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Chemistry Test ...

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  • Question 1
    4 / -1

    Leaching involves the formation of a soluble complex of metal by addition of a chemical. Leaching of the silver ore is done by adding a solution of NaCN in the atmosphere of which of the following gases?

  • Question 2
    4 / -1

    A considerable part of the harmful UV radiation of the sun does not reach the surface of Earth because of the formation of ozone in the stratosphere. However, a continuous decrease in the ozone levels has raised serious environmental issues because of the leaking in of the ultraviolet radiation into the Earth's atmosphere. Which of the following statements in this context is not true?

  • Question 3
    4 / -1

    Cyanide process is used for the extraction of

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