Multiple choice

In which of the following forms does carbon occur in free state?

  1. Carbonates

  2. Fossil fuels

  3. Carbon dioxide gas

  4. Graphite

  5. Organic compounds

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct option. Carbon occurs in free state in the form of graphite. Only a small amount of carbon occurs in free state in the earth's crust.