Question $1$:

$|8|$

where $Y$ is the number of grams of colour rensoved per gram of adsorbent and $x$ is the number of grams of colour per $1090$ gram of color free oil. $100kg$ oil comaining I part of cobr per $3$ parts of oil is agilated with $25kg$ of adsorben. Calculate the $\%$ of colour removal $(1)25kg$ adsorbent is used in one step, $(2)12\mathrm{.}5kg$ adsorbent is used initially followed by another $12\mathrm{.}5kg$ of adsoutbent