Question

What was the mixture of gases used in chamber marked $A$?

• A. Methane $\left(C{H}_4\right)$, ammonia $\left(N{H}_3\right)$, hydrogen $\left(H_2\right)$ and water $\left(H_{2}O\right)$
• B. Oxygen $\left(O_2\right)$, ammonia $\left(N{H}_3\right)$, hydrogen $\left(H_2\right)$ and water $\left(H_{2}O\right)$
• C. Oxygen $\left(O_2\right)$, ozone $\left(O_3\right)$, hydrogen $\left(H_2\right)$ and water $\left(H_{2}O\right)$
• D. All of the above

Answer 1

The correct option is A Methane $\left(C{H}_4\right)$, ammonia $\left(N{H}_3\right)$, hydrogen $\left(H_2\right)$ and water $\left(H_{2}O\right)$

Stanley L. Miller and his teacher Harold C. Urey provided first experimental evidence for the chemical evolution by designing an apparatus and simulating prebiotic conditions. The primitive atmosphere chiefly consisting of methane, ammonia, water vapour, hydrogen gas, nitrogen gas and carbon monoxide and dioxide was a reducing atmosphere. So they both used the similar gases to create a primitive environment. Thus, the correct answer is option A.