Some P Block Elements

Chemistry
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Silica is heated with carbon in electric furnace to form :

A
silicon carbonate
B
silicon carbide or carborundum
C
silicon monoxide
D
none
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Quartz is the form ?

A
B
C
D
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The structure of ?

A
trigonal
B
linear
C
tetrahedral
D
angular
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Density is highest for :

A
Si
B
Ge
C
Sn
D
Pb
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Silicones are:

A
toxic
B
non-toxic
C
bitter
D
sour
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Silica dissolves in NaOH solution to form:

A
quartz
B
sodium silicate
C
carborundum
D
jaspar
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In silicones, silicon is strongly linked to:

A
oxygen
B
nitrogen
C
sulphur
D
carbon.
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Which is the crystalline form of silica?  

A
Agate
B
Jaspar
C
Onyx
D
Crystobalite
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Rock crystal is:

A
NaCl
B
Sand
C
Quartz
D
Agate
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