A) Lime stone, clay and sand
B) Lime stone, gypsum and sand
C) Lime stone, gypsum and alumina
D) Lime stone, clay and gypsum
Correct Answer: D
Solution :
Lime stone - \[CaC{{O}_{3}}\] Clay - silica and alumina Gypsum - \[CaS{{O}_{4}}.2{{H}_{2}}O\]You need to login to perform this action.
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