A. Reduction of silicon dioxide with calcium II carbide in an electric furnace
B. Oxidation of silicon hydroxide with carbon in an electric furnace
C. Reduction of silicon dioxide with magnesium II chloride in an electric furnace
D. Oxidation of Silicon hydroxide with magnesium II hydroxide
Answer: A
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A. In SiC , each carbon is tetrahedrally bonded to four other carbons, while in diamond each silicon is tetrahedrally bonded to four other carbons
B. In diamond , each carbon is tetrahedrally bonded to four other carbons, while in SiC silicon is tetrahedrally bonded to four other carbons
C. In diamond, each Si is hexahedrally bonded to four other carbons while carbon is hexahedrally bonded to four other carbon in SiC
D. In SiC, each Si is hexahedrally bonded to four other carbon while carbon is hexahedrally bonded to four other carbon in diamond
Answer: B
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A. Two dimensional linkages
B. Three dimensional linkages
C. Four dimensional linkages
D. Six dimensional linkages
Answer: B
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A. Strong ionic bonds formed within its molecule restricting mobility of electrons
B. Intramolecular bonding formed within the molecule
C. Intermolecular bonding formed between adjacent atoms of the molecule
D. Strong covalent bonds formed within its molecule restricting mobility of electrons
Answer: D
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Universities of the Coimbra Group offer short-term visits (generally 1 to maximum 3 months) to young African researchers from higher education institutions from Sub-Saharan Africa. The main aim of ...
