Question

I am black when you buy me, red when you use me and gray when you throw me away. What am I?
Fire
Charcoal
Sand
Cement

Answer 1

Answer:

charcoal is the only answer

Answer 2

Answer : Charcoal

Explanation:

• The given question is the riddle which is interesting one . The hints are given in the question itself .

• The thing is black when we buy and it turns into red when we used . It means - "Charcoal".

• Charcoal is a lightweight black substance that can be used as fuel.

• Charcoal is produced by heating of wood and other substances .

• While heating coal, it becomes red and after complete burning its ashes becomes grey which we throw away.