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Question

The ratio of CH4,NH3 and H2 used by Miller in his spark discharge apparatus was
  1. 2 : 1 : 2
  2. 1 : 1 : 2
  3. 1 : 2 : 2
  4. 2 : 1 : 1

A
2 : 1 : 1
B
2 : 1 : 2
C
1 : 2 : 2
D
1 : 1 : 2
Solution
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A- The Miller-Urey experiment or Miller experiment was an experiment that instigated the condition which were thought to be present in early earth or primitive earth. Hecreated electric discharge in a closed flask containing a mixture of ammonia(NH3), methane(CH4), hydrogen(H2) and water vapour(H2O) at 800 degree celcius and observed formation of amino acids The ratio of CH4,NH3 and H2 was 2:1:2.

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