Consider the following statements :
1. For the combustion of pulverized coal, 5 to 10% excess air is required.
2. Air contains 21% oxygen by weight.
3. The flue gases from a coal-fired furnace contain around 70% nitrogen by volume
4. In the combustion of liquid fuels, the number of moles of the reactants.
Of these statements
Option (A)
1, 2 and 4 are correct
Option (B)
1, 3 and 4 are correct
2, 3 and 4 are correct
1 and 3 are correct
Correct Option:
Question Solution:
Air contain 23.2% of mass and 21% of volume of oxygen. PULVERIZED coal are powdered coal so less excess air required.