Among the various allotropes of carbon,



[ A ]    Diamond is the hardest, graphite is the softest
right
[ B ]    Diamond is the hardest, lamp black is the softest
[ C ]    Coke is the hardest, graphite is the softest
[ D ]    Diamond is the hardest, coke is the softest
Answer : Option A
Explanation :
General Knowledge Questions and Answers

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