A) Double salt
B) Sorrel cement
C) Portland cement
D) None of these
Correct Answer: B
Solution :
\[MgC{{l}_{2}}.6{{H}_{2}}+5MgO+x{{H}_{2}}O\to \]\[\underset{\text{Magnesia cement or sorrel cement}}{\mathop{MgC{{l}_{2}}.5MgO.x{{H}_{2}}O}}\,\]
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