Multiple choice general knowledge science & technology

CH3CHO - Careful its IUPAC name

  1. Acetone

  2. Acetaldehyde

  3. Methanal

  4. Ethanal
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D Correct answer
Explanation

CH3CHO is acetaldehyde, whose IUPAC name is ethanal. The 'eth-' prefix indicates two carbons, and '-al' suffix denotes an aldehyde functional group. Acetone is (CH3)2CO, methanal is HCHO (formaldehyde), so ethanal is the correct systematic name for CH3CHO.

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