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Which fo the following metal is rendered passive by the action of highly concentrated nitric acid (~80%)?A. 5B. 2C. 6D. 10

Answer» Correct Answer - D
`4Zn+10HNO_(3)rarr4Zn(NO_(3))_(2)+NH_(4)NO_(3)+3H_(2)O`
`I_(2)+10HNO_(3)rarr2HIO_(3)+10NO_(2)+4H_(2)O`
`3Pt+4HNO_(3)+18 HClrarr3H_(2)[PtCl_(6)]+4NO+8H_(2)O`


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