Question

A thing which is black when we buy and red when we use it and grey when we throw it ​

Answer 1

Answer:

coal

Explanation:

• it is black when we buy
• when it is burned it is red in color
• the ashes which is grey in color is only the waste left after burning

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Answer 2

Answer:

HEY MATE,

HERE'S YOUR ANSWER.

=> That thing is Charcoal.

Explanation:

It is Charcoal which is black when we buy it or when not being used. It gets red in appearance when put in use means to say when burning. And eventually when it's been consumed by fire or after getting burned out or used up, changes into ashes which look grey in color.

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