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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. Gooch crucible is used to filter the solution of

KOH

Under suction crucible

K2Cr2O7

KMnO4

2. After filtration slow cooling yields

Smaller & pure

Bigger & pure crystals

Smaller & impure

Bigger & impure crystals

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

Fast

Accurate

Time consuming

Difficult

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

Sublimation

Chromatography

Formation of solution and evaporation

Formation of solution and filtration

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

Carbon tetrachloride

Ethanol

Acetic acid

Chloroform

6. Safe and reliable method of drying crystal in through

Drying it in oven

Pressing it between folds of filter paper

Evaporation of solution

Vacuum desiccator

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

Identification

Calculation

Separation

Measurement

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

Crystallization

Filtration

Separation

Condensation

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

Chromatography

Filtration

Solvent extraction

Crystallization

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

Chromatography

Crystallization

Filtration

Sublimation

11. Paper chromatography is a type

Adsorption chromatography

Absorption chromatography

None

Partition chromatography

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

Boiling

Solvent extraction

Sublimation

Filtration

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

Volatile or thermally stable

Volatile or thermally unstable

Non – volatile or thermally unstable

Non – volatile or thermally stable

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

NaC1

KBr

KC1

15. The process of filtration is used to

Separate solute from solution

Separate the two immiscible liquids

Separate insoluble particles from liquids

Separate the two miscible liquids

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

Crystallization does not involve heating

Avoided

Needed

Depends on temperature

17. Solvent extraction method is used for compounds which are

Both A and B

Volatile

None

Thermally unstable

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

Nonvolatile or thermally stable

Non-volatile or thermally unstable

Volatile or thermally stable

19. A process controlled by distribution law is

Filtration

Solvent extraction

Sublimation

Crystallization

20. The most common example of solvent extraction is

Ether

Chloroform

Acetone

Naphthalene

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

Amount of solute

Law of mass action

Distribution law

Amount of solute used

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

Low partial pressures

Distribution coefficient

Distribution law

Boiling point of solvent

23. Which one is not the drying agent

Silica gel

Cacl₂

CaOCl

Phosphorus penta-oxide

24. One of the following does not sublime

NH₄Cl

Iodine

Wax

Naphthalene

25. CaC1₂ ad P₂O₅ are used as

Drying agents

Crystallizing agents

Reside agents

Deleting agents

Page 2 of 3

26. Iodine-salt mixture can be separated through

Sublimation

Simple distillation

Fractional distillation

Simple filtration

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

Should be safe to use

Impurities should crystallize along with the solute

Should be expensive

It should react chemically with the solute

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

Nature of precipitate

Nature of reaction

Nature of reactants

Nature of filter paper

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

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

If the paper covers the funnel up to its circumference

If the paper fits tightly

If the paper has got small sized pores in it

30. Sintered crucible is made up of

Porcelain

Filer

Glass

Plastic

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

Mud

Residue

Crystal

Steel

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

Solvent extraction

Chromatography

Sublimation

Filtration

33. Condensed solid produced during sublimation is

Residue

Crystal

Sublimate

Insoluble

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

180⁰

60⁰

80⁰

90⁰

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

Sand and broken pieces of glass

Sand and Nacl

Nacl and Kcl

Sand and naphthalene

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

Quick filtration can be done

It should deposit well-formed crystals of the pure compound

For preparation of chemical compound

It dissolves a large amount of the substance

37. The conversion of vapors directly into solid is called

None

Condensation

Sublimation

Freezing

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

Adsorption chromatography

Partition chromatography

None

Absorption chromatography

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

Ordinary filter paper

Under suction crucible

Fluted filter

Fine filter paper

40. The dried paper containing pattern on paper is called

Chromatograph

Chromophore

Chrome

Chromatogram

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

A solid compound is purified

It is used to separate organic compounds from water

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

It keeps the stem of funnel full of liquid

42. The crystals are drying through a

Direct providing heat

None

Vacuum pump

Vacuum desiccator

43. During the process of crystallization the hot saturated solution

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

Cooled very slowly to get large sized crystals

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

High concentration

Low temperature

High ignition temperature

High solubility

45. Which type of chromatography has fixed phase

None of these

Partition

Absorption

Gas

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

None

Desicator

Oven

Filter paper

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

Solvent front

Event

Base line

Chromatogram

48. Examples of sublimate does not include

Nitrates

Ammonium salts

Naphthalene

Iodine

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

The stem of the funnel should remain continuously full of liquids

The stem of the funnel should be small

The tip of funnel should not touch the beaker

The filter paper should be small

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

Filtering cold solution

Filling warm solution

Filtering hot saturated solution using hot funnel

Quick filtration

Page 3 of 3

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

The size of paper used

Rf values of solutes

Temperature of the experiment

Size of the chromatographic tank used

52. Sintered glass crucible is used for

Separation of two miscible liquids

Purification of slid

Convenient filtration than that by Gooch crucible

To avoid premature crystallization of solute

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

Water bath

Wire gauze

Thermostat

Ice bath

54. The technique of chromatography is used in

Separation

Isolation

Purification

All

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

The amount of solvent used

Distribution law

Law of mass action

The amount of solute

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

Law of specific proportion

Law of partial pressure

Distribution coefficients

Distribution law

57. Chromatography is important in

Quantitative analysis

All of these

Qualitative analysis

Determination of purity

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

Crystallization

Evaporation

Sublimation

Decomposition

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

Their Rf values

Used

Their partition coefficients

The size of paper used

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

Condensing

Sublimation

Melting

Decomposing

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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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