A) methane
B) \[C{{O}_{2}}\]
C) hydrogen
D) water vapour
Correct Answer: B
Solution :
In 1953, Stanley Miller and Harold Urey synthesized amino acids by passing an electric discharge in a mixture of methane \[(C{{H}_{4}}),\]ammonia \[(C{{H}_{3}}),\]hydrogen \[({{H}_{2}})\]and water vapour \[({{H}_{2}}O).\] The ratio of methane, ammonia and hydrogen was \[2:1:2.\text{ }C{{O}_{2}}\] was not present in the Urey-Millers experiment mixture.
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