Education Quizzes Science

Question:
Among the various allotropes of carbon,

Option A):
diamond is the hardest, lamp black is the softest
Option B):
coke is the hardest, graphite is the softest
Option C):
diamond is the hardest, coke is the softest
Option D):
diamond is the hardest, graphite is the softest

Correct Answer is Option D):
diamond is the hardest, graphite is the softest