Question 9 : Glass is produced from mixture of silicates mainly of
K and Ca
Na and Al
K and Al
Na and Ca
Question 10 : Which of these will give a positive brown ring test?
nitric oxide
nitric dioxide
nitrogen oxide
dinitrogen tetraoxide
Question 11 : Which of these compounds is used in toothpastes as a source of fluoride ion to harden dental enamel
stannous fluoride
germanium fluoride
carbon tetra fluoride
Silicate fluoride
Question 12 : Silicones are a group of-------------
Organosilicon polymers
tetrachloro silicate polymer
silicon dioxide
organosilicates
1
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2017-03-03T18:01:06-0500
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