Multiple Choice Questions on Until the nineteenth century aluminium was almost as expensive as gold The invention of an inexpensi........... for UPSC Civil Services Examination (General Studies) Preparation

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Multiple Choice Questions

Until the nineteenth century aluminium was almost as expensive as gold The invention of an inexpensi...........

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    Until the nineteenth century, aluminium was almost as expensive as gold.The invention of an inexpensive way to extract this metal by a 22 – year – old American made this metal inexpensive subsequently. The inventor was

    Goldschmidt

    Incorrect Answer

    Mond

    Incorrect Answer

    Charles – Martin Hall

    Correct Answer

    Parkes

    Incorrect Answer
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    Explanation:

    Until the nineteenth century, aluminium was almost as expensive as gold.The invention of an inexpensive way to extract this metal by a 22 – year – old American made this metal inexpensive subsequently. The inventor was Charles – Martin Hall.

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