17. Air contains 20% by volume of oxygen. The volume of air required f

1.	17. Air contains 20% by volume of oxygen. The volume of air required for the complete combustionIL of methane under the same conditions is1) 2L2) 4L3) IOL4) 0.4L
Answer» But in 1L of air there is only 200ml of oxygen. In 10L of air(200*10)=2L of oxygen will be present. Therefore 10L of air is required. 1 l of air contains 200 ml of oxy gen's In 10 l of air (200×10) =2l of oxygen will be present So 10 lis required option (3) is the correct answer

17. Air contains 20% by volume of oxygen. The volume of air required for the complete combustionIL of methane under the same conditions is1) 2L2) 4L3) IOL4) 0.4L

Answer»

But in 1L of air there is only 200ml of oxygen.

In 10L of air(200*10)=2L of oxygen will be present.

Therefore 10L of air is required.

1 l of air contains 200 ml of oxy gen's In 10 l of air (200×10) =2l of oxygen will be present So 10 lis required

option (3) is the correct answer