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In which process low cost acrylonitrile is produced?

In which process low cost acrylonitrile is produced? Correct Answer Electro organic chemical process

Electro organic chemical process uses low-cost acrylonitrile made in one step from propylene, ammonia and air to give adiponitrile in a second step. Alternatively, one must go in four steps from benzene to cyclohexane to adipic acid to adiponitrile.

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The present cost of the plant = $${\text{original cost}} \times \frac{{{\text{index value at present}}}}{{{\text{index value at time original cost was obtained}}}}.$$
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