Question 5 : The purest form of silicon dioxide is----
cristobalite
silibolite
rock crystal
silicates
Question 6 : The heavier elements of group IV functions as------
lewis acid
Lowry base
lewis base
Lowry acid
Question 7 : Which of these is not an interstitial carbide?
tungsten carbide
titanium carbide
Vanadium carbide
boron carbide
Question 8 : One of these is not a form of silica
cristobalite
tridymite
Flint
Freons
1
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2017-03-03T18:01:16-0500
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