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MDCAT Chemistry Experimental Techniques Online Test

Malik TahirLast Updated: May 24, 2025

Chemistry Experimental Techniques MCQS Online Test

MDCAT Chemistry Experimental Techniques Chapter Online Test

Total Questions:	60
Time Allowed:	30 Minutes
Total Marks:	60
How to Attempt Test:	Please choose the right Option in MCQ-type question.
Test Helpful For:	MDCAT Entry Test Chemistry Online Test Interview Questions about Chemisttry All Universities Entrance Test Recruitments Tests

MDCAT Chemistry Experimental Techniques Test

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Page 1 of 3

Chemistry

1. The rate at which the solute moves in paper chromatography depends upon

Boiling point of solvent

Distribution coefficient

Low partial pressures

Distribution law

2. Aqueous solution of iodine is prepared first by dissolving which compound in water

KBr

KC1

NaC1

3. Which of the following process is used to separate insoluble particles from liquids?

Condensation

Filtration

Separation

Crystallization

4. The process involves converting a solid directly into vapors and these vapors are the condensed to form solid again is called

Evaporation

Crystallization

Sublimation

Decomposition

5. The iodine present in water can be separated by which one of the following techniques

Filtration

Sublimation

Solvent extraction

Chromatography

6. Solvent extraction is an equilibrium process and it is controlled by

Law of mass action

The amount of solute

Distribution law

The amount of solvent used

7. Sintered glass crucible is used for

To avoid premature crystallization of solute

Convenient filtration than that by Gooch crucible

Separation of two miscible liquids

Purification of slid

8. In crystallization, if the solvent is inflammable then direct heating is

Crystallization does not involve heating

Avoided

Depends on temperature

Needed

9. For smooth filtration one of the following precautions should be observed

The filter paper should be small

The stem of the funnel should be small

The tip of funnel should not touch the beaker

The stem of the funnel should remain continuously full of liquids

10. Premature crystallization of solution of filter paper or in funnel can be avoided

Filling warm solution

Filtering hot saturated solution using hot funnel

Filtering cold solution

Quick filtration

11. Chromatography in which the stationary phase is liquid is called

Absorption chromatography

Partition chromatography

None

Adsorption chromatography

12. The comparative rates at which the solutes move in paper chromatography depend on

Size of the chromatographic tank used

The size of paper used

Rf values of solutes

Temperature of the experiment

13. Chromatography is important in

Quantitative analysis

All of these

Qualitative analysis

Determination of purity

14. Paper chromatography is a type

Adsorption chromatography

Absorption chromatography

Partition chromatography

None

15. Iodine-salt mixture can be separated through

Sublimation

Simple distillation

Fractional distillation

Simple filtration

16. Which one is not the drying agent

Phosphorus penta-oxide

CaOCl

Cacl₂

Silica gel

17. Sintered crucible is made up of

Plastic

Porcelain

Filer

Glass

18. Which type of chromatography has fixed phase

Gas

None of these

Absorption

Partition

19. Condensed solid produced during sublimation is

Insoluble

Crystal

Residue

Sublimate

20. Safe and reliable method of drying crystal in through

Drying it in oven

Vacuum desiccator

Evaporation of solution

Pressing it between folds of filter paper

21. Examples of sublimate does not include

Naphthalene

Nitrates

Iodine

Ammonium salts

22. The process of filtration is used to

Separate the two miscible liquids

Separate the two immiscible liquids

Separate insoluble particles from liquids

Separate solute from solution

23. After filtration slow cooling yields

Bigger & impure crystals

Smaller & impure

Bigger & pure crystals

Smaller & pure

24. An insoluble solid can be separated from a liquid by

Chromatography

Sublimation

Filtration

Crystallization

25. I₂ present in water can be extracted by using which of the following solvent

Carbon tetrachloride

Chloroform

Acetic acid

Ethanol

Page 2 of 3

26. Which of the following is not a separation technique?

Boiling

Sublimation

Filtration

Solvent extraction

27. Gooch crucible is used in a suction filtering apparatus, because

It is used to separate organic compounds from water

It keeps the stem of funnel full of liquid

A solid compound is purified

It is used for filtration of precipitates which need to be ignited

28. Solvent extraction is an equilibrium process and it is controlled by

Law of mass action

Amount of solute

Distribution law

Amount of solute used

29. Which of the following technique is used for the separation of insoluble particles from liquids?

Chromatography

Crystallization

Solvent extraction

Filtration

30. Gooch crucible is used for the filtration of precipitates having

High ignition temperature

High concentration

Low temperature

High solubility

31. Solvent extraction method is used for compounds which are

