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150+ Medicinal Chemistry 1 Solved MCQs

These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Bachelor of Pharmacy (B. Pharma) , Pharmacy .

Chapters

Chapter: Introduction, History and development of Medicinal Chemistry
1.

Aspirin is introduced by_________in 1889

A. Dreser's
B. Emil Fischer and Mering
C. Barger and Dale
D. None of above
Answer» A. Dreser's
2.

First hormone epinephrine was synthesized in Year

A. 1903
B. 1904
C. 1909
D. 1889
Answer» B. 1904
3.

Who is founder of modem medicine?

A. Hippocartes
B. Clark
C. Charak
D. Henry's
Answer» A. Hippocartes
4.

Identification of a new chemical entity as a potential therapeutic agent (From Hit to Lead) is known as

A. Drug discovery
B. Drug development
C. Both of above
D. None of above
Answer» A. Drug discovery
5.

The process of bringing a new pharmaceutical drug to the market once the lead compound has been identified through the process of drug discovery. (From Lead to NDA) is known as

A. Drug discovery
B. Drug development
C. Both of above
D. None of above
Answer» B. Drug development
6.

Natural products or derivatives or synthetic substances with good binding ability in Drug discovery is known as

A. Hit
B. Lead
C. NDA
D. IND
Answer» A. Hit
7.

Compound with good activity and selectivity in screening during drug discovery is known as

A. Hit
B. Lead
C. NDA
D. IND
Answer» B. Lead
8.

The main goals of pre-clinical studies

A. To determine the safe dose for first-in-man study
B. To assess a product's safety profile
C. A and B both
D. None
Answer» C. A and B both
9.

IND stands for

A. Improved new drug
B. Investigational new drug
C. International new drug
D. International novel drug
Answer» B. Investigational new drug
10.

Human micro dosing studies conducted in which clinical phase ?

A. Phase 0
B. Phase I
C. Phase II
D. Phase III
Answer» A. Phase 0
11.

MTD is

A. Maximum targeted dose
B. Minimum tolerated dose
C. Minimum targeted dose
D. Maximum tolerated dose
Answer» D. Maximum tolerated dose
12.

Single ascending dose studies are done in_____

A. Phase lb
B. Phase Ia
C. Phase II
D. Phase Ila
Answer» B. Phase Ia
13.

NDA is

A. New Drug Application
B. New Drug approval
C. Noval Drug Admistration
D. New Drug agenda
Answer» A. New Drug Application
14.

Phase IV trial is also known

A. Base of clinical trial
B. Multiple ascending dose era
C. Post marketing Surveillance
D. Pre-clinical trial
Answer» C. Post marketing Surveillance
15.

How many people will be selected for phase I trial?

A. The whole market will be under surveillance
B. 300-3000 people
C. 20-300 people
D. 20-50 people
Answer» D. 20-50 people
16.

How many people will be selected for phase II trial?

A. The whole market will be under surveillance
B. 300-3000 people
C. 20-300 people
D. 20-50 people
Answer» C. 20-300 people
17.

How many people will be selected for phase III trial?

A. The whole market will be under surveillance
B. 300-3000 people
C. 20-300 people
D. 20-50 people
Answer» B. 300-3000 people
18.

Which one of the following will be checked under phase IV surveillance?

A. The whole market will be under surveillance
B. 300-3000 people
C. 20-300 people
D. 20-50 people
Answer» A. The whole market will be under surveillance
19.

Precision Medicine is an emerging approach depending on

A. Genomic study of individual
B. Diagnostic process of individual
C. Diseases conditions
D. None of above
Answer» A. Genomic study of individual
20.

How many main families of GPCRs are there?

A. 5
B. 6
C. 7
D. 4
Answer» B. 6
21.

Which of the following reactions is catalyzed by the enzyme adenylate cyclase?

A. Conversion of ATP to cyclic AMP
B. Conversion of cyclic AMP to AMP
C. Conversion of cyclic AMP to ATP
D. Conversion of AMP to cyclic AMP
Answer» A. Conversion of ATP to cyclic AMP
22.

Oxadiazole ring contains

A. 1 Nitrogen /Oxygen
B. 2 Oxygen/ Nitrogen
C. 2 Nitrogen/Sulphur
D. 2 Nitrogen/Oxygen
Answer» D. 2 Nitrogen/Oxygen
23.

The hetroaromatic redical is called

A. Anthryl
B. Naphthyl
C. Phenanthryl
D. Dibenzyl
Answer» B. Naphthyl
24.

Name of this aromatic ring is

A. Diphenylmethyl ethane
B. 2-ethyl-1-methyl naphthalene
C. 1-ethyl-2-methyl naphthalene
D. 1-ethyl-1-methyl naphthalene
Answer» C. 1-ethyl-2-methyl naphthalene
25.

Name of this aromatic ring is

A. Azopane
B. Azepine
C. Azepane
D. None of above
Answer» C. Azepane
26.

Which of the following statements best describes pharmacodynamics?

A. The study of how drugs reach their target in the body and how the levels of a drug in the blood are affected by absorption, distribution, metabolism and excretion.
B. The study of how drugs can be designed using molecular modelling based on a drug's pharmacophore.
C. The study of how a drug interacts with its target binding site at the molecular level.
D. The study of which functional groups are important in binding a drug to its target binding site and the identification of a pharmacophore.
Answer» C. The study of how a drug interacts with its target binding site at the molecular level.
27.

