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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.
How old is the universe? From the analysis of data collected by the Hubble telescope the age of the universe is estimated to be about 12 billion years.
Define Citrate Utilization Test - imvic test? Several microorganisms have the ability to make use of citrate as the sole source of carbon and energy. This ability relies on the
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Cotyledon is a leaf-like structure which is present in the seeds of the flowering plants; it appears during seed germination and sometimes is referred to as the seed leaf.
Explain brifly what is Genetic Engineering ? Genetic Engineering : Engineering techniques have been used in agriculture and horticulture for centuries. Certain plants or ani
To make a 40 mg/mL solution of kanamycin (MW 582.6) how many grams of kanamycine would you dissolve in 500 mL of water?
harmful and beneficial usesa of phylum porifera
Define the Term Epimerism? In addition to D and L isomerism sugars also exhibit epimerism. Hexoses that differ from each other as a result of variation of H and OH on carbons 2
General characteristics of phylum
Spina Bifida Occulta There is no protrusion of the meninges but the vertebrae are bifid. There are three components of the spina bifida occulta. a) Vertebral- there is
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