Question

In order to develop hydraulicity, it is necessary to have _______ and ______ present in chemical combination with the limestone.

(a) Alumina and carbon

(b) Magnesium and carbon

(c) Silica and carbon

(d) Alumina and silica

Answer 1

Right option is (d) Alumina and silica

Explanation: In order to develop hydraulicity, it is necessary to have alumina and silica present in chemical combination with the limestone. Silicates of magnesium, aluminium and calcium are responsible for hydraulicity.