An allotropic form of carbon used for cutting and drilling is
A) charcoal
B) bone charcoal
C) graphite
D) diamond
Correct Answer:
Verified
Q13: Which order of relative size amongst the
Q14: Which one of the following has the
Q15: Which of the following is an example
Q16: When steam is passed over hot coke,
Q17: Producer gas is a mixture of
A)carbon monoxide
Q18: Water gas consists of
A)water vapour and coal
Q19: The gas used in the welding and
Q20: Coal with largest C content is
A)anthracite
B)peat
C)lignite
D)bituminous
Q22: Cinnabar is an ore of
A)Pb
B)Zn
C)Hg
D)Cu
Q23: Which of them is not an ore
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