Thermally unstable

None

Both A and B

Volatile

32. One of the following does not sublime

Wax

Iodine

Naphthalene

NH₄Cl

33. The dried paper containing pattern on paper is called

Chromophore

Chrome

Chromatogram

Chromatograph

34. In paper chromatography the rate at which solutes move depends on

Law of partial pressure

Law of specific proportion

Distribution law

Distribution coefficients

35. The technique of chromatography is used in

Isolation

Separation

Purification

All

36. Safe and most reliable method of drying the crystals is

Desicator

None

Filter paper

Oven

37. During the folding of filter paper the apex form angle of about

180⁰

90⁰

80⁰

60⁰

38. Several types of filter media are used for filtration depending on

Nature of reactants

Nature of filter paper

Nature of precipitate

Nature of reaction

39. The crystals are drying through a

Direct providing heat

Vacuum desiccator

Vacuum pump

None

40. A process controlled by distribution law is

Sublimation

Solvent extraction

Crystallization

Filtration

41. A filtration process could be very time consuming if it were not aided by the gentle suction, which is developed

If the paper covers the funnel up to its circumference

If the paper has got small sized pores in it

If the stem of the funnel is large so that it dips into the filtrate

If the paper fits tightly

42. Solvent extraction method is particularly useful technique for separation when the product to be separated is

Volatile or thermally unstable

Volatile or thermally stable

Non – volatile or thermally unstable

Non – volatile or thermally stable

43. Rate of filtration through conical funnel can be considerably increased by using

Fluted filter

Fine filter paper

Ordinary filter paper

Under suction crucible

44. Filtration through Gooch and sintered glass crucibles is aided by a gentle suction

It dissolves a large amount of the substance

Quick filtration can be done

For preparation of chemical compound

It should deposit well-formed crystals of the pure compound

45. The conversion of vapors directly into solid is called

None

Condensation

Sublimation

Freezing

46. During the process of crystallization the hot saturated solution

Cooled very slowly to get large sized crystals

Mixed with an miscible liquid to get the pure crystals of the product

Cooled at a moderate rate to get medium sized crystals

Evaporated to get the crystals of the product

47. Which pairs of the following components can be separated by sublimation?

Sand and broken pieces of glass

Nacl and Kcl

Sand and Nacl

Sand and naphthalene

48. If the solvent is inflammable for heating purpose we use

Wire gauze

Thermostat

Water bath

Ice bath

49. Solvent extraction method is particularly useful technique for separation, when product to be separated is

Volatile or thermally stable

Non-volatile or thermally unstable

Nonvolatile or thermally stable

Non-volatile or thermally unstable

50. The most common example of solvent extraction is

Acetone

Ether

Chloroform

Naphthalene

Page 3 of 3

51. Which of the following is directly related to Qualitative analysis?

Calculation

Separation

Measurement

Identification

52. Which one of the following techniques can be used to separate NaC1 and sand?

Sublimation

Chromatography

Formation of solution and filtration

Formation of solution and evaporation

53. A comparative rates at which the solutes move in the paper chromatography depends on

Used

Their partition coefficients

The size of paper used

Their Rf values

54. In paper chromatography the point at which the solvent rises to maximum extent is called

Event

Base line

Solvent front

Chromatogram

55. Filtration by a glass funnel and filter paper is very

Time consuming

Difficult

Accurate

Fast

56. Which one is the property of an ideal solvent?

Should be expensive

Impurities should crystallize along with the solute

Should be safe to use

It should react chemically with the solute

57. CaC1₂ ad P₂O₅ are used as

Drying agents

Crystallizing agents

Deleting agents

Reside agents

58. Gooch crucible is used to filter the solution of

KMnO4

Under suction crucible

KOH

K2Cr2O7

59. The solid which is left over the filter paper is called

Mud

Steel

Residue

Crystal

60. When a solid which has high vapor pressure at a temperature below its boiling point, is heated it starts:

Sublimation

Decomposing

Melting

Condensing

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Malik TahirLast Updated: May 24, 2025

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MDCAT Chemistry Experimental Techniques Online Test

Chemistry Experimental Techniques MCQS Online Test

MDCAT Chemistry Experimental Techniques Chapter Online Test

MDCAT Chemistry Experimental Techniques Test

Chemistry

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Malik Tahir

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Chemistry Experimental Techniques MCQS Online Test

MDCAT Chemistry Experimental Techniques Chapter Online Test

MDCAT Chemistry Experimental Techniques Test

Chemistry

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Malik Tahir

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