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Gold is extracted by hydrometallurgical ...

Gold is extracted by hydrometallurgical process based on its property

A

of being electropositive

B

of being less reactive

C

to form complexes which are water soluble

D

to form salts which are water soluble

Text Solution

Verified by Experts

The correct Answer is:
C
`4Au + 8NaCN + 2H_2O + O_2 rarr underset("soluble complex")(4Na[Au(CN)_2])+4NaOH`
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