Order of elution and polarity of compounds in TLC or column chromatography

1. A.
   A, B and C only
2. B.
   B, C and D only
3. C.
   A, B and D only
4. D.
   B and D only

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1. A.
   low $R_{f}$, weaker adsorption
2. B.
   high $R_{f}$, stronger adsorption
3. C.
   high $R_{f}$, weaker adsorption
4. D.
   low $R_{f}$, stronger adsorption

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1. A.
   A, C, B
2. B.
   B, C, A
3. C.
   C, A, B
4. D.
   B, A, C

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1. A.
   Organic compounds run faster than solvent in the thin layer chromatographic plate.
2. B.
   Non-polar compounds are retained at top and polar compounds come down in column chromatography.
3. C.
   $R_{f}$ of a polar compound is smaller than that of a non-polar compound.
4. D.
   $R_{f}$ is an integral value.

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1. A.
   0.42
2. B.
   0.82
3. C.
   0.62
4. D.
   0.12

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