Q21 / 125 · BITSAT 2020 · Chemistry

Identify the incorrect statement:

  • A
    In $\left(\mathrm{Si}_{3} \mathrm{O}_{9}\right)^{6-},$ tetrahedral $\mathrm{SiO}_{4}$ units share two oxygen atoms.
  • Correct answer
    B
    Trialkylchlorosilane on hydrolysis gives $\mathrm{R}_{3} \mathrm{SiOH}$
  • C
    $\mathrm{SiCl}_{4}$ undergoes hydrolysis to give $\mathrm{H}_{4} \mathrm{SiO}_{4}$.
  • D
    $\left(\mathrm{Si}_{3} \mathrm{O}_{9}\right)^{6-}$ has cyclic structure.

Solution

The hydrolysis of Trialkylchlorosilane $\mathrm{R}_{3} \mathrm{SiCl}$ yields dimer: Figure

Hence, the correct answer is option: 'B'.

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