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Chemistry Quiz: Solvents and Dyes

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Questions and Answers

What is the primary use of Gentian Violet?

As a topical antiseptic dye (correct)

As a food coloring agent

As a paint pigment

As a fragrance in cosmetics

Why is Gentian Violet named as such?

It is derived from a purple flower

It has a name linked to a geographic location

It is not made from gentian or violet flowers (correct)

Its color changes according to pH levels

In which method is Gentian Violet used as a histological stain?

Cohens technique

Gram's Method (correct)

Romanowsky stain

Warthin-Starry method

What is a cosolvent?

<p>A substance added to enhance solubility of poorly-soluble compounds</p> Signup and view all the answers

Since when has Gentian Violet been in use?

<p>Since 1890</p> Signup and view all the answers

Study Notes

Cosolvent

Substances added to a primary solvent in small amounts to increase the solubility of a poorly-soluble compound

Gentian Violet

An antiseptic dye used since 1890
Topical treatment for various dermatological conditions
Used as a histological stain, particularly in Gram's Method for classifying bacteria
Name comes from its color; not derived from gentian or violet flowers.

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Description

Test your knowledge on cosolvents and their role in enhancing solubility, as well as the properties and uses of Gentian Violet. This quiz covers essential chemical concepts and historical applications in dermatology and microbiology. Perfect for students studying chemistry or interested in dye applications.