Colloids :- A Colloid is a heterogeneous system in which one substance is dispersed ( dispersed phase ) as very fine particles in another substance called dispersion medium. Colloidal particles have and enormous surface area per unit mass as a result of their small size. Consider a cube with 1 cm side. It has a […]
Adsorption :- Adsorption is defined as the deposition of molecular species onto the surface . The molecular species that gets absorbed on the surface is known as absorbate and the surface on which adsorption occurs is known as adsorbent . Common examples of adsorbents are clay , silica , gel , metal etc . Adsorption
Adsorption and it’s Types , Catalysis and Catalysts Read Post »
Order of Reaction :- The sum of powers of concentration of the reactants in the rate expression is called the order of that chemical reaction . Example – Rate of reaction = K [ A ]ˣ [ B ]ʸorder Here x and y represent the order with respect to the reactants A and B respectively
Rate of a Chemical reaction :- Some reactions such as ionic reactions occurs very fast , for example – precipitation of silver chloride occurs instantaneously by mixing of aqueous solutions of Silver nitrate and Sodium chloride . Some reactions are very slow , for example – rusting of iron in the presence of air and
Rate of a Chemical Reaction and Collision Theory Read Post »
Electrolytes :- Electrolytes are substances that produce an electrically conducting solution when dissolved in a polar solvent , such as water . The dissolved electrolytes separates into cations and anions , which disperse uniformly through the solvent . Examples – NaCl , HCl , H₂SO₄ , HNO₃ , CaCl₂ , NaOH , CH₃COOH , KNO₃
Electrolytes , Electolytic Cell and Electrochemical Cell Read Post »
Population :- A population may be defined as a group of organisms of the same species occupying a certain area or space at a given time . population Attributes :- A population has certain attributes that and individual organism does not . An individual may have births and deaths , but a population has birth
Biodiversity :- Biodiversity is the term popularised by the sociologist Edward Wilson to describe the combined diversity at all the levels of biological organisation . The most important of biodiversity are – 1 . Genetic diversity :- A Single species might show high diversity at the genetic level over its distributional range . The genetic
Ecosystem :- An Ecosystem can be visualised as a functional unit of nature , where living organisms interact among themselves and also with the surrounding physical environment . Components of an Ecosystem :- 1 . Biotic components . 2 . Abiotic components . Biotic components :- Biotic components are living things that shapes an Ecosystem
Ecosystem , Trophic levels , Productivity , Nutrient Cycling Read Post »
Microbes in Human Welfare :- Microbes are the major components of biological Systems on this earth . Microbes like bacteria and many fungi can be grown on nutritive media to form colonies , that can be seen with the naked eyes . Such culture are useful in studies on micro-organisms . Microbes causes disease in
Applications of Biotechnology :- Applications of Biotechnology in – 1 . Alcohol production . 2 . Dairy products formation . 3 . Organic acids formation . 4 . Enzymes production . 5 . Vitamins production . 6 . Antibiotics production . 7 . Vaccines production . 8 . Hormones production . 9 . Recombinant DNA
Biotechnology :- Biotechnology is recent branch of biology . Biotechnology deals with the techniques of using live organisms or enzymes from organisms to produce products and processes useful to humans . Principles of Biotechnology :- The two techniques are used for the development of modern Biotechnology . ( 1 ) Genetic Engineering :- This techniques
Colligative Properties :- Colligative properties are properties of solutions that depends on the ratio of the number of solute particles to the number of solvent molecules in a solution and not on the nature of the chemical species present . All these colligative properties have the common characteristics that depend upon the number of Solute
