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1. Multiple choice questions.(u) Which one of the following industries uses limestone as a raw material.(a) Aluminium(b) Cement(c) Sugar(d) Jute1 for the public sector plants?

Answer»

Portlandcementconsists essentially ofcompoundsof lime (calcium oxide, CaO) mixed with silica (silicon dioxide, SiO2) and alumina (aluminum oxide, Al2O3).so Cement uses lime soda as a row material



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