Question

Statement 1: Coal and coke are examples of crystalline forms of carbon.

Statement 2: Graphite and diamonds are examples of non-crystalline forms of carbon.

• A. Statement 1 is true and statement 2 is false.
• B. Statement 1 is false and statement 2 is true.
• C. Both statements 1 and 2 are true.
• D. Both statements 1 and 2 are false.

Answer 1

The correct option is D Both statements 1 and 2 are false.

The allotropes of carbon exists in two forms:

$\bullet$ Crystalline form: Carbon atoms are arranged in definite geometrical shape. Examples: Diamond, graphite and fullerene.

$\bullet$ Amorphous form: Carbon atoms are not arranged in definite geometrical shape. Examples: Coal, coke, charcoal, etc.