question_answer

Which of the following chemicals are used to manufacture methyl isocyanate that caused ?Bhopal Tragedy? (i)            Methylamine     (ii)           Phosgene (iii)          Phosphine          (iv)         Dimethylamine [AIIMS 2005]

A)                 (i) and (iii)

B)                 (iii) and (iv)

C)                 (i) and (ii)            

D)                 (ii) and (iv)

Correct Answer: C

Solution :

           Methyl isocyanate is industrially prepared by the action of methyl amine with phosgene.                    CH3NH2 + COCl2 \[\xrightarrow{-HCl}\][CH3NH ? CO ? Cl]