A,B,C and D are four 100-mlL samples of water. Fluoride ion concentrations in these samples are 2, 5, 8 and 12 ppm respectively. One drop of alizarine - S dye is added to each of these samples. The order of intesity of pink colour in these water samples is

A,B,C and D are four 100-mlL samples of water. Fluoride ion concentrat

1.	A,B,C and D are four 100-mlL samples of water. Fluoride ion concentrations in these samples are 2, 5, 8 and 12 ppm respectively. One drop of alizarine - S dye is added to each of these samples. The order of intesity of pink colour in these water samples is
Answer» `A GT B gt C gt D` `D gt C gt B gt A ` ` A LT B = C lt D` `A= B =C=D` ANSWER :A