Question

Diamond is

• A. Soft
• B. Slippery in nature
• C. Hardest known substance
• D. None of these

Answer 1

The correct option is C

Hardest known substance

Explanation for correct option C :

• Diamond is the purest and hardest form of substance known on the earth.
• As per structure it forms a giant molecule where carbon atom is surrounded by four other carbon atom.

Explanation for incorrect option B:

• The network of carbon atom exits in three dimensional and provides a very rigid structure.
• Therefore it is not Slippery in nature.

Explanation for incorrect option A: Diamond is hardest substance because of three dimensional and provides a very rigid structure.So it is not soft.

Explanation for incorrect option D:

• Diamond is the purest and hardest form of substance known on the earth.
• As per structure it forms a giant molecule where carbon atom is surrounded by four other carbon atom.

There Diamond is the purest and hardest form of substance known on the earth.