Question

Given below are two statements:
Statement-I : Retardation factor $\left( R _{ f }\right)$ 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:

• A. Statement-I is true but statement-II is false
• B. Both statement-I and statement-II are true
• C. Both statement-I and statement-II are false
• D. Statement-I is false but statement-II is true

Answer 1

Answer: (C)

$R _{ f }=$ retardation factor

$R_f = \frac{\text{Distance travelled by the substance from reference line(c.m)}}{\text{Distance travelled by the solvent from reference line (c. m)}}$

Note $: R _{ f }$ value of different compounds are different