Which of the following is true about the surface of silica gel used for chromato

Question

Which of the following is true about the surface of silica gel used for chromatographic separations? It is non-polar It is strongly acidic It is polar It is strongly basic Which of the following is characteristic of a typical phase transfer catalyst? able to absorb hydrogen on a carbon surface shares structural features of both ionic and non-polar compounds usually a transition metal such as Pd or Pt two of the above Which is the best method to separate an undissolved solid from water? Gravity filtration Rotary evaporation Vacuum filtration Silica gel chromatography

Explanation / Answer

4.

silica gen which we used in labaratory is

strongly acidic

option B is correct answer

that is why polar compounds which can form hydrigen bonding will move much slowly in column than the polar compound which cannot form hydrogen bonding

5.

option B

6.

vaccum filteration

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