NEET Chemistry Chemistry in Everyday Life Questions Solved


The poisonous gas evolved in Bhopal tragedy from the pesticide plant of Union Carbide Co. was:

(a) CO                    (b) methyl isocyanate

(c) phosgene          (d) chloropicrin

(b)

It was MIC or methyl isocyanate.

 

Synonyms include isocyanomethane, isocyanatomethane, methylcarbylamine, and MIC.

  • Persons exposed only to methyl isocyanate gas pose no risk of secondary contamination. Persons whose skin or clothing is contaminated with liquid methyl isocyanate can secondarily contaminate rescuers by direct contact or through offgassing of vapor.
  • At temperatures below 39ºC (102ºF), methyl isocyanate is a very flammable colorless liquid that readily evaporates when exposed to air. Gaseous methyl isocyanate is slightly heavier than air.
  • Although methyl isocyanate has a pungent odor, adverse health effects have been reported at or below the human odor threshold; therefore, odor detection is not a reliable indicator of exposure.
  • Methyl isocyanate is readily absorbed through the upper respiratory tract. Methyl isocyanate can also be absorbed through the digestive tract or skin.

Image result for methyl isocyanate formula

 

 

Difficulty Level:

  • 6%
  • 79%
  • 14%
  • 2%
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