03 the blotomnmr shectum sk ocompollhd btalete ot 2-lo. ond9-k bhmuna atio ol3 esbectieluhlhichcombalundbeis beathoaaich st thasbecthtum 2 hc o.chc 0.ch hc-0-c

Ans is C H3C-CO-CH2-CH2-CO-CH3 here one singlet come for both terminal CH3 so total proton for that signal is 6. And other singlet come from CH2 group so total 4 hydrogens. Ratio...