Silicon and its Compounds
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CHXI11:THE P-BLOCK ELEMENTS

316940 Which of the following is used in surgical and cosmetic plants?

1 Silicones
2 Silicates
3 Silica
4 None of these
CHXI11:THE P-BLOCK ELEMENTS

316941 Which is formed when \(\mathrm{SiCl}_{4}\) vapours are passed over hot \(\mathrm{Mg}\) ?

1 \(\mathrm{SiCl}_{2}+\mathrm{MgCl}_{2}\)
2 \(\mathrm{Si}+\mathrm{MgCl}_{2}\)
3 \(\mathrm{Mg}_{2} \mathrm{Si}+\mathrm{Cl}_{2}\)
4 \(\mathrm{MgSiCl}_{6}\)
CHXI11:THE P-BLOCK ELEMENTS

316942 The structure and hybridisation of \(\mathrm{Si}\left(\mathrm{CH}_{3}\right)_{4}\) is

1 Bent, sp
2 Trigonal, \({\text{s}}{{\text{p}}^{\text{2}}}\)
3 Octahedral, \({\text{s}}{{\text{p}}^{\text{3}}}{{\text{d}}^{\text{2}}}\)
4 Tetrahedral,\({\text{s}}{{\text{p}}^{\text{3}}}\)
CHXI11:THE P-BLOCK ELEMENTS

316943 The gas evolved on heating \(\mathrm{CaF}_{2}\) and \(\mathrm{SiO}_{2}\) with concentrated \(\mathrm{H}_{2} \mathrm{SO}_{4}\), on hydrolysis gives a white gelatinous precipitate. The precipitate is

1 Hydrofluorosilicic acid
2 Silica acid
3 Silicic acid
4 Calciumfluorosilicate
JEE - 2014
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CHXI11:THE P-BLOCK ELEMENTS

316940 Which of the following is used in surgical and cosmetic plants?

1 Silicones
2 Silicates
3 Silica
4 None of these
CHXI11:THE P-BLOCK ELEMENTS

316941 Which is formed when \(\mathrm{SiCl}_{4}\) vapours are passed over hot \(\mathrm{Mg}\) ?

1 \(\mathrm{SiCl}_{2}+\mathrm{MgCl}_{2}\)
2 \(\mathrm{Si}+\mathrm{MgCl}_{2}\)
3 \(\mathrm{Mg}_{2} \mathrm{Si}+\mathrm{Cl}_{2}\)
4 \(\mathrm{MgSiCl}_{6}\)
CHXI11:THE P-BLOCK ELEMENTS

316942 The structure and hybridisation of \(\mathrm{Si}\left(\mathrm{CH}_{3}\right)_{4}\) is

1 Bent, sp
2 Trigonal, \({\text{s}}{{\text{p}}^{\text{2}}}\)
3 Octahedral, \({\text{s}}{{\text{p}}^{\text{3}}}{{\text{d}}^{\text{2}}}\)
4 Tetrahedral,\({\text{s}}{{\text{p}}^{\text{3}}}\)
CHXI11:THE P-BLOCK ELEMENTS

316943 The gas evolved on heating \(\mathrm{CaF}_{2}\) and \(\mathrm{SiO}_{2}\) with concentrated \(\mathrm{H}_{2} \mathrm{SO}_{4}\), on hydrolysis gives a white gelatinous precipitate. The precipitate is

1 Hydrofluorosilicic acid
2 Silica acid
3 Silicic acid
4 Calciumfluorosilicate
JEE - 2014
NEET DIGITAL LIBRARY
CHXI11:THE P-BLOCK ELEMENTS

316940 Which of the following is used in surgical and cosmetic plants?

1 Silicones
2 Silicates
3 Silica
4 None of these
CHXI11:THE P-BLOCK ELEMENTS

316941 Which is formed when \(\mathrm{SiCl}_{4}\) vapours are passed over hot \(\mathrm{Mg}\) ?

1 \(\mathrm{SiCl}_{2}+\mathrm{MgCl}_{2}\)
2 \(\mathrm{Si}+\mathrm{MgCl}_{2}\)
3 \(\mathrm{Mg}_{2} \mathrm{Si}+\mathrm{Cl}_{2}\)
4 \(\mathrm{MgSiCl}_{6}\)
CHXI11:THE P-BLOCK ELEMENTS

316942 The structure and hybridisation of \(\mathrm{Si}\left(\mathrm{CH}_{3}\right)_{4}\) is

1 Bent, sp
2 Trigonal, \({\text{s}}{{\text{p}}^{\text{2}}}\)
3 Octahedral, \({\text{s}}{{\text{p}}^{\text{3}}}{{\text{d}}^{\text{2}}}\)
4 Tetrahedral,\({\text{s}}{{\text{p}}^{\text{3}}}\)
CHXI11:THE P-BLOCK ELEMENTS

316943 The gas evolved on heating \(\mathrm{CaF}_{2}\) and \(\mathrm{SiO}_{2}\) with concentrated \(\mathrm{H}_{2} \mathrm{SO}_{4}\), on hydrolysis gives a white gelatinous precipitate. The precipitate is

1 Hydrofluorosilicic acid
2 Silica acid
3 Silicic acid
4 Calciumfluorosilicate
JEE - 2014
Join With Us for More Updates
CHXI11:THE P-BLOCK ELEMENTS

316940 Which of the following is used in surgical and cosmetic plants?

1 Silicones
2 Silicates
3 Silica
4 None of these
CHXI11:THE P-BLOCK ELEMENTS

316941 Which is formed when \(\mathrm{SiCl}_{4}\) vapours are passed over hot \(\mathrm{Mg}\) ?

1 \(\mathrm{SiCl}_{2}+\mathrm{MgCl}_{2}\)
2 \(\mathrm{Si}+\mathrm{MgCl}_{2}\)
3 \(\mathrm{Mg}_{2} \mathrm{Si}+\mathrm{Cl}_{2}\)
4 \(\mathrm{MgSiCl}_{6}\)
CHXI11:THE P-BLOCK ELEMENTS

316942 The structure and hybridisation of \(\mathrm{Si}\left(\mathrm{CH}_{3}\right)_{4}\) is

1 Bent, sp
2 Trigonal, \({\text{s}}{{\text{p}}^{\text{2}}}\)
3 Octahedral, \({\text{s}}{{\text{p}}^{\text{3}}}{{\text{d}}^{\text{2}}}\)
4 Tetrahedral,\({\text{s}}{{\text{p}}^{\text{3}}}\)
CHXI11:THE P-BLOCK ELEMENTS

316943 The gas evolved on heating \(\mathrm{CaF}_{2}\) and \(\mathrm{SiO}_{2}\) with concentrated \(\mathrm{H}_{2} \mathrm{SO}_{4}\), on hydrolysis gives a white gelatinous precipitate. The precipitate is

1 Hydrofluorosilicic acid
2 Silica acid
3 Silicic acid
4 Calciumfluorosilicate
JEE - 2014
For More Updates join with Us