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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. Solution of Na2SO4 will be

Acidic

Basic

More acidic

Neutral

2. 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

0.600 eq

3.60 eq

2.40 eq

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

Saturated

Unsaturated

Supersaturated

None of these

4. Which is not a colligative property?

Elevation of boiling point

Osmotic pressure

Depression of freezing point

Lowering of vapour pressure

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

Solute non-electrolyte

All

Volatile solute

Dilute solution

6. 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

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

Unsaturated solution

Dilute solution

Super saturated solution

Saturated solution

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

Solution

Ion

Compound

Radical

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

Phase

Solute

Solvent

Solution

10. 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

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

Amorphous

Ideal

Super saturated

Azeotropic mixture

12. The osmotic pressure of solution increases if

Volume is increased

Number of solute molecules are increased

Temperature is decreased

Solution constant is increased

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

Electrophoresis

Electrolysis

Osmosis

Cataphoresis

14. The solution which distils over with change in composition

Non-ideal solution

Azeotropic solution

Zeotropic solution

Ideal solution

15. The concentration units independent of temperature would be

Mass-volume percent

Molarity

Molality

Normality

16. The process of osmosis was first discovered by

Dutrochet

Nollet

Traube

Pfeffer

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

Non-electrolyte solute

Dilute solution

All of these

Non-volatile solute

18. 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

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

Hydrates

Complexes

Double salts

Coordinate compounds

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

Dilute

All of these

Saturated solution

Concentrated

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

Ion

Phase

Solute

Solvent

22. 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

23. Units of molarity are

Mol/lit

Kg/lit

None

Gm/lit

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

Zeotropic solution

Ideal solution

Non-ideal solution

Azeotropic solution

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

Reducing specific heat

Lowering in freezing pt

Lowering in b.pt.

Reducing viscosity

Page 2 of 3

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

Molarity

Mole fraction

Formality

Molality

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

Acetone – chloroform

Water – hydrochloric acid

Water – nitric acid

Benzene – methanol

28. Which inorganic precipitate acts as semipermeable membrane?

Nickel phosphate

Barium oxalate

Calcium sulphate

Copper ferrocyanide

29. Which of the following is a colligative property?

Freezing point

Sublimation temperature

Osmotic pressure

Melting point

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

Mole fraction of solute

Molality

Molarity

Mole fraction of Solvent

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

CaCl₂

KCl

Glucose

Urea

32. The molal depression constant depends upon

Nature of solvent

Nature of solute

Vapour pressure of solution

∆H

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

Mole fraction

Normality

Molarity

Molality

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

Pressure of the atmosphere

More fraction of solvent

Molecular weight of the solvent

The mole fraction of Solute

35. Beckmann’s apparatus is used to measure

Temperature

Pressure

B.P elevation

Depression in F.P

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

None of these

1 Molar solution

1 normal solution

1 mole solution

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

Temperature

Surface area of the container

Nature of non ovolatile

Amount of liquid

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

Mole fraction

Molarity

Molality

All

39. Saturated solution of NaCl on heating becomes

Remains saturated

Unsaturated

Super saturated

None

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

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 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

41. Which one will from an ideal solution?

CHCI₃ and CH₃COOCH₃

C₂H₅OH and H₂O

H₂O and HBr.

C₆H₆ and CCI₄

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

Modification of refractive index

Elevation of boiling point

Depression in freezing pint

Osmotic pressure

43. 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 is saturated

It show positive deviation from Rault’s law

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

C₆H₆ and CCI₄

CHCI₃ and CH₃ 100 CH₃

C₂H₅OH and H₂O

H₂O and HBr.

45. Isotonic solutions have same

Molar concentration

None of these

Molality

Normality

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

Solution

Solvent

Solute

Solvation

47. The lowest vapour pressure is exerted by

Methanol

Ethanol

Chloroform

Water

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

Paints

Fog

Dust particles in smoke

Opals

49. Which has the minimum freezing point?

One molal urea solution

One molal CaCI₂

One Molal NaCl

One molal KCl Solution

50. Maximum F.P falls in

Water

Benzene

Naphthalene

Camphor

Page 3 of 3

51. 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 B.P

Lowering in freezing point

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

Freezing point

Lowering of vapour pressure

Elevation of polling point

Osmotic pressure

53. 10ml of alcohol dissolve in 90ml of water unit of concentration used is

% v/v

% w/v

% v/w

% w/w

54. 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

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

Elevation of boiling point

Depression of freezing point

Density

Osmotic pressure

56. Depression in freezing point is directly to

Molarity of solvent

Molality of solvent

Molality of solution

Molarity of solution

57. 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

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

+1.86°C

-3.72°C

-1.86°C

+3.72°C

59. The liquid pair which is not completely miscible

Phenol and water

Benzene and toluene

Alcohol and water

CH₃OH and water

60. A solution of two components is called

Binary solution

Dilute solution

Standard solution

Original solution

61. Osmotic pressure of a solution increases by

None of these

Increasing the volume

Increasing the number of molecules of the solute

Decreasing the temperature

62. 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

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

Osmatic pressure

Elevation of boiling point

Freezing point

Lowering of vapour pressure

64. The molal depression constant depends upon

Nature of solvent

Vapour pressure of solution

Nature of solute

∆H solution

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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

ECAT Chemistry Solutions Chapter Online Test

ECAT Chemistry Solutions Test

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