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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. Iodine-salt mixture can be separated through

Sublimation

Simple filtration

Simple distillation

Fractional distillation

2. Which type of chromatography has fixed phase

Partition

None of these

Absorption

Gas

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

Impurities should crystallize along with the solute

Should be safe to use

It should react chemically with the solute

Should be expensive

4. 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

5. The crystals are drying through a

Vacuum pump

None

Vacuum desiccator

Direct providing heat

6. After filtration slow cooling yields

Bigger & pure crystals

Smaller & impure

Smaller & pure

Bigger & impure crystals

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

Distribution law

Law of mass action

The amount of solvent used

The amount of solute

8. Condensed solid produced during sublimation is

Residue

Insoluble

Sublimate

Crystal

9. Sintered glass crucible is used for

Purification of slid

To avoid premature crystallization of solute

Separation of two miscible liquids

Convenient filtration than that by Gooch crucible

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

Amount of solute

Distribution law

Law of mass action

Amount of solute used

11. Which one is not the drying agent

Cacl₂

Silica gel

CaOCl

Phosphorus penta-oxide

12. 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

13. One of the following does not sublime

NH₄Cl

Naphthalene

Iodine

Wax

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

Sublimation

Crystallization

Chromatography

Filtration

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

Crystal

Steel

Residue

Mud

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

High solubility

Low temperature

High concentration

High ignition temperature

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

Filling warm solution

Filtering cold solution

Filtering hot saturated solution using hot funnel

Quick filtration

18. 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

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

Law of partial pressure

Law of specific proportion

Distribution coefficients

Distribution law

20. Paper chromatography is a type

None

Partition chromatography

Absorption chromatography

Adsorption chromatography

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

Solvent extraction

Boiling

Sublimation

Filtration

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

Solvent front

Base line

Chromatogram

Event

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

Nature of filter paper

Nature of reactants

Nature of reaction

Nature of precipitate

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

Distribution coefficient

Low partial pressures

Boiling point of solvent

Distribution law

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

Wire gauze

Ice bath

Thermostat

Water bath

Page 2 of 3

26. 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

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

Sublimation

Chromatography

Solvent extraction

Filtration

28. The dried paper containing pattern on paper is called

Chromophore

Chromatograph

Chromatogram

Chrome

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

If the paper has got small sized pores in it

If the paper fits tightly

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

30. CaC1₂ ad P₂O₅ are used as

Crystallizing agents

Reside agents

Drying agents

Deleting agents

31. The most common example of solvent extraction is

Naphthalene

Acetone

Ether

Chloroform

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

Ordinary filter paper

Fluted filter

Fine filter paper

Under suction crucible

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

Fast

Difficult

Time consuming

Accurate

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

Condensation

Crystallization

Separation

Filtration

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

Sand and naphthalene

Nacl and Kcl

Sand and broken pieces of glass

Sand and Nacl

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

Adsorption chromatography

None

Partition chromatography

Absorption chromatography

37. Solvent extraction method is used for compounds which are

Volatile

None

Both A and B

Thermally unstable

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

Desicator

Oven

Filter paper

None

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

Solvent extraction

Crystallization

Chromatography

Filtration

40. Sintered crucible is made up of

Porcelain

Plastic

Glass

Filer

41. Chromatography is important in

Qualitative analysis

All of these

Quantitative analysis

Determination of purity

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

It should deposit well-formed crystals of the pure compound

It dissolves a large amount of the substance

For preparation of chemical compound

Quick filtration can be done

43. The conversion of vapors directly into solid is called

Sublimation

Condensation

None

Freezing

44. A process controlled by distribution law is

Sublimation

Crystallization

Solvent extraction

Filtration

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

Ethanol

Chloroform

Carbon tetrachloride

Acetic acid

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

Non-volatile or thermally unstable

Nonvolatile or thermally stable

Volatile or thermally stable

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

Their partition coefficients

Their Rf values

The size of paper used

Used

48. Examples of sublimate does not include

Iodine

Ammonium salts

Naphthalene

Nitrates

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

Depends on temperature

Crystallization does not involve heating

Avoided

Needed

50. Gooch crucible is used to filter the solution of

KOH

KMnO4

K2Cr2O7

Under suction crucible

Page 3 of 3

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

Temperature of the experiment

The size of paper used

Size of the chromatographic tank used

Rf values of solutes

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

Decomposing

Sublimation

Melting

Condensing

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

Sublimation

Formation of solution and evaporation

Formation of solution and filtration

Chromatography

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

The stem of the funnel should be small

The stem of the funnel should remain continuously full of liquids

The filter paper should be small

The tip of funnel should not touch the beaker

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

KC1

NaC1

KBr

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

Sublimation

Decomposition

Crystallization

Evaporation

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

Calculation

Identification

Measurement

Separation

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

60⁰

80⁰

90⁰

180⁰

59. 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

60. The technique of chromatography is used in

Purification

Isolation

All

Separation

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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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