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-p-Block elements - I — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry-p-Block elements - I1 Mark
MCQ
Which of the following compound forms silicones on hydrolysis ?
  • ✓
    $(CH_3)_2SiCl_2$
  • B
    $(SiH_3)_3N$
  • C
    $SiCl_4$
  • D
    All
✓

Answer

Correct option: A.
$(CH_3)_2SiCl_2$
a
Silicones are a group of organosilicon polymers, which have $\left(-\mathrm{R}_{2} \mathrm{SiO}-\right)$ as a repeating unit.

The starting materials for the manufacture of silicones are alkyl or aryl substituted silicon chlorides, $\mathrm{R}_{\mathrm{n}} \mathrm{SiCl}_{(4-\mathrm{n})}$, where $\mathrm{R}$ is alkyl or aryl group.

On hydrolysis of this alkyl or aryl substituted silicon chlorides the silicones are formed.

Among given options, option A is the only alkyl substituted silicone chloride and hence it is correct answer.

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