Which of the following statements best describes pharmacokinetics?

A. The study of how drugs reach their target in the body and how the levels of a drug in the blood are affected by various factors.
B. The study of how drugs can be designed using molecular modelling based on a drug's pharmacophore.
C. The study of how a drug interacts with its target binding site at the molecular level.
D. The study of which functional groups are important in binding a drug to its target binding site and the identification of a pharmacophore.
Answer» A. The study of how drugs reach their target in the body and how the levels of a drug in the blood are affected by various factors.
28.

What are soft drugs?

A. Drugs given to babies
B. Chemical drugs which are already found in the body
C. Nutrients which kill the gut harmful microbes
D. Anything that is not nutrients and enters the body through different routes
Answer» B. Chemical drugs which are already found in the body
Chapter: Physicochemical properties in relation to biological action
29.

The most important physicochemical properties affecting drug action
a) Partition coefficient
b) Solubility
c) Acid base properties
d) Chemical bonding
e) Chelation
f) Surface activity

A. All of the above
B. A and B both
C. D and E both
D. C and F both
Answer» A. All of the above
30.

In QSAR, study of medicinal chemistry Q stands for

A. Qualitative
B. Quantitative
C. Both
D. Quantam
Answer» B. Quantitative
31.

Dimercaprol is a chelating agent used in the treatment of

A. Arsenic poisoning
B. Lead poisoning
C. Iron poisoning
D. Vanadium poisoning
Answer» A. Arsenic poisoning
32.

The non-polar compound dispersed

A. By forming hydrogen bonding
B. By interacting with lipid
C. By forming drug receptor complex
D. by forming hydrophilic bond
Answer» B. By interacting with lipid
33.

pka is a parameter which indicates the

A. Strength of drug as acid base reaction in water
B. Aqueous phase in phosphate buffer
C. Hydrophilic and lyphophilic character
D. All of the above
Answer» D. All of the above
34.

85% of drugs are ionizied in which pH-

A. 2-5
B. 7-12
C. 1.5-8
D. Neutral
Answer» C. 1.5-8
35.

Bioisoterism is the process of

A. Replacement similar group
B. Replacement similar valence group
C. Replacement similar mass no. group
D. Addition of group having different mass no.
Answer» B. Replacement similar valence group
36.

A drug like phenytoin & barbiturate when pka is larger than 7 is

A. Ionised at all pH
B. unionised at pH
C. Ionised at pH 8
D. Unionised at pH 6
Answer» D. Unionised at pH 6
37.

A drug where pka is 7 & unionised at all pH it is

A. Weak acidic
B. Very weak acidic
C. Weak basic
D. Very weak basic
Answer» B. Very weak acidic
38.

Dissolution & pka helps in drug

A. ionization & solubility
B. dissociation & transportation
C. Dissociation & solubility
D. None of these
Answer» C. Dissociation & solubility
39.

Bioisosteres are similar in their

A. Physical character
B. Chemical character
C. Both character a & b
D. Biochemical character
Answer» C. Both character a & b
40.

Which of the following is not a bivalent?

A. CO
B. CS
C. CC
D. SH
Answer» D. SH
41.

A molecule having 3 chiral centre carbon it has

A. 4 set of diasters
B. 9 set of enantiomers
C. 6 set of monomers
D. 9 set of diasters
Answer» B. 9 set of enantiomers
42.

The 3D structure elucidation is done by process

A. IR
B. FTIR
C. NMR
D. MS
Answer» C. NMR
43.

Which of the following is odd one regarding drug-receptor interaction

A. Hydrogen bonding
B. Electrostatic
C. Weak Wander wall Force
D. Dipole- induced dipole interaction
Answer» D. Dipole- induced dipole interaction
44.

Which of the following is a fastest receptor

A. Enzyme linked
B. Ion- gated
C. GPCR
D. Nuclear
Answer» C. GPCR
45.

Which of the following is not an optically isomer

A. Enantiomers
B. Epimers
C. Disasters
D. Meso
Answer» A. Enantiomers
46.

Enantiomer has a higher affinity to receptor are called

A. Eudismic
B. Diastomer
C. Eutomer
D. None of these
Answer» A. Eudismic
47.

Which type of hydrogen bonding present when hydrogen bonding occurs between molecules?

A. Intramolecular
B. Intermolecular
C. A & B both
D. None of them
Answer» B. Intermolecular
48.

Which compound is capable of forming a ring structure with metal atoms?

A. Ligands
B. Chelates
C. Surfactants
D. All of the above
Answer» B. Chelates
49.

For dissolution of solute in solvent which condition is necessary?
1. Solute-solvent interaction should be less than solute-solute and solvent-solvent interaction
2. Solute-solvent interaction should equal solute-solute and solvent-solvent interaction
3. Solute-solvent interaction should exceed solute-solute and solvent-solvent interaction

A. 1 & 2
B. 2 & 3
C. 1 & 3
D. 1, 2 & 3
Answer» B. 2 & 3
50.

Addition of polar group in a drug increases its interaction with

A. Water
B. Lipid
C. Both
D. None
Answer» A. Water

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