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Define ascending type of paper chromatography?
The ascending type consists in dipping the lower end of the paper containing the sample spots into the solvent so that it is above the solvent depth and then allowing it to rise up the paper by capillary action. The mobile phase or solvent moves in the upward direction against the gravitational force. The rate of movement of solvent becomes slower with increasing height which provides enough time for partition equilibrium between the two phases to take place. However the disadvantage in this is that compounds with low Rf values may not separate well.
Advantages of Ridgemapping This procedure is a good indicator of the available bone width and helps in understanding the angulation of the available bone to the eventual prosth
Define Carbohydrates Requirements in Human Body? Carbohydrates: High carbohydrate diets are beneficial at HA. The advantage of high carbohydrate diet is that respiratory quo
A microbiology student isolated a hypothetical bacterial cell that seems to quadruple every generation. Knowing that binary fission is an exponential function, derive a mathematica
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Specific Gravity The density of a substance is defined as mass per unit volume. The density of a substance is a characteristic property and has a definite value at a given te
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State the term supply shortly. Supply: Potential firms or businesses into the market which are willing and capable to supply various quantities of a good or service at a
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Sour taste is usually due to the presence of acids such as acetic acid, citric acid, benzoic acid. Upon dissociation, the acids give H ions which impart acidity. More the H ion con
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