1. CH₄ , H₂ , NH₃ and water vapor at 800°C 2. CH₃ , H₂ , NH₄ and water vapor at 800°C 3. CH₄ , H₂ , NH₃ and water vapor at 600°C 4. CH₃ , H₂ , NH₃ and water vapor at 600°C

Answer: 1. CH₄ , H₂ , NH₃ and water vapor at 800°C Key idea: Miller used the gases thought to be in the early atmosphere. He mixed CH₄ , H₂ , NH₃ and water vapour at 800°C with electric discharge. Options with CH₃ or NH₄ are not real gases and 600°C is incorrect.

Topic: Origin of life· Genetics and Evolution

From his experiments, S.L. Miller produced amino acids by mixing the following in a closed flask :

1. \(CH_4\), \(H_2\), \(NH_3\) and water vapor at 800°C

2. \(CH_3\), \(H_2\), \(NH_4\) and water vapor at 800°C

3. \(CH_4\), \(H_2\), \(NH_3\) and water vapor at 600°C

4. \(CH_3\), \(H_2\), \(NH_3\) and water vapor at 600°C

Doubtly Asked 30 Oct 2026 NEET UG 2020 Practice test neet Save WhatsApp Report

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Answer: 1. \(CH_4\), \(H_2\), \(NH_3\) and water vapor at 800°C

Key idea: Miller used the gases thought to be in the early atmosphere.

He mixed \(\mathrm{CH_4}\), \(\mathrm{H_2}\), \(\mathrm{NH_3}\) and water vapour at 800°C with electric discharge. Options with \(\mathrm{CH_3}\) or \(\mathrm{NH_4}\) are not real gases and 600°C is incorrect.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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From his experiments, S.L. Miller produced amino acids by mixing the following in a closed flask :

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