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Grade: 8

                        

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

23 days ago

Answers : (1)

ankit singh
askIITians Faculty
596 Points
							

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.

22 days ago
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