Which of the following is not a precipitate in lime-soda process?

1.	Which of the following is not a precipitate in lime-soda process?
A.	CaCO<sub>3</sub>
B.	Fe(OH) <sub>3</sub>
C.	Al(OH) <sub>3</sub>
D.	Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>
Answer» E.

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