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UPSC 2012 · Q63 · Science & Technology › Biology · Save

Which one of the following sets of elements was primarily responsible for the origin of life on the Earth?

(a) Hydrogen, Oxygen, Sodium
(b) Carbon, Hydrogen, Nitrogen
(c) Oxygen, Calcium, Phosphorus
(d) Carbon, Hydrogen, Potassium
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Answer: (b) Carbon, Hydrogen, Nitrogen