Question

The separation of two coloured substances was done by paper chromatography The distances travelled by solvent front, substance $A$ and substance $B$ from the base line are $3.25\, cm. 2.08\, cm$ and $1.05 \,cm$. respectively. The ratio of $R_f$ values of $A$ to $B$ is ________

Answer 1

The correct answer is 2
RFB​​RFA​​​=3.251.05​3.252.08​​=1.052.08​≃2