1.

Which of the following reaction takes place at cathode in electro chemical manufacture of adiponitrile from acrylonitrile?

A. H<sub>2</sub>O 2H<sup>+</sup>+ ( frac{1}{2} ) O<sub>2</sub>+ 2e<sup> </sup>
B. 2CH<sub>2</sub>=CHCN+2H<sub>2</sub> O+2e<sup> </sup> NC (CH<sub>2</sub>)<sub>4</sub> CN
C. 2CH<sub>2</sub>=CHCN+2H<sub>2</sub> O+2e<sup> </sup> NC (CH<sub>2</sub>)<sub>4</sub> CN+2OH<sup> </sup>
D. 2CH<sub>2</sub>=CHCN+2H<sub>2</sub> O NC (CH<sub>2</sub>)<sub>4</sub> CN+ ( frac{1}{2} ) O<sub>2</sub>
Answer» D. 2CH<sub>2</sub>=CHCN+2H<sub>2</sub> O NC (CH<sub>2</sub>)<sub>4</sub> CN+ ( frac{1}{2} ) O<sub>2</sub>


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