Question 11 : Which of these is not a carbide?
dative
covalent
interstitial
ionic
Question 12 : Silicates are salts of----
silicon tetraoxide
Silica gel
tetrachloro silicon
Crystaamite
Question 13 : Which of these is not a raw material for the cement manufacture?
lime
silica
Silicate
alumina
Question 14 : When carbon is linked to elements of lower or approximately the same electronegativity,the binary compounds formed are termed
hydroxides
halides
carbides
oxides
Question 15 : Which of the group V elements give only one oxidation state?
bismouth
phosphorus
nitrogen
lead
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