Question:
Which of the following aldehyde has buttery odour?
Which of the following aldehyde has buttery odour?
Show Hint
Associate the root word "Butyr-" directly with its natural source, butter (from the Latin butyrum). Both butyric acid and butyraldehyde share this structural prefix due to their isolation or olfactory connection to dairy fats!
Updated On: Jun 11, 2026
- Crotonaldehyde
- Benzaldehyde
- Butyraldehyde
- Cinnamaldehyde
Show Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Understanding the Question:
The question requires us to identify the specific aldehyde from the given options that is structurally associated with a distinct buttery odor.
Step 2: Key Formula or Approach:
Volatile low-molecular-weight aldehydes and ketones have distinct olfactory profiles that change drastically based on chain length and structural saturation. Many are utilized in flavor chemistry and industrial fragrances to replicate natural aromas.
Step 3: Detailed Explanation:
Let's analyze the distinct characteristic aromas belonging to each of the given aldehydes:
• Crotonaldehyde: An unsaturated aliphatic aldehyde ($\mathrm{CH_3-CH=CH-CHO}$) that possesses an extremely suffocating, sharp, and highly pungent odor.
• Benzaldehyde: The simplest aromatic aldehyde ($\mathrm{C_6H_5CHO}$) that exhibits a very recognizable, sweet, almond-like or cherry-like fragrance.
• Butyraldehyde: Also known formally as butanal ($\mathrm{CH_3CH_2CH_2CHO}$), it is a volatile four-carbon aliphatic aldehyde. In dilute quantities, it releases a characteristic rich, savory, and distinctly buttery odor, making it useful in formulating artificial butter and food flavorings.
• Cinnamaldehyde: A complex conjugated aromatic aldehyde ($\mathrm{C_6H_5-CH=CH-CHO}$) that gives cinnamon its signature warm, sweet, and highly spicy aroma.
Step 4: Final Answer:
The aldehyde that features a buttery odor is Butyraldehyde, which corresponds to option (C).
The question requires us to identify the specific aldehyde from the given options that is structurally associated with a distinct buttery odor.
Step 2: Key Formula or Approach:
Volatile low-molecular-weight aldehydes and ketones have distinct olfactory profiles that change drastically based on chain length and structural saturation. Many are utilized in flavor chemistry and industrial fragrances to replicate natural aromas.
Step 3: Detailed Explanation:
Let's analyze the distinct characteristic aromas belonging to each of the given aldehydes:
• Crotonaldehyde: An unsaturated aliphatic aldehyde ($\mathrm{CH_3-CH=CH-CHO}$) that possesses an extremely suffocating, sharp, and highly pungent odor.
• Benzaldehyde: The simplest aromatic aldehyde ($\mathrm{C_6H_5CHO}$) that exhibits a very recognizable, sweet, almond-like or cherry-like fragrance.
• Butyraldehyde: Also known formally as butanal ($\mathrm{CH_3CH_2CH_2CHO}$), it is a volatile four-carbon aliphatic aldehyde. In dilute quantities, it releases a characteristic rich, savory, and distinctly buttery odor, making it useful in formulating artificial butter and food flavorings.
• Cinnamaldehyde: A complex conjugated aromatic aldehyde ($\mathrm{C_6H_5-CH=CH-CHO}$) that gives cinnamon its signature warm, sweet, and highly spicy aroma.
Step 4: Final Answer:
The aldehyde that features a buttery odor is Butyraldehyde, which corresponds to option (C).
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