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Grade 8Inorganic Chemistry

Which one of the following is not an element?
A
Diamond
B
Ozone
C
Silica
D
Graphite

Profile image of Shamit Jain
5 Years agoGrade 8
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1 Answer

Profile image of ankit singh
5 Years ago

Silicon dioxide is known as silica with molecular formula =SiO2 which is a compound, not an element.
Diamond and graphite are purely made up of carbon i.e C, an element.
Ozone is trioxygen molecule i.e O3, an element.
Hence, the answer is option C.