In the following passage some words have been deleted. Fill in the blanks with the help of the alternatives given. Select the most appropriate option for each blank.

Comprehension:
The Bhopal gas tragedy has been described as the world's (1)______ industrial disaster. Forty two tonnes of methyl isocyanate (2)______ from the steel containers (3)______ the Union Carbide factory and released a cloud of (4)______ gas.It left a legacy of instant and (5)______ death.