Question

Why are freezers placed on the top of refrigerators?

Answer 1

Freezers are placed on the top of refrigerators because they work on the principle of convection. Since cold air is heavier than hot air, it travels downwards and warm air, being light, travels upwards. Due to this, the cold air that is generated in the freezer travels to the bottom of the refrigerator and creates a cooling effect. And, the warm air in the refrigerator travels upwards and gets cooled in the freezer once again.