Final answer:
The functional groups for the given compounds are a ketone (CO), a carboxylic acid (-COOH), an aldehyde (-CHO), and an alcohol (-OH) group.
Step-by-step explanation:
The question is about identifying the functional groups present in a set of organic compounds. Here are the functional groups in the given compounds:
(i) CH₂-CO-CH₂-CH₂-CH₂-CH₃ - This compound has a ketone (CO) group.
(ii) CH₃-CH₂-CH₂-COOH - This compound contains a carboxylic acid (-COOH) group.
(iii) CH₃-CH₂-CH₂-CH₂-CHO - This compound features an aldehyde (-CHO) group.
(iv) CH₃-CH₂-OH - This molecule includes an alcohol (-OH) group.
Functional groups like ketones, carboxylic acids, aldehydes, and alcohols define the chemical characteristics and functions of organic molecules. Recognizing these groups helps in understanding molecular reactivity and properties.