Question

The smell of hot sizzling food reaches several metres away, but to get the smell from cold food, we have to go close. Which of the following reason best explains the given observation?

• A. Higher the temperature, higher the kinetic energy of food particles
• B. Higher the temperature, lower the kinetic energy of the food particles
• C. The kinetic energy of food particles changes irrespective of temperature
• D. Lower the temperature, higher the kinetic energy of food particles

Answer 1

The correct option is A

Higher the temperature, higher the kinetic energy of food particles

As the temperature increases, the kinetic energy of food particles increases so the particles move faster. However, a cold food particle has less kinetic energy, so the speed of the particle in the latter case is much slower. Therefore, we cannot smell cold food throughout the room.