JEE Main 202126 AugustMorning Shift
- Exam
- JEE Main
- Year
- 2021
- Date
- 26 August
- Shift
- Morning Shift
- Subject
- Chemistry
- Chapter
- Polymers
JEE Main 2021 · 26 August · Morning Shift · Chemistry · Polymers
The polymer formed on heating Novolac with formaldehyde is:
The polymer formed on heating Novolac with formaldehyde is:
Options
- APolyester
- BBakelite
- CNylon-
- DMelamine
Correct answer
B. Bakelite
Step-by-step solution
Novolac on heating with formaldehyde undergoes cross-linking to form an infusible solid mass called Bakelite. It is a thermosetting polymer that cannot be reused or remoulded. Bakelite is used for making combs, phonograph records, electrical switches, and handles of various utensils