Dyes W,X, Y and Z were analysed using P as the purest sample of the dye required by a chemist .the result obtained were as shown on the chromatogram below.

Question

Dyes W,X, Y and Z were analyzed using P as the purest sample of the dye required by a chemist .the result obtained were as shown on the chromatogram below.

1. What names are given to the lines marked?
   1. A 
   2. B 
2. State with a reason the most unsuitable dye for the chemist to use .

Answer 1

1.  
   1. A-Solvent front 
   2. B-Baseline  
2.  Z 
   Z is the most impure woth 3 substances not in the pure dye