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Define Adsorption chromatography - Basic Separation Technique?
Adsorption is surface interaction and is by number of forces, between surface atoms of solids and molecules of external solute. Adsorption chromatography comprises of systems where active absorption occurs at the surface of the solid stationary medium, often alumina or silica gel. Competition for adsorptive sites occurs between the molecules of the mixture to be separated and the molecules of mobile phase, be it gas or liquid.
The speed of migration of a component will depend on its adsorptive affinity relative to the other species present. A number of attractive forces (Vander Waal forces, hydrogen bonding etc.) between the stationary phase and substances to be separated have been recognized and separation takes place due to differences in these adsorption forces.
OSTEOPORASIS - Reduction in bone tissue mass causing weakness of skeletal strength. It leads to crush fracture. It occurs in pastmenopausal women & elderly man. Common
main external morphological feature that differentiates platyhelminthes from nematodes
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Factors that affects Oxygen Dissociation Curves - Temperature At higher temperature haemoglobin gives up oxygen more readily and the dissociation curve shifts to the right. Th
Why is AIDS difficult to prevent by vaccination? It is complex to produce a vaccine against AIDS because the HIV is a highly mutant virus. In almost every replication the produ
Behavior means responses or reactions or acting in any situation. Change means act of changing or to become different or to modify. Behaviour Change can refer to any modifica
what is somogyi
What happens if platelets aren''t present in blood?
Q. Use of Aldehydes as chemical sterilant? Formaldehyde: widely employed for the fumigation of operation theatres. Glutaraldehyde: commercial preparations are active at
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