Commercial production of soda ash by Solvay process requires
limestone, __________ as raw materials.
(A) Coke and sand
(B) Brine and coal
(C) Coke and caustic soda
(D) None of these
limestone, __________ as raw materials.
(A) Coke and sand
(B) Brine and coal
(C) Coke and caustic soda
(D) None of these