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Question

When diamond is heated to 1500C, in the absence of air, it forms :
  1. graphite
  2. carbon black
  3. soot
  4. coke

A
graphite
B
carbon black
C
soot
D
coke
Solution
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When diamond is heated to 1500C in the absence of air, diamond gets converted to graphite.
Cdiamond1500C−−−−−−−−−in absence of airCgraphite

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