Q6(c). True or false: polymer statements
State whether true or false. If false, give the correct statement. 2×5=10
(i) Polyvinyl alcohol can be prepared by polymerization of vinyl alcohol.
(ii) CH₄ can be polymerized.
(iii) C₂H₂ and aniline cannot be polymerized.
(iv) Polymers have sharp melting point.
(v) Ziegler-Natta catalyst is used for the preparation of syndiotactic polymer.
Model answer
The 2016 solution on this site answers questions 1, 2, 4, 5 and 7, the ones picked in its time plan. This part is not answered on the site yet. New answers are announced on Telegram.
With any Mains test series
Read the key points and the full model answer with a Mains test series
Every Mains test series (Civil Services, IFoS or Geo-Scientist) opens the solved IFoS Mains PYQ answers, the notes, the handbook and the daily answer archive until your Mains. The first test of each series is free. Civil Services and Geo-Scientist Mains PYQ solutions and Geo-Scientist Prelims PYQ solutions are free for everyone.
Coversenol of acetaldehydevinyl acetatehydrolysis (methanolysis)Ziegler–Nattapolyacetylene
All parts of Question 6
- 6(a) Number-average and weight-average molecular weight10 marks
- 6(b) Viscosity-average molecular weight with an Ostwald viscometer10 marks
- 6(c) True or false: polymer statements10 marks
- 6(d) Oligopeptide, polypeptide; secondary structure of proteins10 marks