Question

Mark the wrong statement. 

(A) People sleeping in closed room with coal fire burning inside, can die due to CO₂ poisoning. 

(B) Flame is only produced when gaseous substances burn. 

(C) Fullerenes are allotropes of carbon. 

(D) lntake of methyl alcohol can cause death

Answer 1

Correct option  (A) People sleeping in closed room with coal fire burning inside, can die due to CO₂ poisoning. 

Explanation: 

lncomplete burning of coal in a closed room produces carbon monoxide. Carbon monoxide combines with haemoglobin more efficiently than oxygen, causing deficiency of oxygen in tissues and cells which can lead to death.