Practicing Success

Target Exam

CUET

Subject

Biology

Chapter

Evolution

Question:
Read the passage and answer the following questions: Oparin of Russia and Haldane of England proposed that the first form of life could have come from pre-existing non-living organic molecules (e.g. RNA, protein, etc.) and that formation of life was preceded by chemical evolution, i.e., formation of diverse organic molecules from inorganic constituents. In 1953, S.L. Miller, an American scientist created similar conditions in a laboratory scale.

Scientists created electric discharge in a closed flask containing H2 , NH3 and water vapour at 800 degree Celsius and one more gas .What's the name of this gas?

Options:

H2

CH4

N2

CO2

Correct Answer:

CH4

Explanation:

 In 1953, S.L. Miller created electric discharge in a closed flask containing CH4 , H2 , NH3 and water vapour at 800degree Celsius . He observed formation of amino acids.