POLYMERS Quiz-2

 

POLYMERS Quiz-2

Dear Readers,

IIT JEE exam which consists of JEE Main and JEE Advanced is one of the most important entrance exams for engineering aspirants. The exam is held for candidates who are aspiring to pursue a career in the field of engineering and technical studies. Chemistry is important because everything you do is chemistry! Even your body is made of chemicals. Chemical reactions occur when you breathe, eat, or just sit there reading. All matter is made of chemicals, so the importance of chemistry is that it's the study of everything..

Q1. The commercial name of polymethyl (methacrylate) is: :

•  Lucite
•  Plexiglas
•  Perspex
•  All the above

Solution
option d

Q2. Bakelite is:

•  Chain-growth polymer
•  Step-growth polymer
•  Both (a) and (b)
•  Elastomer

Solution
option b

Q3. GuttaPercha is:  

•   trans-Polyisoprene
•  Non-elastic and softens to a plastic-like material on heating
•  Used in underwater cables and golf balls
•  All the above

Solution
option d

Q4. Which of the following is the biodegradable polymer of polyamide class? 

•  Nylon-6, 6
•  Nylon-2-nylon-6
•  Dextran
•  PHBV

Solution
option b

Q5. Isoprene

is the repeating unit in:

 

 

•  Vitamin A
•  Terpenes
•  Rubber (natural)
•  Rubber (natural)

Solution
 option d

Q6. Mass-average molecular mass of a polymer is determined by: 

•  Light scattering and ultracentrifuge method
•  Osmotic pressure
• Depression of freezing point
•  Elevation in boiling point

Solution
option a

Q7.Identify (X):

 

•  

   

•  

   

•  

   

•  

   

Solution
option a

Q8. Which of the following is used in paints?:

•  Terylene
•  TChloroprene
•  Glyptal
•  Nylon

Solution
option c

Q9. Molecular weights of macromolecules are determined by:

•  Elevation of boiling point
•  Depression in freezing point
•  Osmotic pressure
•  None of these

Solution
option c

Q10. Polymer used in bullet-proof glass is: 

•  Nomex
•  Lexan
•  PMMA
• Kevlar

Solution
option b