Using the provided information in the following paper chromatogram:
The $R_f$ value of $A$ is ______ $\times {10}^{-1}$.

Q. Using the provided information in the following paper chromatogram:
The $R_f$ value of $A$ is ______ $\times {10}^{-1}$.

Q. Using the information, given in each of the following figures, find the value of $a$.

Q. The layer paper chromatograpy is performed on an unknown substance. Three solvents were tested, and the corresponding $R_f$ factors were measured: $1-propanol,R_f=1.15;hexane,Rf=0.32$; acetonitrile, $R_f=1.74$.
Which of the solvents would best separate the unknown substance with an $R_f=1.69$ from a known substance with an $R_f=1.53$?

Q. Identify the product(s) which will be formed by using the information provided about the reactants:
$C_4{H}_{10}\left(g\right)+O_2\left(g\right)\to$

Q. Which among the following inscriptions provide us with the information about Kharavela defeating a confederacy of Tamil states?