Given below are two statements Statement -I : Retardation factor … - Vidyadip

MCQ

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
✓
Both statement$-I$ and statement$-II$ are false
D
Statement$-I$ is false but statement-II is true

✓

Answer

Correct option: C.

Both statement$-I$ and statement$-II$ are false

c
$R _{ f }=$ retardation factor

Distance travelled by the substance from

$R _{ f }=\frac{\text { reference line }( c \cdot m )}{\text { Distan ce travelled by the solvent from }}$

reference line $(c.m)$

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

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