent

Nature of solute

∆H solution

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

Urea

KCl

Glucose

CaCl₂

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

Mole fraction of Solvent

Molality

Mole fraction of solute

Molarity

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

H₂O and HBr.

CHCI₃ and CH₃ 100 CH₃

C₆H₆ and CCI₄

C₂H₅OH and H₂O

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

Reducing viscosity

Lowering in b.pt.

Lowering in freezing pt

Reducing specific heat

7. The solution which distils over with change in composition

Azeotropic solution

Zeotropic solution

Ideal solution

Non-ideal solution

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

Normality

Molarity

Molality

Mole fraction

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

Solvation

Solution

Solvent

Solute

10. The osmotic pressure of solution increases if

Number of solute molecules are increased

Solution constant is increased

Temperature is decreased

Volume is increased

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

Molarity

All

Mole fraction

Molality

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

All of these

Dilute

Saturated solution

Concentrated

13. Saturated solution of NaCl on heating becomes

Remains saturated

Super saturated

Unsaturated

None

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

Complexes

Coordinate compounds

Hydrates

Double salts

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

The mole fraction of Solute

More fraction of solvent

Pressure of the atmosphere

Molecular weight of the solvent

16. 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

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

Solvent

Solute

Ion

Phase

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

All of these

Non-electrolyte solute

Non-volatile solute

Dilute solution

19. Which one will from an ideal solution?

C₂H₅OH and H₂O

C₆H₆ and CCI₄

CHCI₃ and CH₃COOCH₃

H₂O and HBr.

20. 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).

1.20 eq

3.60 eq

0.600 eq

2.40 eq

21. 10ml of alcohol dissolve in 90ml of water unit of concentration used is

% v/v

% w/v

% v/w

% w/w

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

Depression of freezing point

Osmotic pressure

Density

Elevation of boiling point

23. Isotonic solutions have same

Normality

None of these

Molality

Molar concentration

24. The concentration units independent of temperature would be

Normality

Molarity

Mass-volume percent

Molality

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

Ideal

Super saturated

Amorphous

Azeotropic mixture

Page 2 of 3

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

1 mole solution

None of these

1 Molar solution

1 normal solution

27. The liquid pair which is not completely miscible

Alcohol and water

CH₃OH and water

Phenol and water

Benzene and toluene

28. A solution of two components is called

Standard solution

Binary solution

Original solution

Dilute solution

29. The lowest vapour pressure is exerted by

Ethanol

Methanol

Water

Chloroform

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

Molality

Molarity

Mole fraction

Formality

31. Which is not a colligative property?

Depression of freezing point

Elevation of boiling point

Lowering of vapour pressure

Osmotic pressure

32. The process of osmosis was first discovered by

Pfeffer

Traube

Nollet

Dutrochet

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

-3.72°C

+1.86°C

+3.72°C

-1.86°C

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

Dilute solution

Volatile solute

Solute non-electrolyte

All

35. Which inorganic precipitate acts as semipermeable membrane?

Nickel phosphate

Calcium sulphate

Barium oxalate

Copper ferrocyanide

36. The molal depression constant depends upon

Nature of solute

∆H

Vapour pressure of solution

Nature of solvent

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

Elevation of boiling point

Osmatic pressure

Freezing point

Lowering of vapour pressure

38. Maximum F.P falls in

Water

Camphor

Naphthalene

Benzene

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

Electrolysis

Cataphoresis

Electrophoresis

Osmosis

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

Solution

Solvent

Solute

Phase

41. Solution of Na2SO4 will be

More acidic

Neutral

Basic

Acidic

42. 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

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

Benzene – methanol

Acetone – chloroform

Water – nitric acid

Water – hydrochloric acid

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

Modification of refractive index

Osmotic pressure

Depression in freezing pint

Elevation of boiling point

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

Non-ideal solution

Azeotropic solution

Ideal solution

Zeotropic solution

46. 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

47. 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

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

None of these

Saturated

Unsaturated

Supersaturated

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

Dilute solution

Unsaturated solution

Super saturated solution

Saturated solution

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

Fog

Opals

Paints

Dust particles in smoke

Page 3 of 3

51. Units of molarity are

Mol/lit

Kg/lit

None

Gm/lit

52. 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

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

The solution formed is an ideal solution

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

Compound

Solution

Ion

Radical

54. Osmotic pressure of a solution increases by

Decreasing the temperature

Increasing the number of molecules of the solute

Increasing the volume

None of these

55. Depression in freezing point is directly to

Molarity of solution

Molality of solvent

Molarity of solvent

Molality of solution

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

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

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

57. Which of the following is a colligative property?

Freezing point

Melting point

Sublimation temperature

Osmotic pressure

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

Elevation of polling point

Lowering of vapour pressure

Osmotic pressure

Freezing point

59. Beckmann’s apparatus is used to measure

Temperature

Depression in F.P

Pressure

B.P elevation

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

Will show deviations from Raoults law

Will be an ideal solution

Will be non-ideal solution

Both b & c

61. Which has the minimum freezing point?

One molal urea solution

One Molal NaCl

One molal KCl Solution

One molal CaCI₂

62. 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

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

Change in temperature of solutions takes place

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

None of these

Slightly less than the total volume of the components

Slightly more than the total volume of the components

Equal to the total volume of the components

64. In partially miscible liquids the two layers are

Normal solution of each other

No layer formation takes place

Unsaturated solution of each other

Saturated solution of each other

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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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