The-Living-World Question 662
Question: Which of the following was most likely to have been absent in free form in the primordial atmosphere at the time of origin of life [CPMT 1974, 76, 78, 82, 90, 98; AFMC 1985; NCERT 1971, 72; KCET 1998; MP PMT 1994, 99; CBSE PMT 2004; BVP 2004; BCECE 2005]
Options:
A) $ O_2 $
B) $ CH_4 $
C) $ H_2 $
D) $ NH_3 $
Show Answer
Answer:
Correct Answer: A
BETA
