The INCORRECT statement about the silicones is · ABC26IN0473
Subject: Inorganic Chemistry · Chapter: Main Group Elements · Topic: Main Group Element – General · Exam: GATE 2005-2021 · Marks: 2 · Difficulty: Easy
The INCORRECT statement about the silicones is
(a)They are thermally unstable because of the $\mathrm{Si}-\mathrm{C}$ bond.
(b)They are insoluble in water.
(c)They are organosilicon polymers
(d)They have stable silica-like skeleton $(-\mathrm{Si}-\mathrm{O}-\mathrm{Si}-\mathrm{O}-\mathrm{Si}-)$
Answer
Answer: A ✓ checked by 4AB · confidence high
The source book printed no answer; this one was worked out and checked — see the explanation.
Explanation
Silicones are thermally stable — the Si–O–Si backbone (and the Si–C bonds) survive high temperatures; that is why they are used as high-temperature lubricants and sealants. The other three statements are true.