51. Type of ring structures present in the structure of diazepam?
a) Quiniclidine
b) Quinoline
c) Diazepine
d) All of the above

52. Correct sequence for the True/False for the physiochemical properties of the drugsolifenacin?
I. Molecular weight is 284.74 gm/mol
II. Colorless to yellow crystalline compound
III. Melting point is between 132°C
IV. Diazepine ring is present
a) TFTF
b) TTTT
c) FFFF
d)FFFT

53. Correct statements for the IUPAC nomenclatures of the are?
I. Solifenacin: (3R)-1-Azabicyclo[2 2 2]oct-3-yl (1S)-1-phenyl-3,4-dihydroisoquinoline-2(1H)-carboxylate
II. Zaleplon: N-(3-(3-cyanopyrazolo[1,5-a] pyrimidin-7-yl)phenyl)-N-ethylacetamide
III. Alprazolam: 7-Chloro-1,3-dihydro-1-methyl-5-phenyl-3H-1,4-benzodiazepin-2-one
IV. Diazepam: 8-Chloro-1-methyl-6-phenyl-4H-[1,2,4]triazolo[4,3-a] [1,4]benzodiazepine
a) II, IV
b) I, II
c) I, III, IV

d) I, II, III, IV

54. Match the following drugs with their correct classificationsi.

Solifenacin A. Barbiturate sedative-hypnotic
ii. Thiobarbital B. Benzodiazepine sedative-hypnotic
iii. Diazepam C. Acetylcholine antagonist
iv. Zaleplon D. Nonbenzodiazepine sedative-hypnotic
a) i-C, ii-A, iii-B, iv-D
b) i-B, ii-C, iii-A, iv-D
c) i-D, ii-A, iii-C, iv-B
d) i-A, ii-C, iii-B, iv-D

55. Choose the correct statements related to the physicochemical properties of drug secobarbital-
I. Molecular weight is 238.28 gm/mol
II. White amorphous crystalline powder
III. It is very soluble in water
IV. Melting point is 325K
a) I, II
b) I, II, III
c) III, IV
d) I, III, IV