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Solvent Extraction and Adsorption Chromatography

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Solvent Extraction and Adsorption Chromatography

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Questions and Answers

What is the main purpose of chromatography?

To combine components of a mixture

To separate components of a mixture (correct)

To create new compounds

To speed up chemical reactions

Where does the name 'chromatography' come from?

Greek word meaning Colour (correct)

Arabic word meaning mixture

Latin word meaning separation

French word meaning purification

Who discovered the chromatography technique?

Curie

Mendeleev

Tswett (correct)

Bohr

What are the two phases used in chromatography for separation?

Solid phase and liquid phase (D) Signup and view all the answers

In chromatography, what does the mobile phase consist of?

Mixtures of solvents (D) Signup and view all the answers

How is chromatography classified based on the stationary phase used?

Adsorption Chromatography and Partition Chromatography (D) Signup and view all the answers

What is the principle of Adsorption Chromatography based on?

Differential adsorption (D) Signup and view all the answers

What type of stationary phase materials can be used in Column Chromatography?

Alumina and Silica gel (C) Signup and view all the answers

What is the function of the stopcock at the bottom of the column in Column Chromatography?

Controls the flow of mobile phase (C) Signup and view all the answers

How do solutes get separated in Column Chromatography?

By differential adsorption on the stationary phase (D) Signup and view all the answers

Which component is retained on the column in Column Chromatography?

The most strongly adsorbed component (C) Signup and view all the answers

What happens to the less strongly adsorbed component in Column Chromatography?

It desorbs first and leaves the column first (C) Signup and view all the answers

Which type of mixture is a solution considered to be?

Homogeneous mixture (B) Signup and view all the answers

In which state of matter are the particles held in perfect order, leading to definite shape and volume?

Solid (B) Signup and view all the answers

Which of the following is an example of a heterogeneous mixture?

Suspension of an insoluble solid in a liquid (B) Signup and view all the answers

What is the primary difference between a compound and a mixture?

Compounds involve two or three elements, while mixtures involve multiple substances. (A) Signup and view all the answers

Which state of matter has particles that are far apart compared to those in liquid and solid states?

Gas (C) Signup and view all the answers

What happens to the three states of matter when conditions of temperature and pressure change?

They become interconvertible. (D) Signup and view all the answers