Why does the smell of hot sizzling food reach you several metres away, but the smell of cold food does not?
BiologyClass 9CBSEAnswered 12 May 2026
Answer
The smell of hot sizzling food reaches you several metres away because the particles of the aromatic substances in hot food have higher kinetic energy due to the increased temperature.
This higher kinetic energy causes them to move faster and diffuse more rapidly through the air. Cold food particles have lower kinetic energy, move slower, and thus diffuse much slower, making their smell less noticeable from a distance.
Suggested Q&A
Biology · Class 9- BiologyClass 9A boy runs along a circular track of radius 7 meters. If he completes one full round in 22 seconds, calculate his average speed and the magnitude of his average velocity for this round.
- BiologyClass 9What is the function of stomata in the epidermis of plant leaves?
- BiologyClass 9Describe the general characteristics of connective tissues that set them apart from other animal tissues.
- BiologyClass 9Distinguish between primary growth and secondary growth in plants, indicating which meristems are responsible for each.
- BiologyClass 9What is the role of intercalated discs in cardiac muscle tissue?
- BiologyClass 9Enlist the major types of cells found in blood and their specific functions.