Atmosphere of earth just before the origin of life consisted of ___________________.

Water vapours,

C H_{4}, N H_{3}

and Oxygen

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C H_{4}, N H_{3}

and

H_{2}

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C O_{2}, N H_{3}, H_{2}

and water vapours

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C H_{4}, O_{3}, O_{2}

and water vapours

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Solution

The correct option is B $C H_{4}, N H_{3}$ and $H_{2}$ S
The atmosphere of earth just before the origin of life consisted of methane, ammonia, hydrogen sulfide, but no oxygen.
The correct option is B.

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