2po
9. Which of the following element is
known as Noble metal
o
Iron
Copper
Gold
Aluminum
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GOLD
Noble metal, any of several metallic chemical elements that have outstanding resistance to oxidation, even at high temperatures; the grouping is not strictly defined but usually is considered to include rhenium, ruthenium, rhodium, palladium, silver, osmium, iridium, platinum, and gold; i.e., the metals of groups VIIb, ...
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Answer:Gold
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