Welcome to the NCERT Solutions for Class 12 Chemistry - Chapter Polymers. This page offers a step-by-step solution to the specific question from Exercise 2, Question 12: . With detailed answers and explanations for each chapter, students can strengthen their understanding and prepare confidently for exams. Ideal for CBSE and other board students, this resource will simplify your study experience.
Write the monomers used for getting the following polymers. (i) Polyvinyl chloride (ii) Teflon (iii) Bakelite
1) Polyvinyl chloride (PVC) - The monomeric unit present is vinyl chloride (CH2 =CH –Cl). PVC is used in the manufacture of rain coats, curtain cloths, hand bags, toys, artificial flooring, gramophone records and as a good insulating material in wires and other electrical goods.
2) Teflon (PTFE) - The monomeric unit present is tetrafluoroethene (n F2C = CF2). Teflon is used as a material resistant to heat and chemical attack. It is also used for making gaskets, pump packings, valves, oil seals, non -lubricated bearings.
3) Bakelite - The monomeric unit present is formaldehyde (HCHO) and phenol (C6H5OH). Bakelite is used for making glue for binding laminated wooden planks and in varnishes, combs, fountain pens, electrical switches.
The reaction between A and B is first order with respect to A and zero order with respect to B. Fill in the blanks in the following table:
| Experiment |
A/ mol L - 1 |
B/ mol L - 1 |
Initial rate/mol L - 1 min - 1 |
| I | 0.1 | 0.1 |
2.0 × 10 - 2 |
| II | -- | 0.2 |
4.0 × 10 - 2 |
| III | 0.4 | 0.4 | -- |
| IV | -- | 0.2 |
2.0 × 10 - 2 |
NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:
Stay updated with our latest educational content and study tips
Have you ever noticed that doing activities such as playing outdoors, chilling with your friends, or using the mobile phone feels so effortless and fun? Whenever you might have played sports, you kept on playing even when it felt hard initially just so you could get that feeling after the game, a feeling of accomplishment, … Read more
Read MoreImagine this; You’re sitting in the test hall, pen in hand, and the question paper has been put in front of you. Rather than freezing, you feel calm, collected, and set. Why? As you have formerly been there in your mind. You’ve seen yourself sitting composibly, reviewing the question paper fluently, performing well in the … Read more
Read MoreParent-Teacher Meetings (PTMs) are more than quick updates on marks — they’re a chance to build a real partnership between home and school. A good Parent-Teacher Meeting conversation helps parents see beyond grades. It opens up insights about a child’s strengths, struggles, emotions and even hidden talents. When parents participate actively, they don’t just track … Read more
Read MoreIn today’s world of endless information , knowing how to think is more important than knowing what to think . From school projects to real – life decisions , critical thinking helps students question ideas , analyze facts and form logical conclusions . But what exactly does critical thinking mean ? Simply put , it’s … Read more
Read MoreWelcome to the NCERT Solutions for Class 12 Chemistry - Chapter . This page offers a step-by-step solution to the specific question from Excercise 2 , Question 12: Write the monomers used for getting the following polymers. (i) Polyvinyl chloride (ii) Teflon (iii)....
Comments
Thanks
Hai
Thanks sir
ThXxxx sir/madam
Thanks sir
Thanku
Thanku
Sir glyptal ka nai bataye
Thanks sir
thanks sir