In which of the following product will be aldehyde

1.	In which of the following product will be aldehyde
Answer» <P>`(CH_(3))_(2)C=C(CH_(3))_(2)overset(03)underset(Zn//H_(2))rightarrow` `CH_(3)CH=CH_(2)overset(CO //H_(2))underset(Delta,[CO(CO)_(8)])rightarrow` `CH_(3)CH=CH_(2)overset(Pdcl_(2),H_(2)O)underset(CuCl_(2))rightarrow` `CH_(3)- C -= CH overset(HgSO_(4))underset(H_(2)SO_(4)//H_(2)O)rightarrow` Solution :Oxo PROCESS or hydroformylation of alkene. Alkene with water gas at high T & P in the presence of cobalt carbonyl forms ALDEHYDE.

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