TLS Online TPP Program

#Question id: 26413


Which of the following positions is more prone to tautomerism

#Unit 3. Fundamental Processes
  1. 4 & 5 of pyrimidines 1 & 6 of purines
  2. 3 & 4 of pyrimidines 4 & 5 of purines 
  3. 6 & 4 of pyrimidines 2 & 3 of purines 
  4. 3 & 4 of pyrimidines 1 & 6 of purines