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InOrganic Chemistry -- Carbon
16.
Which of the following metal carbides may be called a methanide?
- A.CaC2
- B.Mg2C3
- C.Al4C3
- D.BaC2
- Answer
- Report
Answer : [C]
17.
Calcium carbide is manufactured by heating
- A.calcium with carbon
- B.lime with coke
- C.calcium with carbon monoxide
- D.calcium chloride with coke
- Answer
- Report
Answer : [B]
18.
In carbon-60 all carbon atoms are
- A.sp2-hybridized with a truncated icosahedron shape
- B.sp3-hybridized with a square antiprism shape
- C.sp2-hybridized with a diamond shape
- D.sp2-hybridized with a graphite-like shape
- Answer
- Report
Answer : [A]
19.
Carbon-60 contains
- A.20 pentagons and 12 hexagons
- B.12 pentagons and 20 hexagons
- C.30 pentagons and 30 hexagons
- D.24 pentagons and 36 hexagons
- Answer
- Report
Answer : [B]
20.
The crystal structure of calcium carbide resembles that of
- A.rutile (TiO2)
- B.fluorite (CaF2)
- C.silica (SiO2)
- D.rock salt (NaCl)
- Answer
- Report
Answer : [D]
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