Non symmetrical internal alkyne on Kucherov reaction gives.
Acetaldehyde
Methyl ketone
Single ketone
Mixture of ketones
Note: (i) Acetylene (CH≡CH ) gives acetaldehyde (ii) Terminal alkyne (R−C≡CH) gives RCOCH3 (Methyl ketone) (iii) Symmetrical internal alkyne (R−C≡C−R) gives a single ketone RCOCH2R