Which of the following metal (s) produce(s) `N_2O` gas on reaction with 20% `HNO_3`

Which of the following metal (s) produce(s) `N_2O` gas on reaction with 20% `HNO_3`
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Which of the following metal (s) produce(s) `N_2O` gas on reaction with 20% `HNO_3` A. Fe B. Sn C. Cu D. Zn
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