Two compounds $I$ and $II$ are eluted by column chromatography (adsorption of $I > II$). Which one of the following is a correct statement?

  • A
    $II$ moves slower and has higher $R_f$ value than $I$
  • B
    $II$ moves faster and has higher $R_f$ value than $I$
  • C
    $I$ moves faster and has higher $R_f$ value than $II$
  • D
    $I$ moves slower and has higher $R_f$ value than $II$

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Explain the following terms related to Adsorption Chromatography:
$(a)$ Principle of Adsorption chromatography.
$(b)$ Adsorbent.
$(c)$ Mobile phase.
$(d)$ Adsorbate.

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Match List-$I$ with List-$II$.
List-$I$ List-$II$
$A$. Physisorption $I$. Single layer adsorption
$B$. Chemisorption $II$. $20-40 \, kJ \, mol^{-1}$
$C$. $N_{2(g)} + 3H_{2(g)} \xrightarrow{Fe(s)} 2NH_{3(g)}$ $III$. Chromatography
$D$. Analytical Application of Adsorption $IV$. Heterogeneous catalysis

Choose the correct answer from the options given below:

What are the applications of adsorption in chemical analysis?

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The equation for Freundlich adsorption isotherm is

Which of the following gases is adsorbed to maximum extent?

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