Question

In chromatography the ingredients of a mixture rise up to limited height when water rises up to upper end of paper

Answer 1

paper chromatography helps in seperating the chlorophyll pigments. As the solvent flows through the paper it spreads the different compounds of the mixture to various distances .

Answer 2

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$\maltese$ In chromatography the ingredients of a mixture rise up to limited height when water rises up to upper end of paper

❖ In chromatography method, two mutually opposite properties of  substances are used. These are solubility of the substance in the solvent that  moves up

❖ The ability of the substance to stick to the stationary filter paper. These  properties are different for different substances.

❖ Since water is a solvent, it rises rapidly across the chromatography filter  paper. But the solutes will not rise with that speed.

❖ Therefore, the ingredients of a mixture rise up to a limited height when  water rises up to the upper end of the paper.

          ___________

Gain Knowledge  ☃️

Metals :-

Metals have lustre, they are malleable and ductile. Metals are good conductors of heat  and electricity. At normal temperature, metals are  in solid state. (Except Mercury). Normally metals have high density.

Example: Gold, Silver, Mercury.

Non - Metals :-

Non-metals do not have lustre, They are not malleable nor ductile. Non-metals are not good conductors  of heat and electricity. At normal temperature, non-metals  are either in solid state or in gaseous  state. (Except: Bromine – in liquid  form).Normally non-metals have less  density.  

Example: Oxygen, Hydrogen

         

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