Analyse the following pairs of compounds.
Write 1, if they are Chain isomers                
Write 2, if they are Metamers
Write 3, if they are Position isomers            
Write 4, if they are Homologues
Write 5, if they are Ring chain isomers 
Write 6, if they are Resonating structure
Write 7, if they are Functional isomers 
Write 8, if they are Identical  

Write answer of part (a), (b), (c) & (d) in the same order and present the four digit number as answer sheet. For example : If all these answer are 9 then fill 9999 sheet.