NTA Abhyas 2020
- Exam
- NTA Abhyas
- Year
- 2020
- Subject
- Chemistry
- Chapter
- Polymers
NTA Abhyas 2020 · Chemistry · Polymers
Under hydrolytic conditions, the compounds used for preparation of...
Under hydrolytic conditions, the compounds used for preparation of linear polymer and for chain termination, respectively, are
Options
- A\text{C}{\text{H}_{3}\text{SiC}{\text{l}_{3}{Si\left(C{H}_{3}\right)}_{4}
- B and
- C{\left(C{H}_{3}\right)}_{2}SiC{l}_{2} and \text{C}{\text{H}_{3}\text{SiC}{\text{l}_{3}
- D\text{SiC}{\text{l}_{4}{\left(C{H}_{3}\right)}_{3}SiCl
Correct answer
B. and
Step-by-step solution
Under hydrolytic conditions, the compound used for the preparation of linear polymer and for chain termination are ( \text{C}{\text{H}_{3}{)}_{2}\text{SiC}{\text{l}_{2} and ( \text{C}{\text{H}_{3}{)}_{3}\text{SiCl} respectively.
The hydrolysis of dimethyldichlorosilane gives dimethyl silane diol which on condensation polymerization forms a linear polymer.
The hydrolysis of trimethylchlorosilane gives trimethyl silanol which can not undergo polymerization as it contains only one -OH group so it is used for chain termination.
The hydrolysis of dimethyldichlorosilane gives dimethyl silane diol which on condensation polymerization forms a linear polymer.
The hydrolysis of trimethylchlorosilane gives trimethyl silanol which can not undergo polymerization as it contains only one -OH group so it is used for chain termination.