chromatography by rahim and hassan

In Thin layer chromatography, the stationary phase is made of​ ​ (a)   and the mobile phase is made of ​ (b)  

• soild
• liquid
• gas
• light

which of the following cannot be used as an adsorbent in column adsorption chromatography

• Activated alumina

• Potassium permanganate

• Silica gel

• Magnesium oxide

in paper chromatography. paper sheets act as the:

• both

• Neither

• Stationary phase

• Mobile phase

what is the factor responsible for the separation in column chromatogaphy?

• Polarity differences between the solvent

• Polarity indifference between the solute

• Polarity indifference between the solvent

• Polarity differences between the solute

column chormatography is based on the principle of ________

• Differential adsorption

• Ion-exchange

• Absorption

• Exclusion principle