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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 Molar solution

None of these

1 mole solution

1 normal solution

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

Molarity

Molality

Formality

Mole fraction

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

Urea

KCl

CaCl₂

Glucose

4. 10ml of alcohol dissolve in 90ml of water unit of concentration used is

% v/v

% v/w

% w/v

% w/w

5. Which of the following is a colligative property?

Sublimation temperature

Freezing point

Melting point

Osmotic pressure

6. Which has the minimum freezing point?

One Molal NaCl

One molal KCl Solution

One molal CaCI₂

One molal urea solution

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

Non-electrolyte solute

All of these

Dilute solution

Non-volatile solute

8. The lowest vapour pressure is exerted by

Methanol

Chloroform

Water

Ethanol

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

Solution

Solvent

Solute

Solvation

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

Solvent

Phase

Solute

Ion

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

Freezing point

Osmotic pressure

Lowering of vapour pressure

Elevation of polling point

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

Non-ideal solution

Zeotropic solution

Ideal solution

Azeotropic solution

13. Units of molarity are

Mol/lit

Kg/lit

None

Gm/lit

14. 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 more than the total volume of the components

None of these

Slightly less than the total volume of the components

15. 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 b.pt.

Lowering in freezing pt

16. In partially miscible liquids the two layers are

Saturated solution of each other

No layer formation takes place

Normal solution of each other

Unsaturated solution of each other

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

Saturated

Supersaturated

Unsaturated

None of these

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

Normality

Molarity

Molality

Mole fraction

19. A solution of two components is called

Dilute solution

Standard solution

Original solution

Binary solution

20. 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

21. Osmotic pressure of a solution increases by

Increasing the volume

Increasing the number of molecules of the solute

Decreasing the temperature

None of these

22. Solution of Na2SO4 will be

Neutral

Acidic

Basic

More acidic

23. 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

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

Reducing specific heat

Lowering in freezing point

Reducing viscosity

Lowering in B.P

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

Modification of refractive index

Osmotic pressure

Depression in freezing pint

Elevation of boiling point

Page 2 of 3

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

Mole fraction

Molarity

Molality

All

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

Water – nitric acid

Water – hydrochloric acid

Benzene – methanol

Acetone – chloroform

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

CHCI₃ and CH₃ 100 CH₃

H₂O and HBr.

C₆H₆ and CCI₄

C₂H₅OH and H₂O

29. Which one will from an ideal solution?

C₂H₅OH and H₂O

H₂O and HBr.

C₆H₆ and CCI₄

CHCI₃ and CH₃COOCH₃

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

Dilute solution

All

Solute non-electrolyte

Volatile solute

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

200 cm³

1 dm³

900 cmn³

1.8 dm³

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

Density

Elevation of boiling point

Osmotic pressure

Depression of freezing point

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

Fog

Dust particles in smoke

Opals

Paints

34. Maximum F.P falls in

Camphor

Water

Naphthalene

Benzene

35. 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).

2.40 eq

0.600 eq

3.60 eq

1.20 eq

36. Isotonic solutions have same

Molality

Molar concentration

None of these

Normality

37. Which is not a colligative property?

Elevation of boiling point

Osmotic pressure

Lowering of vapour pressure

Depression of freezing point

38. 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

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

Molality

Mole fraction of Solvent

Mole fraction of solute

Molarity

40. Beckmann’s apparatus is used to measure

Pressure

Temperature

Depression in F.P

B.P elevation

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

Temperature

Surface area of the container

Amount of liquid

Nature of non ovolatile

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

Solution

Solute

Phase

Solvent

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

Cataphoresis

Electrolysis

Electrophoresis

Osmosis

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

Lowering of vapour pressure

Osmatic pressure

Elevation of boiling point

Freezing point

45. Which inorganic precipitate acts as semipermeable membrane?

Copper ferrocyanide

Calcium sulphate

Nickel phosphate

Barium oxalate

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

Super saturated solution

Unsaturated solution

Saturated solution

Dilute solution

47. 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

48. The liquid pair which is not completely miscible

CH₃OH and water

Phenol and water

Alcohol and water

Benzene and toluene

49. 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

0.045 N

0.090 N

0.066 N

50. The concentration units independent of temperature would be

Molality

Molarity

Normality

Mass-volume percent

Page 3 of 3

51. The molal depression constant depends upon

∆H

Nature of solute

Nature of solvent

Vapour pressure of solution

52. The solution which distils over with change in composition

Azeotropic solution

Ideal solution

Zeotropic solution

Non-ideal solution

53. The osmotic pressure of solution increases if

Volume is increased

Temperature is decreased

Number of solute molecules are increased

Solution constant is increased

54. The molal depression constant depends upon

∆H solution

Nature of solute

Nature of solvent

Vapour pressure of solution

55. Saturated solution of NaCl on heating becomes

Remains saturated

Unsaturated

None

Super saturated

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

Dilute

All of these

Saturated solution

Concentrated

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

Amorphous

Super saturated

Ideal

Azeotropic mixture

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

Will be an ideal solution

Will show deviations from Raoults law

Both b & c

Will be non-ideal solution

59. Depression in freezing point is directly to

Molality of solution

Molarity of solvent

Molality of solvent

Molarity of solution

60. 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

Change in temperature of solutions takes 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

61. The process of osmosis was first discovered by

Traube

Pfeffer

Dutrochet

Nollet

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

Coordinate compounds

Hydrates

Double salts

Complexes

63. 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 formed is an ideal solution

The solution is non-ideal, showing – ve deviation from Raoult’s Law

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

Solution

Ion

Compound

Radical

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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

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