Which of these are an alloy . brick , tile , bronze , brass , steel glass ?

Bronze, brass, and steel.

EXPLANATION

An alloy is a mixture of two or more metals.

Brass is an alloy of copper and zinc, in proportions which can be varied to achieve varying mechanical and electrical properties.

Bronze is an alloy consisting primarily of copper, commonly with about 12% tin and often with the addition of other metals (such as aluminium, manganese, nickel or zinc) and sometimes non-metals or metalloids such as arsenic, phosphorus or silicon.

Steel is an alloy of carbon and iron.

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