Explanation:

Statement 1: When pulverized coal bituminous/lignite
is burnt in the boiler of a thermal power station, a part of ash falls downat the bottom of the boiler and is known as bottom ash.
• Fly ash contains trace concentrations of heavy metals and othersubstances that are known to be detrimental to health in sufficientquantities.
• Potentially toxic trace elements in coal include arsenic, beryllium,cadmium, barium, chromium, copper, lead, mercury,molybdenum, nickel, radium, selenium, thorium, uranium,vanadium, and zinc.
Statement 2: A fraction of the mass of coal burned consists ofunburnable mineral that becomes ash, so the concentration of most traceelements in coal ash can be very high as compared to the coal.
Fly ash contains crystalline silica which is known to cause lung disease,in particular silicosis.
Maharashtra became the first state in the country to adopt
the Fly Ash Utilization Policy.

• The policy seeks 100% use of fly ash generated from thermal powerplants and biogas plants for construction activities. Facilitates useof fly ash to make bricks, blocks, tiles, wall panels, cement andother construction materials.

• It will help in environment protection and save soil excavation. Italso will make available raw material for construction at low cost tohelp ‘Housing for All’ projects.