Chemistry Class 12
Solutions to CBSE Sample Paper - Chemistry Class 12

The sample of a virus was tested and it was found to contain 20% adenine, 20% thymine, 20 % guanine and the rest cytosine. Is the genetic material of this virus (a) DNA- double helix (b) DNA-single helix (c) RNA? What do you infer from this data?



A = T = 20%

But G is not equal to C so double helix is ruled out.

The bases pairs are ATGC and not AUGC so it is not RNA

The virus is a single helix DNA virus

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.