How will you convert acetaldehyde into methane?

Explanation

`underset("Acetadehyde")(CH_(3)CHO)overset(CrO_(3)("oxidation"))rarrunderset("Acetic acid")(CH_(3)COCH)overset(NaOH)rarrunderset("Sod.acetate")(CH_(3)COONa)underset(("Soda lime"))overset(NaOH//CaO)rarrunderset("Methane")(CH_(4))`