separation techniques

Question 1

What is the primary purpose of separation techniques?

Answer 1

To isolate and purify specific components from a mixture.

Question 2

True or False: Distillation is a technique used for separating substances based on their boiling points.

Answer 2

True

Question 3

Fill in the blank: _________ chromatography uses a liquid mobile phase and a solid stationary phase.

Answer 3

Liquid

Question 4

What technique would you use to separate a soluble solid from a liquid?

Answer 4

Filtration

Question 5

Which separation technique is best for separating gases in a mixture?

Answer 5

Gas chromatography

Question 6

Multiple Choice: Which of the following is NOT a type of chromatography? A) Gas B) Liquid C) Magnetic D) Paper

Answer 6

C) Magnetic

Question 7

What is the principle behind centrifugation?

Answer 7

Separation based on density differences in components.

Question 8

True or False: Sublimation can be used to separate a solid from a mixture if the solid transitions directly to gas.

Answer 8

True

Question 9

Fill in the blank: In __________ distillation, a mixture is separated into its components based on different boiling points.

Answer 9

fractional

Question 10

What type of separation technique is used to separate colored pigments in a mixture?

Answer 10

Paper chromatography

Question 11

Multiple Choice: Which of the following is a method of separation based on particle size? A) Filtration B) Distillation C) Chromatography D) Centrifugation

Answer 11

A) Filtration

Question 12

What is the role of the stationary phase in chromatography?

Answer 12

To provide a medium for the separation of components in the mixture.

Question 13

True or False: Evaporation can be used to separate a solvent from a solute in a solution.

Answer 13

True

Question 14

Fill in the blank: The process of separating liquid mixtures using differences in boiling points is called __________.

Answer 14

distillation

Question 15

What is the main advantage of using high-performance liquid chromatography (HPLC)?

Answer 15

It allows for the separation of complex mixtures with high resolution and speed.

Question 16

Multiple Choice: Which technique is primarily used for purifying proteins? A) Filtration B) Distillation C) Affinity chromatography D) Centrifugation

Answer 16

C) Affinity chromatography

Question 17

What is the main purpose of using a separating funnel?

Answer 17

To separate immiscible liquids based on density.

Question 18

True or False: Sieving is a method used to separate liquids from solids.

Answer 18

False

Question 19

Fill in the blank: The technique of __________ is used to separate substances based on their solubility in different solvents.

Answer 19

extraction

Question 20

What type of separation method is used in the production of distilled water?

Answer 20

Distillation