Physical Chemistry-Polymer Chemistry (CSIR Chemical Sciences): Questions 1 - 3 of 3

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Question number: 1

» Physical Chemistry » Polymer Chemistry » Kinetics of Polymerization

Appeared in Year: 2012

MCQ▾

Question

A polymer sample has following composition:

Table showinh the Number of molecules and molecular weight

Number of molecules and molecular weight

No. of molecules

Molecular weight

10

1000

50

2000

40

4000

Polydispersity Index of polymer is: (December)

Choices

Choice (4) Response
a.

729850

b.

8581

c.

8500027

d.

850729

Question number: 2

» Physical Chemistry » Polymer Chemistry » Molar Masses

MCQ▾

Question

Molar masses of monodisperse and polydisperse polymers obey: (CSRD MHRD Sample Paper Question)

Choices

Choice (4) Response
a.

M¯n=M¯wandM¯n=M¯w

b.

M¯n=M¯wandM¯n<M¯w

c.

M¯n<M¯wandM¯n<M¯w

d.

M¯n>M¯wandM¯n<M¯w

Question number: 3

» Physical Chemistry » Polymer Chemistry » Molar Masses

Appeared in Year: 2015

MCQ▾

Question

Correct expression for product [(M¯n).(M¯w)] [ M¯n and M¯w are number average and weight average molar masses, respectively, of a polymer is] (June)

Choices

Choice (4) Response
a.

N1iNiMi

b.

NiNiMi

c.

N1iNiMi2

d.

NiNiMi2

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