Multiple choice questions IV — task. Science CBSE, Class 10.

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1. Which of the following gas was absent on primitive earth?

\(NH_3\)
\(CH_4\)
\(CO_2\)
\(O_2\)

2. Which English scientist worked on origin of life and finally settled in India?

J.B.S. Haldane
A.I. Oparin
Louis Pasteur
Rchbishop Ussher

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