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Given below are two statements :

Question:

Given below are two statements :

Statement-I : Retardation factor $\left(\mathrm{R}_{\mathrm{f}}\right)$ can be measured in meter/centimeter.

Statement-II : $R_{f}$ value of a compound remains constant in all solvents.

Choose the most appropriate answer from the options given below:

 

  1. Statement-I is true but statement-II is false

  2. Both statement-I and statement-II are true

  3. Both statement-I and statement-II are false

  4. Statement-I is false but statement-II is true

Correct Option: , 3

Solution:

$\mathrm{R}_{\mathrm{f}}=$ retardation factor

Distan ce travelled by the substance from

$\mathrm{R}_{\mathrm{f}}=\frac{\text { reference line }(\mathrm{c} . \mathrm{m})}{\text { Distance travelled by the solvent from }}$

reference line (c.m)

Note : $R_{f}$ value of different compounds are different.

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