1.

Formation of nylons and polyestersare called step growth polymerisation because

Answer»

the POLYMERS are formed by ADDING a monomer step by step
the polymers are formed by condensation and monomers are joined by loss of SIMPLE molecules like water
the monomers USED for condensation are unsaturated molecules
the polymers are formed byaddition of a large number of free readicals formed by monomers .

ANSWER :B


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