Q. If a large number of people are enclosed in a room, then
A) Oxygen decreases and carbon dioxide increases
B) Oxygen increases and carbon dioxide decreases
C) Both oxygen and carbon dioxide decreases
D) Both oxygen and carbon dioxide increases
Explanation
Respiration is an intracellular catabolic process of oxidation reduction, in which the complex organic food materials are broken down to form C$O_{2}$, $H_{2}O\$and energy. If a large number of people are enclosed in a room the$\ O_{2}$ of room is utilized in respiration and C$O_{2}$ released.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.