Question

Why is it advised to keep the door or window open while burning coal in the room?​

Answer 1

Answer:

When coal is burned, carbon dioxide is produced. If the doors and windows are closed, the carbon dioxide will accumulate and the amount of oxygen will decrease. This will extinguish the fire. In order to keep the coal burning, we need to expel the CO2 and allow O2 into the room by opening the doors.

Apart from that, excessive CO2 in a closed room could result in headache, dizziness and even death of the individuals in the room. So the doors must be kept open for proper ventilation.

Answer 2

Explanation:

When coal is burned, carbon dioxide is produced. If the doors and windows are closed, the carbon dioxide will accumulate and the amount of oxygen will decrease. This will extinguish the fire. ... So the doors must be kept open for proper ventilation.

or Burning of Angethi produces many harmful gases such as Carbon dioxide and Carbon monoxide etc. This also reduces the flow of oxygen. It causes breathing problem and which may also kill a sleeping person. So, keeping the door open is suggested so the proper flow of air and oxygen can take place.