What is the relationship between the following two structures?
$1. CH_3-CH_2-CO-CH_2-CH_3$
$2. CH_3-CH_2-CH_2-CH_2-CHO$

For which of the following parameters would the structural isomers $C_2H_5OH$ and $CH_3OCH_3$ be expected to have the same values? (Assume ideal behavior)

Which of the following substances is not an isomer of diethyl ether?

Which one of the following pairs of compounds are functional isomers?

How many positional isomers are possible for the compound $1,1-dideuterocyclohexane$ shown in the image?

Compounds with the same molecular formula but differing in their structures are called structural isomers. What type of structural isomerism is shown by $CH_3-S-CH_2-CH_2-CH_3$ and $CH_3-S-CH(CH_3)_2$?