NEET Questions Solved

What is formed when a primary alcohol undergoes catalytic dehydrogenation?

(a) Aldehyde        (b) Ketone        (c) Alkene             (d) Acid 

(a) Aldehydes can be prepared by the dehydrogenation of primary alcohols. It is carried out by passing the vapour of primary alcohol over reduced copper at 573K.

 Cu.573 KH2

   (1° alcohol)                 Aldehyde

1° alcohol gives aldehyde by catalytic dehydrogenation 

 Cu +573 KCH3CHO

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