Home/Chemistry Mcqs/Chemistry Experimental Techniques Online Mcqs Test

Chemistry Experimental Techniques Online Mcqs Test

Malik TahirLast Updated: October 14, 2025

Important Chemistry Experimental Techniques Question and Answer

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:	Chemistry Test ECAT Test MDCAT Test FPSC/PPSC/SPSC/KPPSC/BPSC/AJKPSC/NTS Chemistry Interview Question Answer

Chemistry Experimental Techniques Practice Test Online With Explanation

Please wait...

Page 1 of 3

Chemistry

1. The technique of chromatography is used in

Isolation

Purification

All

Separation

2. During the process of crystallization the hot saturated solution

Evaporated to get the crystals of the product

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

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

Chromatography

Filtration

Solvent extraction

Sublimation

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

Sublimation

Boiling

Filtration

Solvent extraction

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

Should be expensive

Should be safe to use

It should react chemically with the solute

Impurities should crystallize along with the solute

6. Sintered glass crucible is used for

To avoid premature crystallization of solute

Separation of two miscible liquids

Convenient filtration than that by Gooch crucible

Purification of slid

7. Iodine-salt mixture can be separated through

Fractional distillation

Simple filtration

Sublimation

Simple distillation

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

Distribution law

Boiling point of solvent

Distribution coefficient

Low partial pressures

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

80⁰

60⁰

180⁰

90⁰

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

Temperature of the experiment

Size of the chromatographic tank used

Rf values of solutes

The size of paper used

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

Quick filtration

Filtering hot saturated solution using hot funnel

Filtering cold solution

Filling warm solution

12. 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

13. A process controlled by distribution law is

Solvent extraction

Sublimation

Filtration

Crystallization

14. The crystals are drying through a

Direct providing heat

Vacuum desiccator

Vacuum pump

None

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

Water bath

Ice bath

Thermostat

Wire gauze

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

High ignition temperature

Low temperature

High concentration

High solubility

17. Gooch crucible is used to filter the solution of

KOH

K2Cr2O7

Under suction crucible

KMnO4

18. CaC1₂ ad P₂O₅ are used as

Reside agents

Crystallizing agents

Drying agents

Deleting agents

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

Non – volatile or thermally stable

Non – volatile or thermally unstable

Volatile or thermally stable

Volatile or thermally unstable

20. 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

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

Fast

Time consuming

Accurate

Difficult

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

Crystal

Mud

Residue

Steel

23. The dried paper containing pattern on paper is called

Chromophore

Chrome

Chromatogram

Chromatograph

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

Decomposing

Melting

Condensing

Sublimation

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

Distribution law

Law of partial pressure

Distribution coefficients

Law of specific proportion

Page 2 of 3

26. Which one is not the drying agent

Silica gel

CaOCl

Cacl₂

Phosphorus penta-oxide

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

Absorption chromatography

Partition chromatography

None

Adsorption chromatography

28. 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

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

Crystallization

Sublimation

Chromatography

Filtration

30. One of the following does not sublime

Wax

Iodine

NH₄Cl

Naphthalene

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

Filter paper

Oven

None

Desicator

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

Separation

Calculation

Identification

Measurement

33. After filtration slow cooling yields

Bigger & impure crystals

Bigger & pure crystals

Smaller & pure

Smaller & impure

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

Avoided

Depends on temperature

Needed

Crystallization does not involve heating

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

Chromatogram

Base line

Event

Solvent front

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

Separation

Condensation

Filtration

Crystallization

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

NaC1

KC1

KBr

38. 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

39. Which type of chromatography has fixed phase

Gas

Absorption

None of these

Partition

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

Sublimation

Crystallization

Decomposition

Evaporation

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

Nature of reactants

Nature of precipitate

Nature of filter paper

Nature of reaction

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

Crystallization

Filtration

Chromatography

Solvent extraction

43. 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

44. Chromatography is important in

Determination of purity

Quantitative analysis

All of these

Qualitative analysis

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

Their Rf values

Used

The size of paper used

Their partition coefficients

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

Law of mass action

The amount of solvent used

The amount of solute

Distribution law

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

It should deposit well-formed crystals of the pure compound

Quick filtration can be done

For preparation of chemical compound

It dissolves a large amount of the substance

48. 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

49. The process of filtration is used to

Separate insoluble particles from liquids

Separate solute from solution

Separate the two miscible liquids

Separate the two immiscible liquids

50. The most common example of solvent extraction is

Chloroform

Ether

Acetone

Naphthalene

Page 3 of 3

51. Paper chromatography is a type

Partition chromatography

Adsorption chromatography

None

Absorption chromatography

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

Fluted filter

Fine filter paper

Under suction crucible

Ordinary filter paper

53. The conversion of vapors directly into solid is called

Condensation

Sublimation

None

Freezing

54. Sintered crucible is made up of

Glass

Plastic

Filer

Porcelain

55. Condensed solid produced during sublimation is

Sublimate

Insoluble

Crystal

Residue

56. 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 fits tightly

If the paper has got small sized pores in it

If the paper covers the funnel up to its circumference

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

Chloroform

Carbon tetrachloride

Ethanol

Acetic acid

58. Solvent extraction method is used for compounds which are

Thermally unstable

None

Both A and B

Volatile

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

Law of mass action

Amount of solute

Distribution law

Amount of solute used

60. Examples of sublimate does not include

Nitrates

Ammonium salts

Iodine

Naphthalene

You Can Learn and Gain more Knowledge through our Online Quiz and Testing system Just Search your desired Preparation subject at Gotest.

Basic Concepts of Chemistry Online Mcqs Test
Chemistry Industrial Chemistry Online Mcqs Test
Chemistry Aldehydes and Ketones Online Mcqs Test
Chemistry Alcohols And Phenols Online Mcqs Test
Chemistry Alkyl Halides Online Mcqs Test
Chemistry Macro Molecules Online Mcqs Test
Chemistry Carboxylic Acid Online Mcqs Test
Chemistry of Hydrocarbons Online Mcqs Test
Chemistry Transition Elements Online Mcqs Test
Chemistry Reaction Kinetics Online Mcqs Test

Malik TahirLast Updated: October 14, 2025

Chemistry Experimental Techniques Online Mcqs Test

Important Chemistry Experimental Techniques Question and Answer

Chemistry Experimental Techniques Practice Test Online With Explanation

Chemistry

Related Posts

Malik Tahir

One Comment

Leave a Reply Cancel reply