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प्रश्न
Which of the following gas was not present in early earth atmosphere?
(a) Ammonia
(b) Oxygen
(c) Hydrogen sulphide
(d) Methane
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उत्तर
Oxygen was absent in early earth atmosphere.
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या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
