Asymmetric Synthesis and Bio -Organic Chemistry MCQ Unit-1 M.Sc. Chemistry Sem.III

 M. Sc.  Organic Chemistry Sem.III 

CHEO-315

 Asymmetric Synthesis and Bio - Organic Chemistry 

Third Semester-III

 UNIT – I

Introduction to Bioorganic chemistry Basic concepts, Proximity effects in organic chemistry, Molecular adaptation, Molecular recognition.

Multiple Choice questions:-

1. Proximity effect in bioorganic chemistry related with
a)  Increase in rate of reaction
b) Increase in enzyme substrate interaction
c)  Reduces the entropy of reaction
d) All of these

2. Rate of reaction depends upon
a)  Number of collisions
b) Energy of molecules
c)  Orientation of molecules
d) All of these

3. Which of the following species brings substrate and catalytic group together?
a)  Molecule
b) Enzyme
c)  Cofactors
d) None of these

4. due to proximity effect …….
a) Similar intramolecular reactions are faster than intermolecular reaction
b) Similar intermolecular reaction are faster than the intramolecular reaction
c)  Both a and b
d) None of these

5. The interaction between two or more molecules through no covalent bonding called as
a)  Molecular reorganization
b) Molecular recognition
c)  Proximity effect
d) Molecular modelling

6. Which of the following attraction is not molecular recognition
a)  Pi Pi interaction
b) Vander wall forces
c)  Hydrophobic forces
d) None of these

7. Classical example of intramolecular recognition is
a)  Host-guest chemistry
b) Supramolecular chemistry
c)  Protein folding
d) All of these

8. Molecular recognition divided into
a) Two classes
b) Three classes
c)  Four classes
d) Five classes

9. Correct name of the given compound

a)  12 crown 4
b) 14cown 4
c)  15 crown 4
d) 12 crown 6

 10. Optimum ring size of crown Ether Na+ complexation
a) 15-18
b) 18
c)  18-21
d) 21-25

11. Which of the following species used as a chemical sensor
a)  Chromoionophores
b) Fluoroinophores
c) Both a and b
d) None of these

12. Transamination reaction require the cofactor
a)  Monophosphate
b) Pyridoxal phosphate
c)  Phosphate buffer
d) All of these

13. Scientist who prepared Crown Ether first
a)  Jean-marie
b) Charles Pederson
c)  Donald Cram  

d) Alfred crown

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