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Nature and Composition of Substances

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  1. Consider the following elements
    1. Copper
    2. Gold
    3. Platinum
    4. Silver
    Which of the above elements exists free in nature ?
    1. 1 and 2
    2. 2 and 3
    3. 1, 2 and 4
    4. 3 and 4
Correct Option: B

NA


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