MCQ
The correct statements among the following, for a "chromatography" purification method is:
  • A
    Organic compounds run faster than solvent in the thin layer chromatographic plate.
  • B
     Non-polar compounds are retained at top and polar compounds come down in column chromatography.
  • $R_f$ of a polar compound is smaller than that of a non-polar compound.
  • D
    $R_f$ is an integral value.

Answer

Correct option: C.
$R_f$ of a polar compound is smaller than that of a non-polar compound.
c
Non polar compounds are having higher value of $R_f$ than polar compound.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

One mole of a compound $AB$ reacts with one mole of a compound $CD$ according to the equation $AB + CD$ $\rightleftharpoons$ $AD + CB$. When equilibrium had been established it was found that $\frac{3}{4}$mole each of reactant $AB$ and $CD$ had been converted to $AD$ and $CB$. There is no change in volume. The equilibrium constant for the reaction is
Structure of $IF_4^ + $ and hybridization of iodine in this structure are
The equilibrium $\mathrm{SO}_2 \mathrm{Cl}_2(\mathrm{~g}) \rightleftharpoons \mathrm{SO}_2(\mathrm{~g})+\mathrm{Cl}_2(\mathrm{~g})$ is attained at $25^{\circ} \mathrm{C}$ in a closed container and an inert gas, helium, is introduced. Which of the following statements is/ are correct?
The solubility product of $A{s_2}{S_3}$ is $2.8 \times {10^{ - 72}}$. What is the solubility of $A{s_2}{S_3}$
Assume each reaction is carried out in an open container. For which reaction will $\Delta H = \Delta E$ ?
Non-polar solvent is
Standard molar enthalpy of formation of $CO_2$ is equal to
The compound ‘$A$’ when treated with $HN{O_3}$ (in presence of ${H_2}S{O_4}$) gives compound ‘$B$’ which is then reduced with $Sn$ and $HCl$ to aniline. The compound ‘$A$’ is
The largest oxidation number exhibited by an element depends on its outer electronic configuration. With which of the following outer electronic configurations the element will exhibit largest oxidation number?
The number of maximum possible different spectral lines obtained in Balmer series, when electron makes transition to ground state from $5^{th}$ excited state in a sample of hydrogen atoms