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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

K2Cr2O7

Under suction crucible

KMnO4

KOH

2. CaC1₂ ad P₂O₅ are used as

Drying agents

Deleting agents

Reside agents

Crystallizing agents

3. The process of filtration is used to

Separate the two miscible liquids

Separate the two immiscible liquids

Separate solute from solution

Separate insoluble particles from liquids

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

Carbon tetrachloride

Acetic acid

Ethanol

Chloroform

5. A process controlled by distribution law is

Solvent extraction

Sublimation

Crystallization

Filtration

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

Non-volatile or thermally unstable

Volatile or thermally stable

Non-volatile or thermally unstable

Nonvolatile or thermally stable

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

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

The tip of funnel should not touch the beaker

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

Low temperature

High ignition temperature

High concentration

High solubility

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

Sand and Nacl

Sand and naphthalene

Nacl and Kcl

Sand and broken pieces of glass

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

The amount of solute

Distribution law

The amount of solvent used

Law of mass action

11. After filtration slow cooling yields

Bigger & pure crystals

Bigger & impure crystals

Smaller & impure

Smaller & pure

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

Water bath

Wire gauze

Thermostat

Ice bath

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

Sublimation

Filtration

Solvent extraction

Boiling

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

Residue

Steel

Mud

Crystal

15. Which type of chromatography has fixed phase

Absorption

None of these

Partition

Gas

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

Impurities should crystallize along with the solute

Should be expensive

It should react chemically with the solute

Should be safe to use

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

Separation

Measurement

Identification

Calculation

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

Evaporation

Sublimation

Crystallization

Decomposition

19. Sintered crucible is made up of

Filer

Plastic

Glass

Porcelain

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

Distribution coefficient

Low partial pressures

Boiling point of solvent

Distribution law

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

Filtration

Chromatography

Sublimation

Solvent extraction

22. Solvent extraction method is used for compounds which are

Volatile

None

Both A and B

Thermally unstable

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

Distribution coefficients

Law of partial pressure

Law of specific proportion

Distribution law

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

Filtering hot saturated solution using hot funnel

Quick filtration

Filling warm solution

Filtering cold solution

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

Fluted filter

Fine filter paper

Ordinary filter paper

Under suction crucible

Page 2 of 3

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

Used

Their partition coefficients

The size of paper used

Their Rf values

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

KC1

NaC1

KBr

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

Needed

Depends on temperature

Crystallization does not involve heating

Avoided

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

Nature of reaction

Nature of filter paper

Nature of reactants

Nature of precipitate

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

None

Absorption chromatography

Partition chromatography

Adsorption chromatography

31. The conversion of vapors directly into solid is called

Freezing

Sublimation

None

Condensation

32. Which one is not the drying agent

CaOCl

Silica gel

Cacl₂

Phosphorus penta-oxide

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

Chromatography

Crystallization

Filtration

Sublimation

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

Sublimation

Decomposing

Melting

Condensing

35. Chromatography is important in

Quantitative analysis

All of these

Qualitative analysis

Determination of purity

36. During the process of crystallization the hot saturated solution

Cooled very slowly to get large sized crystals

Cooled at a moderate rate to get medium sized crystals

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

Evaporated to get the crystals of the product

37. 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

38. Iodine-salt mixture can be separated through

Simple filtration

Simple distillation

Sublimation

Fractional distillation

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

Amount of solute used

Law of mass action

Distribution law

Amount of solute

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

If the paper covers the funnel up to its circumference

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

Rf values of solutes

Size of the chromatographic tank used

Temperature of the experiment

The size of paper used

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

Chromatogram

Event

Base line

Solvent front

43. The dried paper containing pattern on paper is called

Chrome

Chromophore

Chromatogram

Chromatograph

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

Non – volatile or thermally unstable

Volatile or thermally stable

Non – volatile or thermally stable

Volatile or thermally unstable

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

Formation of solution and evaporation

Sublimation

Formation of solution and filtration

Chromatography

46. The most common example of solvent extraction is

Acetone

Chloroform

Ether

Naphthalene

47. Condensed solid produced during sublimation is

Residue

Crystal

Sublimate

Insoluble

48. One of the following does not sublime

Naphthalene

NH₄Cl

Iodine

Wax

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

It is used to separate organic compounds from water

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

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

Crystallization

Filtration

Separation

Condensation

Page 3 of 3

51. Paper chromatography is a type

Absorption chromatography

Adsorption chromatography

None

Partition chromatography

52. Examples of sublimate does not include

Ammonium salts

Iodine

Nitrates

Naphthalene

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

Filter paper

Oven

Desicator

None

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

Difficult

Accurate

Time consuming

Fast

55. 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

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

For preparation of chemical compound

It should deposit well-formed crystals of the pure compound

It dissolves a large amount of the substance

Quick filtration can be done

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

180⁰

60⁰

90⁰

80⁰

58. The technique of chromatography is used in

Isolation

Purification

Separation

All

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

Chromatography

Filtration

Solvent extraction

Crystallization

60. The crystals are drying through a

Vacuum pump

None

Direct providing heat

Vacuum desiccator

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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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