Fly Ash

Recently, researchers at the Indian Institute of Technology (IIT) Hyderabad have developed a waterproofing material using fly ash. Consider the following statements regarding the fly ash.

  1. Fly ash is a fine powder that is a byproduct of burning pulverized coal in electric generation power plants.
  2. Most fly ash is pozzolanic, which means it’s a siliceous and ferrous material reacts with calcium hydroxide to form cement.
  3. There are two common types of fly ash: Class F and Class E.

Which of the following statements given above is/are correct? Choose the correctanswer from the codes given below:

1 and 2
2 and 3
Only 1
Only 2