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ECAT Chemistry Solutions Online Test

Maan AliLast Updated: April 19, 2025

Chemistry Solutions MCQS Online Test

ECAT 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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ECAT Chemistry Solutions Test

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Page 1 of 3

Chemistry

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

Supersaturated

Unsaturated

None of these

Saturated

2. 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

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

Solute

Phase

Solution

Solvent

4. Which has the minimum freezing point?

One molal KCl Solution

One molal CaCI₂

One molal urea solution

One Molal NaCl

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

Osmosis

Electrophoresis

Cataphoresis

Electrolysis

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

Nature of non ovolatile

Amount of liquid

Surface area of the container

Temperature

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

Solvent

Solvation

Solute

Solution

8. 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

0.033 N

0.090 N

9. Solution of Na2SO4 will be

Basic

Neutral

Acidic

More acidic

10. The lowest vapour pressure is exerted by

Chloroform

Methanol

Water

Ethanol

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

Radical

Ion

Compound

Solution

12. The concentration units independent of temperature would be

Normality

Molality

Molarity

Mass-volume percent

13. The molal depression constant depends upon

Vapour pressure of solution

∆H solution

Nature of solvent

Nature of solute

14. Saturated solution of NaCl on heating becomes

Unsaturated

Remains saturated

Super saturated

None

15. The osmotic pressure of solution increases if

Temperature is decreased

Number of solute molecules are increased

Solution constant is increased

Volume is increased

16. In partially miscible liquids the two layers are

No layer formation takes place

Saturated solution of each other

Unsaturated solution of each other

Normal solution of each other

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

Benzene – methanol

Water – nitric acid

Water – hydrochloric acid

Acetone – chloroform

18. The process of osmosis was first discovered by

Dutrochet

Nollet

Traube

Pfeffer

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

Molality

Mole fraction of solute

Molarity

Mole fraction of Solvent

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

Amorphous

Ideal

Azeotropic mixture

Super saturated

21. The solution which distils over with change in composition

Non-ideal solution

Ideal solution

Azeotropic solution

Zeotropic solution

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

Will be an ideal solution

Both b & c

Will be non-ideal solution

Will show deviations from Raoults law

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

Molarity

Mole fraction

Normality

Molality

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

Solvent

Phase

Solute

Ion

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

Mole fraction

Formality

Molarity

Molality

Page 2 of 3

26. Which one will from an ideal solution?

CHCI₃ and CH₃COOCH₃

C₆H₆ and CCI₄

H₂O and HBr.

C₂H₅OH and H₂O

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

None of these

1 mole solution

1 Molar solution

1 normal solution

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

1 dm³

900 cmn³

1.8 dm³

200 cm³

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

Volatile solute

Dilute solution

All

Solute non-electrolyte

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

Depression in freezing pint

Elevation of boiling point

Modification of refractive index

Osmotic pressure

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

Coordinate compounds

Complexes

Hydrates

Double salts

32. Maximum F.P falls in

Benzene

Naphthalene

Camphor

Water

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

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 equal to mole fraction of solute

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

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

All of these

Dilute

Concentrated

Saturated solution

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).

0.600 eq

3.60 eq

2.40 eq

1.20 eq

36. The molal depression constant depends upon

Nature of solute

Nature of solvent

Vapour pressure of solution

∆H

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

CHCI₃ and CH₃ 100 CH₃

C₆H₆ and CCI₄

H₂O and HBr.

C₂H₅OH and H₂O

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

None of these

Equal to the total volume of the components

Slightly more than the total volume of the components

Slightly less than the total volume of the components

39. 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 formed is an ideal 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

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

Dilute solution

Unsaturated solution

Saturated solution

Super saturated solution

41. Depression in freezing point is directly to

Molarity of solution

Molarity of solvent

Molality of solution

Molality of solvent

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

It is metastable

It is saturated

It shows negative deviation from Rault’s law

It show positive deviation from Rault’s law

43. Which is not a colligative property?

Elevation of boiling point

Depression of freezing point

Osmotic pressure

Lowering of vapour pressure

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

Depression of freezing point

Elevation of boiling point

Osmotic pressure

Density

45. A solution of two components is called

Standard solution

Dilute solution

Original solution

Binary solution

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

Molality

All

Molarity

Mole fraction

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

Paints

Fog

Opals

Dust particles in smoke

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

Ideal solution

Zeotropic solution

Non-ideal solution

Azeotropic solution

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

The mole fraction of Solute

Molecular weight of the solvent

More fraction of solvent

Pressure of the atmosphere

50. Osmotic pressure of a solution increases by

Increasing the number of molecules of the solute

None of these

Decreasing the temperature

Increasing the volume

Page 3 of 3

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

Freezing point

Lowering of vapour pressure

Elevation of polling point

Osmotic pressure

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

Lowering in b.pt.

Lowering in freezing pt

Reducing specific heat

Reducing viscosity

53. Isotonic solutions have same

Normality

None of these

Molar concentration

Molality

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

All of these

Non-electrolyte solute

Dilute solution

Non-volatile solute

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

Reducing viscosity

Reducing specific heat

Lowering in freezing point

Lowering in B.P

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

KCl

Glucose

Urea

CaCl₂

57. 10ml of alcohol dissolve in 90ml of water unit of concentration used is

% w/w

% w/v

% v/v

% v/w

58. Which inorganic precipitate acts as semipermeable membrane?

Calcium sulphate

Barium oxalate

Nickel phosphate

Copper ferrocyanide

59. Which of the following is a colligative property?

Melting point

Sublimation temperature

Osmotic pressure

Freezing point

60. Beckmann’s apparatus is used to measure

Pressure

Temperature

Depression in F.P

B.P elevation

61. Units of molarity are

Mol/lit

None

Kg/lit

Gm/lit

62. The liquid pair which is not completely miscible

CH₃OH and water

Phenol and water

Benzene and toluene

Alcohol and water

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

Elevation of boiling point

Lowering of vapour pressure

Freezing point

Osmatic pressure

64. 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

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 A to that of B take place

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Maan AliLast Updated: April 19, 2025

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ECAT Chemistry Solutions Online Test

Chemistry Solutions MCQS Online Test

ECAT Chemistry Solutions Chapter Online Test

ECAT Chemistry Solutions Test

Chemistry

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Chemistry Solutions MCQS Online Test

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