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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.
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MDCAT Chemistry Experimental Techniques Test

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Page 1 of 3

Chemistry

1. Chromatography is important in

All of these

Determination of purity

Qualitative analysis

Quantitative analysis

2. 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 stable

Non – volatile or thermally unstable

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

Filter paper

None

Oven

Desicator

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

For preparation of chemical compound

Quick filtration can be done

It should deposit well-formed crystals of the pure compound

It dissolves a large amount of the substance

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

Separation

Filtration

Condensation

Crystallization

6. The dried paper containing pattern on paper is called

Chrome

Chromophore

Chromatogram

Chromatograph

7. 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

8. Condensed solid produced during sublimation is

Insoluble

Residue

Crystal

Sublimate

9. Which type of chromatography has fixed phase

Gas

Partition

None of these

Absorption

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

Mud

Steel

Crystal

Residue

11. 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 has got small sized pores in it

If the paper fits tightly

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

Impurities should crystallize along with the solute

Should be expensive

Should be safe to use

It should react chemically with the solute

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

Rf values of solutes

The size of paper used

Temperature of the experiment

Size of the chromatographic tank used

14. The crystals are drying through a

Vacuum pump

None

Direct providing heat

Vacuum desiccator

15. The process of filtration is used to

Separate the two miscible liquids

Separate solute from solution

Separate insoluble particles from liquids

Separate the two immiscible liquids

16. The most common example of solvent extraction is

Naphthalene

Chloroform

Ether

Acetone

17. 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 tip of funnel should not touch the beaker

The filter paper should be small

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

Sublimation

Filtration

Solvent extraction

Boiling

19. Solvent extraction method is used for compounds which are

None

Thermally unstable

Volatile

Both A and B

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

Ice bath

Wire gauze

Thermostat

Water bath

21. After filtration slow cooling yields

Smaller & pure

Smaller & impure

Bigger & impure crystals

Bigger & pure crystals

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

Filtering hot saturated solution using hot funnel

Filtering cold solution

Quick filtration

Filling warm solution

23. The conversion of vapors directly into solid is called

Condensation

Freezing

None

Sublimation

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

Time consuming

Accurate

Difficult

Fast

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

NaC1

KBr

KC1

Page 2 of 3

26. Examples of sublimate does not include

Nitrates

Iodine

Ammonium salts

Naphthalene

27. Sintered crucible is made up of

Plastic

Filer

Glass

Porcelain

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

80⁰

60⁰

90⁰

180⁰

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

Amount of solute

Law of mass action

Amount of solute used

Distribution law

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

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

It keeps the stem of funnel full of liquid

A solid compound is purified

It is used to separate organic compounds from water

31. During the process of crystallization the hot saturated solution

Cooled at a moderate rate to get medium sized crystals

Cooled very slowly to get large sized crystals

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

Evaporated to get the crystals of the product

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

Depends on temperature

Crystallization does not involve heating

Avoided

Needed

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

Sand and Nacl

Nacl and Kcl

Sand and broken pieces of glass

Sand and naphthalene

34. The technique of chromatography is used in

All

Separation

Purification

Isolation

35. Gooch crucible is used to filter the solution of

KMnO4

K2Cr2O7

KOH

Under suction crucible

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

Low temperature

High concentration

High ignition temperature

High solubility

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

Condensing

Melting

Sublimation

Decomposing

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

Measurement

Identification

Separation

Calculation

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

None

Partition chromatography

Adsorption chromatography

Absorption chromatography

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

Ethanol

Carbon tetrachloride

Chloroform

Acetic acid

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

Solvent front

Event

Base line

Chromatogram

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

Nature of reaction

Nature of reactants

Nature of filter paper

Nature of precipitate

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

Formation of solution and evaporation

Chromatography

Formation of solution and filtration

Sublimation

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

Ordinary filter paper

Fine filter paper

Fluted filter

Under suction crucible

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

Filtration

Chromatography

Crystallization

Solvent extraction

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

Filtration

Sublimation

Solvent extraction

Chromatography

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

Filtration

Chromatography

Crystallization

Sublimation

48. Which one is not the drying agent

Silica gel

Phosphorus penta-oxide

Cacl₂

CaOCl

49. One of the following does not sublime

Naphthalene

Wax

NH₄Cl

Iodine

50. Sintered glass crucible is used for

Purification of slid

Convenient filtration than that by Gooch crucible

Separation of two miscible liquids

To avoid premature crystallization of solute

Page 3 of 3

51. CaC1₂ ad P₂O₅ are used as

Crystallizing agents

Deleting agents

Reside agents

Drying agents

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

Low partial pressures

Boiling point of solvent

Distribution coefficient

Distribution law

53. 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

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

Law of partial pressure

Law of specific proportion

Distribution coefficients

Distribution law

55. Paper chromatography is a type

Partition chromatography

Adsorption chromatography

None

Absorption chromatography

56. A process controlled by distribution law is

Crystallization

Sublimation

Solvent extraction

Filtration

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

Their partition coefficients

Used

Their Rf values

The size of paper used

58. Iodine-salt mixture can be separated through

Sublimation

Simple distillation

Fractional distillation

Simple filtration

59. Safe and reliable method of drying crystal in through

Vacuum desiccator

Evaporation of solution

Pressing it between folds of filter paper

Drying it in oven

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

Decomposition

Crystallization

Evaporation

Sublimation

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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

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