Question

which of the following is not an element?
(i) silica (ii) silicon (iii) graphite​

Answer 1

Answer:

Silica

Explanation:

Element consist of single type of atom.

Graphite is composed of Carbon(C) only & silicon ( Si) is also an element belonging to carbon family.

Silica is SiO2 ( silicon dioxide) which consist of Silicon and Oxygen. Therefore it is not an element.

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