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Biology · 2026 · 3 marks
CBSE 2026 · Region 2 · Set 1 · Q26
S.L. Miller conducted an experiment in 1953 to simulate the conditions of early earth in a laboratory setup. Answer the following questions based on…
S.L. Miller conducted an experiment in $\displaystyle 1953$ to simulate the conditions of early earth in a laboratory setup. Answer the following questions based on the experiment :
(a)
What was the aim of his experiment?
(b)
Name the gases used and the source of energy.
Marking-scheme solution
(a)
To prove that formation of life was preceded by chemical evolution/ organic molecules can form spontaneously from inorganic molecules
(b)
$\displaystyle \star$ Gases used: CH4, NH3, H2, Water vapours.
$\displaystyle \star$ Source of energy - Electric discharge
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