MHT CET 2025 Chemistry question

What are the positions of 'N' atoms present in pyrimidine ring of nucleic acids?

(A)1 and 5
(B)1 and 3Correct
(C)1, 3 and 5
(D)3 and 5

Answer: (B)

Solution

Pyrimidine (the parent heterocycle of cytosine, thymine and uracil) is a six-membered aromatic ring with four carbon atoms and two nitrogen atoms placed meta to each other, i.e. 1,3-diazine, with nitrogen

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Question ID VK-101185