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Which of the following bases contain two keto groups?

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in Chemistry – Class 12 by (188k points)
Which of the following bases contain two keto groups?

(a) Adenine

(b) Guanine

(c) Thymine

(d) Cytosine

I had been asked this question in an interview.

This intriguing question comes from Biomolecules in portion Biomolecules of Chemistry – Class 12

1 Answer

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Best answer
Right choice is (c) Thymine

Best explanation: Bases are nitrogen containing heterocyclic compounds present in nucleic acids. Adenine has no keto group, guanine and cytosine have one keto group each, and thymine and uracil have two keto groups in their rings.

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