Q20 of 31 Page 1

A. What is the role of benzoyl peroxide in the polymerization of ethane?

B. Identify the monomers in the following polymer:



C. Arrange the following polymers in the increasing order of their intermolecular forces:


Nylon-6, 6 Polythene, Buna-S

a) Role of benzoyl peroxide in the polymerization of ethane are the following:


⇒ It acts as radical initiator.


⇒ These initiator molecules readily decompose on mild heating to form initiator free radicals.


b) The monomers are adipic acid and hexamethylene diamine.



c) buna S < polythene < nylon,66


Explanation:


⇒ Polythene and Buna-S are the examples of Addition Polymerization, hence they both have low intermolecular forces


⇒ On the other hand, nylon-6,6 which is an example of condensation polymerization has highest intermolecular force


More from this chapter

All 31 →
18

Given reasons for the following:

A. Protonation of Phenols is difficult whereas ethanol easily undergoes protonation.


B. Boiling point of ethanol is higher than that of dimethyl ether.


C. Anisole on reaction with HI gives phenol and as main products and not iodobenzene and

19

Write the structures of A, B and C in the following reactions:

A.


B.

20

Write the mechanism of free radical polymerization of ethane.

 21

A. Write one reaction of D-Glucose which cannot be explained by its open chain structure.

B. What type of linkage is present in Nucleic acids?


C. Give one example each for water-soluble vitamins and fat-soluble vitamins?