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Which of the following factors is not necessary while choosing a suitable leaching reagent?

Which of the following factors is not necessary while choosing a suitable leaching reagent? Correct Answer Colour of reagent

A leaching reagent is chosen to take into account some of the important factors like cost of reagent, regeneration ability, corrosion ability, selectivity etc. Colour of the reagent does not have much role in the choice of the reagent. While choosing a reagent, we have to also depend on the physical and chemical properties of the material which is to be leached.

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