Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

Practical Organic Chemistry question

2024 · 6 Apr · Shift 2 · Q7
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Chemistry
  4. /Practical Organic Chemistry
  5. /2024 · 6 Apr · Shift 2 · Q7

Practical Organic Chemistry question

2024 · 6 Apr · Shift 2 · Q7

JEE MainChemistryPractical Organic ChemistryMCQ+4 / −1
The correct statement among the following, for a "chromatography" purification method is :
  1. A
    Rf\mathrm{R}_fRf​ of a polar compound is smaller than that of a non-polar compound.
  2. B
    Non-polar compounds are retained at top and polar compounds come down in column chromatography.
  3. C
    Organic compounds run faster than solvent in the thin layer chromatographic plate.
  4. D
    Rf\mathrm{R}_fRf​ is an integral value.
PreviousNext

More from Practical Organic Chemistry

  • Match List I with List II Choose the correct answer from the options given below : Includes table2024 · MCQ
  • Identify the incorrect statements regarding primary standard of titrimetric analysis. (A) It should be purely available in dry form. (B) It should not undergo chemical change in air. (C) It should be hygroscopic and should react with…2024 · MCQ
  • Match List I with List II Choose the correct answer from the options given below: Includes table2024 · MCQ
  • In the given TLC, the distance of spot A & B are 5 cm & 7 cm, from the bottom of TLC plate, respectively. Rf​ value of B is x×10−1 times more than A. The value of x is ​… Includes diagram2024 · Numerical
  • Which of the following compound can give positive iodoform test when treated with aqueous KOH solution followed by potassium hypoiodite.2024 · MCQ
  • The technique used for purification of steam volatile water immiscible substances is :2024 · MCQ
  • In chromyl chloride test for confirmation of Cl− ion, a yellow solution is obtained. Acidification of the solution and addition of amyl alcohol and 10% H2​O2​ turns organic layer blue indicating…2024 · MCQ
  • Chromatographic technique/s based on the principle of differential adsorption is / are A. Column chromatography B. Thin layer chromatography C. Paper chromatography Choose the most appropriate answer from the options given below:2024 · MCQ