To get the silicone R3Siā(OSiR2)nāSiR3 having 4 Si-O-Si linkage, the unit taken is:
A
4 units of R2SiCl2 and 2 units of R3SiCl
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B
2 units of R2SiCl2 and 2 units of R3SiCl
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C
3 units of R3SiCl and 2 units of R2SiCl2
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D
3 units of R2SiCl2 and 2 units of R3SiCl
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Solution
The correct option is D 3 units of R2SiCl2 and 2 units of R3SiCl R3SiClhydrolysis−−−−−−→R3Si(OH)R2SiCl2hydrolysis−−−−−−→R2Si(OH)2 Thus, 2 units of R3SiCl and 3 units of R2SiCl2 are required.