Question 13 : The two allotropies of carbon are------
Diamond and Charcoal
Charcoal and Coke
Diamond and Graphite
Coke and Diamond
Question 14 : Clays are esscentially alumina-silicates of -----
Na and K
Al or Si
Na or Ca
Ca and Si
Question 15 : Allotropy is the existence of elements in more than------
One hydride compound
One physical state
One form
One oxide compound
Question 16 : Artificial graphite can be produced on a large scale by heating
Carbon with silica
Carbon with silica
Coke with silica
Charcoal with silica
1
Expert's answer
2017-03-03T17:58:31-0500
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