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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

Distribution law

Boiling point of solvent

Distribution coefficient

Low partial pressures

2. 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

3. 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

4. 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

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

Separation

Calculation

Measurement

Identification

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

Nature of reaction

Nature of filter paper

Nature of precipitate

Nature of reactants

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

Ordinary filter paper

Under suction crucible

Fluted filter

Fine filter paper

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

Should be safe to use

Should be expensive

Impurities should crystallize along with the solute

It should react chemically with the solute

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

Volatile or thermally unstable

Non – volatile or thermally stable

Non – volatile or thermally unstable

Volatile or thermally stable

10. Solvent extraction method is used for compounds which are

Volatile

None

Both A and B

Thermally unstable

11. Gooch crucible is used to filter the solution of

KMnO4

Under suction crucible

KOH

K2Cr2O7

12. Condensed solid produced during sublimation is

Insoluble

Crystal

Residue

Sublimate

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

Filtration

Crystallization

Chromatography

Sublimation

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

A solid compound is purified

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

It keeps the stem of funnel full of liquid

It is used to separate organic compounds from water

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

Water bath

Wire gauze

Ice bath

Thermostat

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

Amount of solute

Law of mass action

Amount of solute used

Distribution law

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

Chromatogram

Base line

Solvent front

Event

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

Low temperature

High solubility

High ignition temperature

High concentration

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

Filtration

Sublimation

Boiling

Solvent extraction

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

Absorption chromatography

Adsorption chromatography

None

Partition chromatography

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

Separation

Crystallization

Condensation

Filtration

22. The crystals are drying through a

Vacuum desiccator

Vacuum pump

None

Direct providing heat

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

Steel

Mud

Crystal

Residue

24. Examples of sublimate does not include

Nitrates

Ammonium salts

Naphthalene

Iodine

25. Iodine-salt mixture can be separated through

Sublimation

Fractional distillation

Simple distillation

Simple filtration

Page 2 of 3

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

Sublimation

Formation of solution and filtration

Chromatography

Formation of solution and evaporation

27. One of the following does not sublime

NH₄Cl

Wax

Naphthalene

Iodine

28. Chromatography is important in

All of these

Quantitative analysis

Qualitative analysis

Determination of purity

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

Acetic acid

Chloroform

Ethanol

Carbon tetrachloride

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

Difficult

Time consuming

Fast

Accurate

31. 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

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

Melting

Condensing

Sublimation

Decomposing

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

Decomposition

Sublimation

Crystallization

Evaporation

34. Paper chromatography is a type

Adsorption chromatography

None

Absorption chromatography

Partition chromatography

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

Avoided

Crystallization does not involve heating

Depends on temperature

Needed

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

Desicator

Filter paper

None

Oven

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

Crystallization

Solvent extraction

Chromatography

Filtration

38. 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

39. Which one is not the drying agent

Silica gel

Phosphorus penta-oxide

CaOCl

Cacl₂

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

Used

Their partition coefficients

Their Rf values

The size of paper used

41. The most common example of solvent extraction is

Acetone

Naphthalene

Chloroform

Ether

42. The dried paper containing pattern on paper is called

Chromophore

Chrome

Chromatograph

Chromatogram

43. After filtration slow cooling yields

Smaller & pure

Bigger & impure crystals

Bigger & pure crystals

Smaller & impure

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

The tip of funnel should not touch the beaker

The stem of the funnel should remain continuously full of liquids

The filter paper should be small

The stem of the funnel should be small

45. CaC1₂ ad P₂O₅ are used as

Deleting agents

Reside agents

Drying agents

Crystallizing agents

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

Solvent extraction

Sublimation

Chromatography

Filtration

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

Distribution law

Law of partial pressure

Distribution coefficients

Law of specific proportion

48. A process controlled by distribution law is

Solvent extraction

Sublimation

Crystallization

Filtration

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

NaC1

KBr

KC1

50. 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

Page 3 of 3

51. 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

52. The technique of chromatography is used in

Separation

Purification

Isolation

All

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

60⁰

180⁰

80⁰

90⁰

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

The size of paper used

Temperature of the experiment

Size of the chromatographic tank used

Rf values of solutes

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

Distribution law

The amount of solute

The amount of solvent used

Law of mass action

56. Which type of chromatography has fixed phase

Absorption

Partition

None of these

Gas

57. 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

58. During the process of crystallization the hot saturated solution

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

Evaporated to get the crystals of the product

Cooled very slowly to get large sized crystals

Cooled at a moderate rate to get medium sized crystals

59. Sintered crucible is made up of

Porcelain

Filer

Plastic

Glass

60. The conversion of vapors directly into solid is called

Condensation

Sublimation

None

Freezing

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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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