Acetaldehyde can be obtained from from which of the following reaction ?

Options

A. `CH_3 CH_2OH overset(Cr //Delta )to`
B. `CH_3 - overset(O ) overset(|| )C - CI underset(H_2 .Delta ) overset( Pd -BuSO_4)to`
C. `(CH_3 COO)_2 Ca + (HCOO)_2 Ca overset(Delta )to`
D. `H_3 C-CH = underset(CH_3) underset(| ) C-Ph underset( Zn -H_2 O) overset(O_3) to`

Answer

A, B, C, D

Explanation

Acetaldehyde can be obtained from ` (a ) CH_3 cH_2 OH overset( cu //Delta) to CH_3 - overset(O ) overset(||) C-H`
(b) `CH_3 - overset( O ) overset(||)C - CI underset(H_2 ,Delta) overset (pd -BaSO_4) to ` resenmund reaction gives aldehydes `CH_3 - overset(O ) overset(||) C-H +HCI`

` (d ) CH_3 - overset(H ) overset( |) C = underset(CH_3) underset(|)C- Ph underset(Zn//H_2O) overset(O_3)to CH_3 - overset(O ) overset(|| ) C-H + underset("Reductive ozonolysis ") ( CH_3 - overset(O ) overset(||)C -Ph`