Question: a) Why for Kevlar the Cis Conformation is impossible. Draw the structure , illustrate and explain. b) Differentiate between hydrogen, ionic and covalent bonding. Draw

a) Why for Kevlar the Cis Conformation is impossible. Draw the structure , illustrate and explain.

b) Differentiate between hydrogen, ionic and covalent bonding. Draw and motivate.

c) Give a reaction for the synthesis of Polysulfides.

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