Chemistry (M.Phil./Ph.D.) 2020 Panjab University Entrance Exam With Answers

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34.

The correct expression for the product {(Mn).(Mw)} [Mn and Mw are the number average and weight average molar masses, respectively, of a polymer] is

A: N-1∑iNi Mi
B: N-1∑iNi Mi2
C: N / ∑i (Ni Mi)
D: N / ∑i (Ni Mi2)

The answer is: B

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