Calcium oxide interacts with 1) silicon oxide 2) carbon monoxide (2) 3) nitric oxide (2) 4) nitric oxide (1).

Of these substances, calcium oxide reacts with silicon oxide. The result is the following reaction.

SiO2 + CaO = CaSiO3.

When calcium oxide and silicon oxide interact, the result is a compound called calcium silicate.

Calcium silicate is an inorganic substance, a salt of an alkaline earth metal calcium and metasilicic acid with the formula CaSiO3. Forms colorless crystals that are insoluble in water.



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