Draw the structure for the following compounds:

(i) Propanone (ii) Butanone

33 Write the molecular formula of the third member of the homologues series of carbon compounds with general formula C_nH_2n+1OH. 33 Name any two fossil fuels. 34 Write the IUPAC names of the following:

(i) HCHO (ii) CH₃CHO (iii) CH₃CH₂CHO (iv) CH₃CH₂CH₂CHO

34 Which functional group is likely to be present in an organic compound having the molecular formula C₄H₁₀O? Write formula of the organic compound.