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Write a short note on the following:- A) Brownian movement B) Food preservatives C) Disinfectants D) Types of preservatives E) Micelle formation F) Homologous series

Posted by Aakriti Rustagi 3 years, 11 months ago

CBSE > Class 12 > Chemistry

1 answers

Yogita Ingle 3 years, 11 months ago

Brownian movement may be defined as continuous zigzag movement of the colloidal particles in a colloidal solution. It depends on the size of the particles and the viscosity of the colloid. Smaller the size of the particle and lesser its viscosity, faster is its motion. This movement is responsible for the stability of sols

Food Preservatives

Food preservatives prevent spoilage of food due to microbial growth. The most commonly used preservatives include table salt, sugar, vegetable oils and sodium benzoate, C₆H₅COONa.
Sodium benzoate is used in limited quantities and is metabolised in the body. Salts of sorbic acid and propanoic acid are also used as preservatives.

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