GENERAL KNOWLEDGE

Detailed explanation-1: -Option A: CO or carbon monoxide is considered to be the most toxic gas as it shows high affinity to haemoglobin. Carbon monoxide combines with haemoglobin to form carboxyhemoglobin that causes trouble in breathing and can lead to death by suffocation.

Detailed explanation-2: -Nitrogen-It is the most prevalent gas in the atmosphere. Nitrogen comprises more than 75% of the air we breathe. Therefore, N2 is the most lethal of all destructive, dangerous, and toxic gases.

Detailed explanation-3: -Carbon monoxide is a far more dangerous gas. Also referred to as the “Silent Killer, ‘’ carbon monoxide is a colorless, odorless, tasteless, and non-irritating gas, so the early signs of poisoning are difficult to detect.

Detailed explanation-4: -Carbon monoxide is highly-poisonous because of its ability to form a complex with haemoglobin. The CO–Hb complex is more stable than the O2–Hb complex. The former prevents Hb from binding with oxygen. Thus, a person dies because of suffocation on not receiving oxygen.

Detailed explanation-5: -Carbon monoxide is poisonous and carbon dioxide is non toxic in nature. Carbon monoxide is poisonous because it has the capacity to form a complex with blood as in haemoglobin. And the complex of carbon monoxide with haemoglobin is more stable than the complex of oxygen with haemoglobin.