methods of primary productivity

Primary and Secondary Productivity - 'The amount of organic matter or biomass produced by an individual organism, population, community or ecosystem during a given period of time is called productivity'. Primary production refers to all or any part ..

'The amount of organic matter or biomass produced by an individual organism, population, community or ecosystem during a given period of time is called productivity..

Pure primary aliphatic amines are prepared from alkyl halides by this method. In this reaction potassium phthalimide by reaction with KOH. The potassium phthalimide on treatment with alkyl halides gives N - alkyl phthalimide which on hydrolysis with 20% hydrochloric acid g..

Gabriel Synthesis of Primary Amines - Pure primary aliphatic amines are prepared from alkyl halides by this method. In this reaction potassium phthalimide by reaction with KOH. The potassium phthalimide on treatment with alkyl halides gives N - alkyl phthalimide which ..

The Sun radiates energy in the form of heat and light. We utilize these forms of energy either directly or indirectly, after conversion into some other forms. Utilization of solar energy in various ways is as represented. Besides the primary role of the Sun's energy, it is now believed t..

Methods of Preparation - i) Primary aromatic armines react with nitrous acid at low temperature (273 - 278 K) to give aromatic diazonium salts. This reaction is known as diazotisation. Nitrous acid being unstable, is prepared in situ by the reaction of sodium nitrite and dilute ..

i) Primary aromatic armines react with nitrous acid at low temperature (273 - 278 K) to give aromatic diazonium salts. This reaction is known as diazotisation. Nitrous acid being unstable, is prepared in situ by the reaction of sodium nitrite and dilute mineral aci..

Isolation Method - For reactions where many reactants are involved, the order of the reaction is determined by the method of isolation. This was developed by Ostwald. In this method, the concentrations of all the reactants except one are taken in excess. For e.g., in t..

The symbols and formulae of the reactant and products are written as a skeletal equation. Any elementary gas (O 2 , H 2 , N 2 etc.) appearing on either side of the skeletal equation, is written in the atomic state. The formula containing the maximum number of atoms is selected to..

Introduction - One of the primary objectives of agriculture is to produce food. In the entire history of agriculture, food production has remained a prime objectiv..