The Bhopal tragedy was caused by the gas A. Phosgene B. Carbon monoxide C. Methyl isocyanate D. Chlorine

The correct answer is C. Methyl isocyanate.

Methyl isocyanate (MIC) is a highly toxic gas that was used as an intermediate in the production of the insecticide Sevin at the Union Carbide India Limited (UCIL) plant in Bhopal, India. On December 2, 1984, a leak of MIC from the plant killed an estimated 22,000 people and injured over 150,000 others. It is considered to be the world’s worst industrial disaster.

Phosgene (COCl2) is a colorless, poisonous gas that is used in the

production of pesticides, herbicides, and plastics. It is also used as a chemical weapon. Carbon monoxide (CO) is a colorless, odorless gas that is produced when carbon-containing materials are burned incompletely. It is a major cause of accidental death and is also a component of cigarette smoke. Chlorine (Cl2) is a greenish-yellow gas that is used in the production of bleach, PVC, and other chemicals. It is also used as a disinfectant and a bleaching agent.

All of these gases are toxic, but MIC is

the most toxic of the four. It is a highly reactive gas that can cause severe damage to the lungs, eyes, and skin. It can also cause death.