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Define Ion exchange chromatography?
In this method a reversible exchange of ions is effected. Usually resins and ionic solutes are the two components involved in ion-exchange. Ion exchange resins are of two types cation and anion exchange resins. The acidic or cation exchange resins contain sulfonic acid groups (SO3H), carboxylic groups (COOH) or phenol groups (OH).
Basic or anion exchange resins contain weakly basic amine groups (NH2) or strongly basic quarternary ammonium groups (NH4)+ OH-. The surfaces of acid resins bind cations such as H, Na+, Ca2+, NH4+. The basic or anion exchange resins carry positive charges on the surface and thus adsorb negative ions.
Explain the History of Nutrition? Knowledge of human nutritional needs and relationship between diet and health was placed on a modern scientific footing only since the 19th ce
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S p e c i a l Uses Biogas Biogas is an important renewable energy resource for rural areas. Generation of bio-gas from dung and urine is a very simple and cost-effective
what is the scientific explanation of "touch me not" plant that can react due to any touch
describe the two scientific models for evolution (gradualism, punctuated equilibrium)
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Determine the concept of neuropsychological test A neuropsychological test therefore is defined as behavioural procedure that is particularly sensitive to the condition of the
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Attributes of Population The attributes of a population are of two basic types : i) Numerical attributes such as density, mortality (birth rate), mortality (death rate), disper
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