Advertisements
Advertisements
प्रश्न
What criterion is followed for the selection of the stationary phase in chromatography?
Advertisements
उत्तर १
The stationary phase is selected in such a way that the components of the sample have different solubilities in the phase. Hence, different components have different rates of movement through the stationary phase and, as a result, can be separated from each other.
उत्तर २
A material that has a strong ability to absorb contaminants should be used as the stationary phase. Additionally, the stationary phase should have a higher capacity to adsorb contaminants than the element that needs to be cleaned. This will make it easier for the element to elute.
संबंधित प्रश्न
Name the method used for the refining of zirconium.
Explain the principle of the method of electrolytic refining of metals. Give one example.
Explain:
Zone refining
Explain column chromatography.
What is meant by the term “chromatography”?
Describe a method for refining nickel.
Outline the principles of refining of metals by the following method:
Vapour phase refining
Out of PbS and PbCO3 (ores of lead), which one is concentrated by froth floatation process preferably?
Outline the principles behind the refining of metals by the following methods:
Chromatographic method
Write down the reaction taking place in blast furnace related to the metallurgy of iron in the temperature rnge 500 K – 800 K. What is the role of limestone in the metallurgy of iron?
What happens when Silver is leached with NaCN in the presence of air?
What happens when Copper matte is charged into silica lined converter and hot air blast is blown?
Write two basic requirements for refining of a metal by Mond process and by Van Arkel Method.
Explain the following:
Vapour phase refining method is used for the purification of Ti.
Which one of the following methods can be used to obtain highly pure metal which is liquid at room temperature?
Describe a method for refining nickel.
Describe a method for refining nickel.
Describe a method for refining nickel.
Describe a method for refining nickel.
