What is the percentage of IRON, in chemical composition of earth?

(a) Approximately 20% – 22%
(b) Approximately 25%-27%
(c) Approximately 40%-42%
(d) Approximately 32%-35%

Anurag Mishra Professor Asked on 9th June 2016 in General Knowledge.
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    Answer: (d) Approximately 32%-35%

    Anurag Mishra Professor Answered on 9th June 2016.
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