Non-conventional extraction techniques I

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Questions and Answers

What is the main purpose of the release of solutes from a sample matrix to a solvent?

To increase the surface area of the sample
To facilitate the extraction of desired compounds (correct)
To enhance the solubility of the sample matrix
To reduce the viscosity of the solvent

What is a characteristic of Microwave-Assisted Extraction (MAE) mentioned in the text?

It is a non-thermal extraction process
It has several advantages (correct)
It is used for large-scale industrial applications
It is a conventional extraction technique

What is a possible outcome of the release of solutes from a sample matrix to a solvent?

Denaturation of the solutes
Formation of a homogeneous solution (correct)
Separation of the sample matrix and solvent
Precipitation of the solutes

What is the primary role of the solvent in the release of solutes from a sample matrix?

To facilitate the transfer of solutes from the sample matrix (A) Signup and view all the answers

What is implied about the release of solutes from a sample matrix to a solvent in the context of MAE?

It is a crucial step in the extraction of desired compounds (B) Signup and view all the answers

What is the relationship between ions and field signs?

Ions keep their direction along field signs that change frequently. (A) Signup and view all the answers

What happens to ions when field signs change?

Ions maintain their direction and continue moving forward. (A) Signup and view all the answers

What is the characteristic of ions related to field signs?

Ions maintain their direction along field signs. (D) Signup and view all the answers

What happens when field signs change frequently?

Ions maintain their direction. (C) Signup and view all the answers

What is the behavior of ions in relation to field signs?

Ions maintain their direction along field signs. (D) Signup and view all the answers

What is the relationship between ions and direction in the context of field signs?

Ions maintain their direction along field signs. (A) Signup and view all the answers

What is the number of sequential steps involved in the extraction mechanism of microwave-assisted extraction?

3 (D) Signup and view all the answers

What is the primary mechanism of microwave-assisted extraction?

Solute release (A) Signup and view all the answers

What is the role of the solvent in microwave-assisted extraction?

To facilitate the release of solutes from the sample matrix (D) Signup and view all the answers

What is the likely outcome of the three sequential steps of microwave-assisted extraction?

Release of solutes from the sample matrix (C) Signup and view all the answers

What is the likely function of microwaves in microwave-assisted extraction?

To facilitate the release of solutes from the sample matrix (C) Signup and view all the answers

What is the context in which the three sequential steps of microwave-assisted extraction occur?

In a solvent (C) Signup and view all the answers

What is the purpose of non-conventional extraction techniques?

To extract organic and organometallic compounds in their intact form (C) Signup and view all the answers

What type of compounds are typically extracted using non-conventional techniques?

Organic and organometallic compounds (C) Signup and view all the answers

What is the advantage of non-conventional extraction techniques over conventional methods?

They are more selective and gentle (D) Signup and view all the answers

What is the main characteristic of non-conventional extraction techniques?

They are highly selective and specific (A) Signup and view all the answers

What is the purpose of using non-conventional extraction techniques for organic and organometallic compounds?

To preserve their intact structure and properties (A) Signup and view all the answers

What is the benefit of using non-conventional extraction techniques for sensitive compounds?

They are more selective and gentle (A) Signup and view all the answers

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