In very cold climate, some people keep burning coal in an ‘Angithi’ inside the closed room to keep themselves warm. After sometime, people inside the room start feeling suffocated. What may be the cause of this?
1
Carbon present in coal burns to produce carbon dioxide which causes choking.
2
Since room is closed, fresh air does not enter the room and there is lack of oxygen.
3
Burning of coal uses all the oxygen present in air inside the room and there is lack of oxygen.
4
Carbon present in coal burns in insufficient supply of oxygen in closed room to produce carbon monoxide, which causes suffocation and choking.