Question

A metal that does not react with dilute sulphuric acid

Answer 1

copper is the only metal that does not react with dilute sulphuric acid( H2SO4)

Answer 2

copper doesn't react with dilute h2so4

we use aqua regia for melt copper.
aqua regia is the mixture of concentrate hcl and concentrate hno3 . it's mixture 1:3.

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