Q. With reference to ‘Fly Ash’ consider the following statements:
1.Fly ash is a particulate material produced from the combustion of coal in thermal power plants.  
2.They are being used for the construction of highways.
3.Aluminum oxide is present in the fly ash.
Which of the statements given above are correct?

[A] 1 and 2 only

[B] 2 and 3 only

[C] 1 and 3 only

[D] 1, 2 and 3

Answer: D
Notes:

Explanation –

Statement 1, 2 and 3 are correct. Fly ash is a particulate material produced from the combustion of coal in thermal power plants. They are being used for the construction of highways. The main chemical components present in fly ash are: Silicon dioxide, Aluminum oxide, Ferric oxide.

Source: FORUMIAS