Question

People usually keep Angethi/burning coal in their closed rooms
during winter season. Why is it advised to keep the door open?
NCERT Class VIII
Science - Exemplar Problems
Chapter 6. Combustion and Flame

Answer 1

n a closed room, the burning fire can consume oxygen and givee out carbon monoxide..carbon monoxide gas is produced due to incomplete burning of coal in sufficient airCarbon monoxide is known as the silent killer since it has no color,no odour and no taste.unfortunately Carbon monoxide has more affinity to combine with haemoglobin rather than oxygen....on combining with carbon monoxide, haemoglobin of the blood forms carboxy-haemoglobin which is then never restored to the vital haemoglobin., so the oxygen carrying capacity of blood gradually decreases...As a result of the formation of carboxy-haemoglobin, respiration gradually slows down and production of energy stops...if brain cells did nt receive oxyygen till 3 min they strt dying leading to setting in of paralysis and eventually death...

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Answer 2

it is strictly advised to keep the door open during keeping the burning coal in the closed room because due to the accumulation of CO2 in the room, the CO2 converts into Co that is Carbon monoxide which is very harmful and dangerous for our health, may toxicate our lungs and may cause in death... Therefore to be very careful while keeping a burning coal in room
....Hope it helps you..
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