GENERAL KNOWLEDGE

Detailed explanation-1: -The Correct answer is option 1 i.e. Methyl isocyanate. On 3 December 1984, Methyl isocyanate (Chemical formula-CH3NCO or C2H3NO) gas leaked from the the pesticide plant of Union Carbide (now Dow Chemicals) situated in Bhopal, Madhya Pradesh.

Detailed explanation-2: -During the late hours of that fateful night, water is believed to have entered a side pipe and into the tank when workers were trying to unclog it. This caused an exothermic reaction in the tank and increased the tank’s pressure slowly which led to the atmospheric venting of the gas.

Detailed explanation-3: -Post-midnight on December 3, 1984, Methyl Isocyanate (MIC) (Chemical formula-CH3NCO or C2H3NO) leaked from the pesticide plant of Union Carbide (now Dow Chemicals), an MNC, in Madhya Pradesh capital Bhopal. It is estimated that about 40 tonnes of gas and other chemicals leaked from the Union Carbide factory.

Detailed explanation-4: -The Bhopal Gas tragedy happened in Bhopal on December 3, 1984. This incident happened due to the leakage of methyl isocyanate (MIC) gas from three storage tanks of Union Carbide factory. MIC gas was used for manufacturing of pesticides.