Question

Choose the statement that best describes given compounds.

• A. 1, 3, 4 represent same compounds
• B. 1 and 3 are isomer of 2 and 4
• C. 1, 4 are isomer represent the compound
• D. All the structure represent the same compound

Answer 1

Answer: (A)

1, 3, 4 represent same compounds

Considering the numbering of the chain as in the above figures, $1,3$ and $4$ give the same IUPAC name, whereas $2$ gives a different IUPAC name.

$1,3$ and $4$ denote. $3-ethyl-4-methyl$ $hexane$ whereas $2$ donates $2-ethyl-4-methyl$ $hexane$. Hence $1,3$ and $4$ represent same compound.