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(A) $(i)$ Nitrogen from air is separated by Fractional distillation because it involves separating components based on their different boiling points.

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Fractional distillation,Chromatography,Centrifugation,Sublimation

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(A) $(i)$ Nitrogen from air is separated by Fractional distillation because it involves separating components based on their different boiling points.$(ii)$ Dye from blue ink is separated by Chromatography,which is used to separate solutes that dissolve in the same solvent.$(iii)$ Butter cream from milk is separated by Centrifugation,where denser particles are forced to the bottom and lighter particles stay at the top.$(iv)$ Ammonium chloride from common salt is separated by Sublimation,as ammonium chloride sublimes upon heating while common salt does not.

Name the appropriate methods to separate the following:
$(i)$ Nitrogen from air
$(ii)$ Dye from blue ink
$(iii)$ Butter cream from milk
$(iv)$ Ammonium chloride from common salt

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Name the appropriate methods to separate the following:$(i)$ Nitrogen from air$(ii)$ Dye from blue ink$(iii)$ Butter cream from milk$(iv)$ Ammonium chloride from common salt