GK
ELEMENTS COMPOUNDS SUBSTANCES METALS AND NON METALS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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O
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Cr
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Cu
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Ni
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Detailed explanation-1: -We can understand from the above discussion that gold metal does not react with acids. Therefore, the correct answer is option C Gold. Note: Gold is not dissolved in acid but there is a special mixture of acids which is used to dissolve gold.
Detailed explanation-2: -Detailed Solution Gold (Au) is one of the least reactive elements on the Periodic Table. As it is placed at lowest in the reactivity series. So, because of this reason, gold does not react with acid.
Detailed explanation-3: -Carbon monoxide is an oxide of carbon that does not react with either acids or bases.
Detailed explanation-4: -All other elements, Zn, Ti, Fe are quite reactive. Hence, oxygen does not react with Platinum (Pt) directly. Q.
Detailed explanation-5: -Acids do not react with metals except with Zn, Al and Sn.