General Knowledge - General Science - Discussion

Discussion Forum : General Science - Elements and Metals (Q.No. 23)

General Science

23.

Among the various allotropes of carbon,

coke is the hardest, graphite is the softest

diamond is the hardest, coke is the softest

diamond is the hardest, graphite is the softest

diamond is the hardest, lamp black is the softest

Answer: Option

Explanation:

No answer description is available. Let's discuss.

Discussion:

32 comments Page 4 of 4.

Cheenu said: 7 years ago

Lamp black is the softest.

Beny said: 6 years ago

Which means coke?

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