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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 dried paper containing pattern on paper is called

Chromophore

Chromatogram

Chrome

Chromatograph

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

Accurate

Time consuming

Fast

Difficult

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

The filter paper should be small

The tip of funnel should not touch the beaker

The stem of the funnel should be small

The stem of the funnel should remain continuously full of liquids

4. Sintered crucible is made up of

Porcelain

Glass

Filer

Plastic

5. Paper chromatography is a type

Absorption chromatography

Partition chromatography

None

Adsorption chromatography

6. The conversion of vapors directly into solid is called

Condensation

None

Sublimation

Freezing

7. Condensed solid produced during sublimation is

Sublimate

Crystal

Insoluble

Residue

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

Identification

Calculation

Measurement

Separation

9. During the process of crystallization the hot saturated solution

Evaporated to get the crystals of the product

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

Cooled very slowly to get large sized crystals

Cooled at a moderate rate to get medium sized crystals

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

None

Oven

Filter paper

Desicator

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

Law of mass action

The amount of solvent used

Distribution law

The amount of solute

12. The crystals are drying through a

Vacuum desiccator

Vacuum pump

None

Direct providing heat

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

Filtering cold solution

Quick filtration

Filtering hot saturated solution using hot funnel

Filling warm solution

14. 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

15. Safe and reliable method of drying crystal in through

Pressing it between folds of filter paper

Vacuum desiccator

Evaporation of solution

Drying it in oven

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

A solid compound is purified

It keeps the stem of funnel full of liquid

It is used to separate organic compounds from water

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

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

It should react chemically with the solute

Impurities should crystallize along with the solute

Should be expensive

Should be safe to use

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

Water bath

Wire gauze

Thermostat

Ice bath

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

Filtration

Condensation

Separation

Crystallization

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

Partition chromatography

Absorption chromatography

None

Adsorption chromatography

21. A process controlled by distribution law is

Sublimation

Filtration

Crystallization

Solvent extraction

22. Chromatography is important in

Qualitative analysis

Determination of purity

Quantitative analysis

All of these

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

Sublimation

Chromatography

Solvent extraction

Filtration

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

Sand and broken pieces of glass

Sand and Nacl

Sand and naphthalene

Nacl and Kcl

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

Filtration

Sublimation

Crystallization

Chromatography

Page 2 of 3

26. Solvent extraction method is used for compounds which are

Both A and B

None

Thermally unstable

Volatile

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

Chromatogram

Base line

Solvent front

Event

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

Condensing

Sublimation

Melting

Decomposing

29. After filtration slow cooling yields

Bigger & impure crystals

Bigger & pure crystals

Smaller & impure

Smaller & pure

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

Ordinary filter paper

Fluted filter

Under suction crucible

Fine filter paper

31. CaC1₂ ad P₂O₅ are used as

Reside agents

Deleting agents

Drying agents

Crystallizing agents

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

Distribution law

Distribution coefficient

Low partial pressures

Boiling point of solvent

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

Solvent extraction

Filtration

Chromatography

Crystallization

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

Acetic acid

Ethanol

Carbon tetrachloride

Chloroform

35. Examples of sublimate does not include

Naphthalene

Iodine

Ammonium salts

Nitrates

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

Needed

Depends on temperature

Crystallization does not involve heating

Avoided

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

Chromatography

Sublimation

Formation of solution and evaporation

Formation of solution and filtration

38. Iodine-salt mixture can be separated through

Simple distillation

Fractional distillation

Simple filtration

Sublimation

39. The technique of chromatography is used in

Isolation

Purification

All

Separation

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

If the paper fits tightly

If the paper has got small sized pores in it

If the paper covers the funnel up to its circumference

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

41. The most common example of solvent extraction is

Acetone

Ether

Naphthalene

Chloroform

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

80⁰

180⁰

90⁰

60⁰

43. 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

44. Which type of chromatography has fixed phase

None of these

Gas

Partition

Absorption

45. 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

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

Rf values of solutes

Temperature of the experiment

Size of the chromatographic tank used

The size of paper used

47. Gooch crucible is used to filter the solution of

KMnO4

Under suction crucible

KOH

K2Cr2O7

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

KBr

NaC1

KC1

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

It should deposit well-formed crystals of the pure compound

For preparation of chemical compound

Quick filtration can be done

It dissolves a large amount of the substance

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

Non – volatile or thermally stable

Volatile or thermally stable

Volatile or thermally unstable

Non – volatile or thermally unstable

Page 3 of 3

51. Which one is not the drying agent

CaOCl

Phosphorus penta-oxide

Silica gel

Cacl₂

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

Non-volatile or thermally unstable

Volatile or thermally stable

Nonvolatile or thermally stable

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

Distribution law

Law of mass action

Amount of solute used

Amount of solute

54. One of the following does not sublime

NH₄Cl

Naphthalene

Wax

Iodine

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

Mud

Residue

Steel

Crystal

56. Sintered glass crucible is used for

To avoid premature crystallization of solute

Purification of slid

Convenient filtration than that by Gooch crucible

Separation of two miscible liquids

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

Solvent extraction

Boiling

Sublimation

Filtration

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

Distribution coefficients

Law of specific proportion

Distribution law

Law of partial pressure

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

High ignition temperature

Low temperature

High solubility

High concentration

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

Nature of filter paper

Nature of reactants

Nature of precipitate

Nature of reaction

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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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