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How can you synthesize nitric oxide in the laboratory?
A. Zinc with cold and dilute `HNO_(3)`
B. Zinc with concentracted `HNO_(3)`
C. Copper with cold and dilute `HNO_(3)`
D. Heating `NH_(4)NO_(3)`

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Correct Answer - C
`3Cu+8HNO_(3)rarr3Cu(NO_(3))_(2)+4H_(2)O+underset("Nitric Oxide")(2NO)`

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