Bhopal disaster (1984) is one of the most tragic industrial accident, which happened due to release of __________ gas into the atmosphere from Union Carbide factory.

The Bhopal disaster of 1984 was caused by the leak of methyl isocyanate gas from the Union Carbide factory.

Methyl isocyanate is a highly toxic gas used in pesticide manufacture that killed thousands overnight.

Triethyl chlorine is not the gas involved and had no role in the tragedy.

Dimethylsulphide is a sulphur compound linked to marine odours, not the Bhopal leak.

Hydrogen disulphide is likewise not the gas that caused the disaster.

The tragedy led India to strengthen its industrial and environmental safety laws.