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Q.

Which of the following statements is not correct?

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a

The durability and inertness of silicones is due to the high bond enthalpy of Si—O bond

b

Silicon rubbers are excellent electrical insulators

c

Silicon rubbers are excellent electrical insulators

d

The silicones always involve cross-linked between Si and O atoms

answer is D.

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Detailed Solution

Cross-linking between Si and O atoms is a constant component of silicones. The primary component utilised in the creation of pure cross-linked silicon polymer is trichlorosilane. It quickly breaks down in water, producing a silicone polymer and releasing hydrochloric acid.

RSiCl3 + H2O  RSi(OH)3 + HCl

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