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 |
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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)....
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