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(C) In $1953$,Stanley Miller and Harold Urey conducted an experiment to test the Oparin-Haldane hypothesis of the chemical origin of life. They create

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Methane

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(C) In $1953$,Stanley Miller and Harold Urey conducted an experiment to test the Oparin-Haldane hypothesis of the chemical origin of life. They created a closed system containing a mixture of $CH_4$ (methane),$NH_3$ (ammonia),$H_2$ (hydrogen),and $H_2O$ (water vapor) in a ratio of $2:1:2$. They subjected this mixture to electric discharges at $800^{\circ}C$ to simulate lightning. After a week,they observed the formation of simple amino acids like glycine,alanine,and aspartic acid. Thus,the correct component in the mixture is methane $(CH_4)$.

Miller successfully demonstrated the formation of amino acids by electric discharge in a mixture of hydrogen,ammonia,water,and .....

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