What is Gold Number?

Added on 19 February 2010

Zigmondy introduced the term gold number to evaluate quantitatively the protective power of different lyophilic colloids. It may be defined as ‘least quantity of protective colloid in milligrams

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Posted in Ques Colloid

Number Systems

Added on 29 July 2009

The computer stores numbers, letters and other characters in a coded form due to its electronic characteristics ….

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Posted in Information Technology

Concept of Length

Added on 24 July 2009

Length of an object can be defined as the distance of separation between any two points at the extreme ends of the object, it is considered as ‘distance’

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Posted in Physics

Basics Positive and Negative Angles

Added on 20 July 2009

Angle generated by a counter-clockwise rotation, we call angle a Positive Angle. On the other hand, if an angle is generated by a clockwise rotation we call angle a Negative Angle

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Posted in Trigonometry

What is a Colloid?

Added on 16 July 2009

Colloid is a heterogeneous mixture in which particle size is intermediate of true solution and suspension. Smoke from a fire is example of colloidal system ..

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Posted in Colloids

Examples of Colloids

Added on 12 July 2009

Examples of Colloids discuss different types of colloidal dispersions and their examples. Colloids are important chemicals which are used extensively used to produce commercial products.

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Posted in Colloids

Lyophobic Colloid

Added on 09 July 2009

Lyophobic colloids are liquid hating colloids (Lyo means solvent and phobic means hating). In Lyophobic sol, weak forces of interaction exist between colloidal particles and liquid.

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Posted in Colloids

Lyophilic Colloids

Added on 02 July 2009

Lyophilic colloids are liquid loving colloids (Lyo means solvent and philic means loving). Colloids are mixed with the suitable liquid, high force of attraction exists between colloidal particles and liquid.

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Posted in Colloids

Difference between Lyophobic and Lyophilic

Added on 25 June 2009

It provides comprehensive difference between Lyophilic and Lyophobic sols in a concise way. The differsences between the two are arranged in order of their importance.

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Posted in Colloids

Properties of Colloids

Added on 10 June 2009

Colloids show some unique properties like Tyndall Effect, Brownian Movement, Colligative Property & Electro Osmosis which we discussed here

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Posted in Colloids