Medicinal Chemistry PYQs – Set 59
Subject : Medicinal Chemistry
1161. Carvedilol is a mixture of how many enantiomers
Medicinal Chemistry • • NIPER 2020
1162. Which is the most stable structure of 1-isopropyl-4-methylcyclohexane?
Medicinal Chemistry • • NIPER 2020
1163. Furan is aromatic. What is the value of Hukel's n in it?
Medicinal Chemistry • • NIPER 2020
1164. Ketone on reduction gives
Medicinal Chemistry • • NIPER 2020
1165. Which of the following is the strongest activating group in electrophilic aromatic substitution reactions?
Medicinal Chemistry • • NIPER 2020
1166. Alogliptin, saxagliptin, vildagliptin have a structural feature common that is responsible for reaction with DPP-4. What is that
Medicinal Chemistry • • NIPER 2020
1167. What is the relationship between the following two structures?
Medicinal Chemistry • • NIPER 2020
1168. Which heteroyclic rings are present in nicotine
Medicinal Chemistry • • NIPER 2020
1169. Among the butane conformers, which occur at energy minima on a graph of potential energy versus dihedral angle
Medicinal Chemistry • • NIPER 2020
1170. A thermodynamically-controlled reaction will yield predominantly the
Medicinal Chemistry • • NIPER 2020
1171. IUPAC of carbamazepine is
Medicinal Chemistry • • NIPER 2020
1172. How many chiral centers are present in one molecule of camphor?
Medicinal Chemistry • • NIPER 2020
1173. In one of the following sulfonamides, pyrimidine ring is absent. Which is it?
Medicinal Chemistry • • NIPER 2020
1174. Histamine structure is represented by:
Medicinal Chemistry • • NIPER 2020
1175. This reaction mechanism is favored by 3° substrates, low temperatures, polar solvents, and low concentrations of very weak bases.
Medicinal Chemistry • • NIPER 2020
1176. Which of the following functional groups is a classical isostere for -CH=?
Medicinal Chemistry • • NIPER 2020
1177. Roll-tube technique is the modification of :
Microbiology • Anaerobe culture methods • NIPER 2020
1178. 5Fluorocytosine is converted to its active metabolite 5fluorouracil by which fungal enzyme?
Microbiology • Antifungal prodrugs • NIPER 2020
1179. Which disinfectant effectively destroys vegetative bacterial cells, including Gram‑positive and Gram‑negative bacteria, bacterial endospores, fungi, and viruses?
Microbiology • Antimicrobial Agents • NIPER 2020
1180. The most commonly used test of sensitivity to an antimicrobial agent is
Microbiology • Antimicrobial Testing • NIPER 2020
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