NEET
Biology
The Living World / जीव जगत
Question Bank
Origin of Life
question_answer
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]