Physical Chemistry-Polymer Chemistry [CSIR (Council of Scientific & Industrial Research) Chemical Sciences]: Questions 1 - 5 of 5
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Question 1
Appeared in Year: 2012
Question MCQ▾
A polymer sample has following composition:
No. of molecules | Molecular weight |
10 | 1000 |
50 | 2000 |
40 | 4000 |
Polydispersity Index of polymer is: (December)
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 2
Question MCQ▾
Molar masses of monodisperse and polydisperse polymers obey: (CSRD MHRD Sample Paper Question)
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 3
Appeared in Year: 2015
Question MCQ▾
Correct expression for product [ and are number average and weight average molar masses, respectively, of a polymer is] (June)
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 4
Appeared in Year: 2020
Question MCQ▾
The -intercept obtained from the plot of viscosity of a series of polymer solutions against the concentration is . The proportionality constant and exponent a for this polymer - solvent pair are and , respectively. The molar mass of the polymer in is
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 5
Appeared in Year: 2020
Question MCQ▾
The degree of polymerization at of a polymer formed by a stepwise process with polymerization rate constant of and an initial monomer concentration of is
Choices
Choice (4) | Response | |
---|---|---|
a. | 65 | |
b. | 55 | |
c. | 505 | |
d. | 550 |